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ACAROLOGIA
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REVISION OF THE GENUS MYOTROMBICULA
WOMERSLEY AND HEASLIP, 1943
(TROMBICULIDAE : ACARINA) *
BY
P. H. VERCAMMEN-GRANDJEAN **.
The genus Myotrombicztla was created by Woi\ŒRSLEY and HEASLIP in 1943
for a unique specimen of which the remains of the chelostyles, both broken, consisted of the bifid basal articulation accidentally turned upside down and suggesting
to the imagination of any observer, a peculiar modification of the chelostyle for
the purpose of hair clasping (similar to that of fur mites like l\!Iyobiidae or Listrophoridae). Later, it vvas demonstrated that the chelostyles of the members of
this group were very like that of other trombiculids and that the case of Myotrombicula vespertilionis was a simple artifact. Nevertheless, the genus of
WoMERSLEY and HEASLIP proved to be perfectly valid on the basis of several
other characters (V.-G., 1963 a) . In a broad sense it is close to Leptotrombidùtm
s. str., but the leg setation is rather different and the scutum possesses anterolateral shoulders and, sometimes, a pronounced projection placing the anteromargin far before the AM and AL lines, a projection that never exists in Leptotrombidium. The palpai segments are also peculiar in their bony or contorted
outline.
Today the genus Myotrombicula unites four subgenera in a new combination,
as follows : r) Alexfainia, z) Vergrandia, 3) Perates, and 4) Myotrombicztla.
I want to express my gratitude to Dr. D. C. LEE, the Curator of the Acarology
Department of the South Australian Museum, ADELAIDE (S. Australia). Thanks
to his faithful and trusting generosity, I was able to restudy the precious generotype of .111. vespertilionis. I am also indebted to our esteemed colleague, Dr.
J. M. BRENNAN of the Rocky l\!Iountain Laboratory, HAMILTON (Montana, U.S.A.),
for allowing me to see sorne specimens in his extensive collection.
* This work was supported by Research Grant AI-03793 from the National Institute of
Allergy and Infectious Diseases, National Institutes of Health, U.S. Public Health Service.
** Research Parasitologist to the G. \V. Hooper Foundation, University of California lVIedical Center, HS\V.869, San Francisco, California 94122, U.S.A .
Acarologia, t. X, fasc. r, rg68.
5
-66-
Genus Myotrombicula Womersley & Heaslip, I943·
GT 1 Myotrombicula vespertilionis Womersley & Heaslip, I943·
B I 3
0
D : SIF = 7B or 7B.S- - - rrr. ooo
N 3 2
I
Trombiculini of small to large size, Ip = 450-r26o. Scutum often densely
punctate, trapezoïdal, with anterolateral shoulders; posteromargin prominent or
straight, or slightly concave. SB line anterior to posteromargin. Sensillae
branched on their distal half, or nude on that half with inconspicuous barbs on the
proximal half. Eye lenses : 2 pairs, or r small pair, or none (Alexfainia & Perates).
Chelostyle with tricuspid cap, one to several hooklike teeth on dorsal edge, or none.
Galeala often nude, branched in generotype and sorne members of Myotrombicula
s. str. Mastisetae rare.
L : Australia, Asia, Middle East, Africa and C. America.
H : Chiroptera (Mch).
N.B. : This genus is a member of the Leptotrombidùtm complex and an important link between the genus Leptotrombidium in the tribe Trombiculini on one
hand, and both the genera Riedlinia and Guntherana in the tribe Schoengastiini on
the other hand.
4 subgenera : A
B
C
D
A. -
-
Alexfainia,
Vergrandia,
Perates,
Myotrombicula.
Subgenus Alexfainia Yunker & Jones, rg6r.
SBT 1 Alexfainia chilonycteris Yunker & Jones, rg6r.
D : SIF = 7B.S-N-I-2III.OOOO.
Myotrombicula of medium to large size, Ip = goo-rroo. Scutum trapezoïdal
with small but dense punctation, telostigmal, two rvunded anterolateral shoulders
and rounded posterior projection, PW wider than AW. Sensillae almost nude
with inconspicuous basal barbs, as are AL and AM. AM anterior to the
AL line, and PL two or three times as long as AM; PL >>AM >AL. No eye
lenses visible. Palpus enormous and contrasting with the tiny chelostyles. In
chilonycteris the palpofemur is armed wüh a ventro-apical " ham~tlus " (for gripping ?). Single-pronged palpotibial claw, two times as strong as the curved chelostyle (tricuspid cap). Long and nude galeala. All palpai, sternal and coxal
setae are nude and slender; as are also the 2 gnathobasal setae (an exceptional
case). Galealae nude, Ga = N.
L : C. America.
H : Chiroptera (Mch).
-671) Myotrombicula ( Alexfainia) chilonycteris (Yunker & Jones, 1961), n. comb.
=
Alexfainia chilonycteris Yunker & Jones, rg6r, Brennan & Yunker, rg66.
H : Pteronotus parnellii & Carollia perspicillata.
Pt : Nasal passages.
L : Paraiso (C. Z.), 18jvm/196o, 4/I/1962, 2jmj1962; Madden Field (C . Z.),
7/vn/1961, 3/X/I96I; and Pacora (Panama), 31/X/ 1960.
TM : Holotype in Rocky Mountain Laboratory, Hamilton (Montana, U.S.A.).
D
SIF = 7B.S-N-I -2III.OOOO
fPp = (N)-(N)-(N) .N .N
fsp = 7-7-7
fCx = N.N .N
fSt = N .N
(ST, pST, PT', PT") =N
fBT = b/b/b
NDV = 8o
fV = 6.4 .8.4 116.6 -4-2 = 40
fD= zH + (6 .6) .6.8.4+4 = 40
AW
PW
SB
ASB
PSB
SD
AP
Ai\!
AL
PL
s
7I
!30
79
36
48
84
56
I9
I5
47
84
H
7I
D
8o
p
v
pp
Ip
44 50/ 70 307 294 329
930
pa
pm
Rem. : Fig. 1 to 9 show, better thau any description, the unusual r:haracters
proper toM. chilonycteris, which enable its recognition from the second and following
species, lVI. m~tnozi.
2) Myotrombicula ( Alexfainia)
m~tnozi
(Brennan & Yunker, rg66), n. comb.
= Alexjainia munozi Brennan & Yunker, rg66.
H : Pteronotus psilotis.
Pt : ?
L : Penonomé (Coclé, Panama), 8/n & 30/1/1962.
TM : Holotype n° 44413 in Rocky Mountain Laboratory, Hamilton (Montana,
U.S.A.).
D : SIF = 7B.S-N-I-2IIr.oooo
fPp = (N)-(N)-(N) .N.N
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = N.N.N
fSt = zN.zN
fBT = b/b/b
fD = zH
6.6.8 .6.6-4- 2. = 40
fV - .. . .. ? = 34
NDV = 74
+
AW
PW
SB
ASB
PSB
SD
AP
AM
42
84
52
34
40
74
42
8
AL
7
PL
5I
S
H
D
P
9·t
54
54
42 42/ 59 346
V
pa
pm
pp
Ip
328 346 !020
Rem. : Although the scutum and the gnathosome of munozi are smaller thau
those of chilonycteris, the Ip or Index pedibus shows that it is a larger species,
Ip = 1020 instead of 930 for the later. No "hamuli ".
B. -
Subgenus Vergrandia Yunker & Jones, 1961.
SGT j Vergrandia galei Yunker & Jones, 1961.
D : SIF = 7B.S-N-1-31II.OOOO.
Myotrombicula of medium size, Ip = 830. Trapezoïdal scutum, longer thau
wide with classical punctations and rounded anterolateral shoulders ; postero-
-68margin sinuous, almost straight. Sensillae almost nude, with few inconspicuous
and basal barbs, as are also AM and AL. AM anterior to AL and AM >PL >AL.
Sensilla bases surrounded by an oval crest. Galeala nu de, Ga = N.
Eye lenses, r small pair. Galeala nude and short. Single pronged palpotibial claw, as strong as the chelostyle, strong palps.
L : C. America.
H : Chiroptera (Mch) .
r) Myotrombicula (Vergrandia) galei (Yunker & Jones, rg6r), n. comb.
Vergrandia galei Yunker & Jones, rg6r, Brennan & Yunker, rg66.
H : Pteronotus parnellii ( = Chilonycteris rubiginosa).
Pt : Nasal passages.
L : Chilibrillo Caves, Chilibre (Panama), 2jvmjrg6o.
TM : Holotype in Rocky Mountain Laboratory, Hamilton (Montana, U.S.A.).
D : SIF = 7B.S-N-r-3IIr.oooo
fPp = (B)-(N)-(N) .N .N
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B .B .B
fSt = 2B.2B
fBT = bfb/b
fD = 2H + ro.ro.8.6-4-2 = 42
fV = 8+8·4u4+2 = 34
NDV = 76
AW
34
PW
52
SB
"
ASB
33
PSB
22
SD
55
AP
39
AM
50
AL
24
PL
40
S
8o
H
D
P
V
pa pm pp Ip
59 47/65 33 41/49 z86 247 294 827
Rem. : Palps almost as strong as those of M. (A.) munozi; palpotarsal setae
all nude except for a bifid dorsal one. The humeral and the 4 centra-dorsal setae
of first and second rows are provided with long, fine barbs on the basal half, as are
the ventrals ; the latero- and postera-dorsal setae are longer and provided with
short barbs on their entire length (fig. 7) .
C. -
Subgenus Perates Brennan & Dalmat, rg6o.
SGT f Perates insessus Brennan & Dalmat, rg6o.
2
0
D: SIF = 7B-N- - 3 rn. ooo.
3 2
I
Myotrombic~tla of small to medium size, Ip = 540-920. Scutum square to
rectangular (wide strip), with more or less pointed shoulders. Sensillae nude,
furcate, or branched (distal half). Eyes, r very small pair or none. Ga = N.
In insess~ts the posterior process of the tricuspid cap is serrate ; no subterminala
(ST) or parasubterminala (pST) on leg-tarsus r ; leg-segmentation can be interpreted as fsp = 6.6.6 (?); palpai formula, fPp = NfNfNNN.
L : C. America.
H : Chiroptera (Mch).
-
6g-
r) Myotrombicula (Perates) insessus (Brennan & Dalmat, rg6o), n . comb.
= Perates insessus
Brennan & Dalmat, rg6o, Brennan & Yunker, rg66.
H: Chilonycteris rubiginosa rubigt:nosa (Guatemala), Pteronotus psilotis (Panama).
Pt : ?
L : Finca San Luis, Escuintla (Guatemala) 6jvnrjrg5r ; Penonomé (Coclé,
Panama) 3ojr & 8Jnjrg6z.
TM : Holotype n° 34058 in Rocky Mountain Laboratory, Hamilton (Montana,
U.S.A.).
D : SIF = 7B-N-z-Jrrr.oooo
fPp = (N)-(N)-(N).N.N
fsp = 6.6.6 (?)
(ST, pST) = B
(PT', PT") = N
fCx = r.r.r
fSt = 2.2
fBT
fD =
AvV
30
PW
35
... .. .. -
28
SB
17
PSB
rs
ASB
19
fV SD
34
....... =
AP
29
AM
23
24
AL
27
NDV =
PL
40
52
S
H
so
- sol- 28 - /- -
D
P
V
pa
pm
pp
Ip
Rem. : This species has not been revised by the present author.
z) Myotrombicula (Perates) anophthalma (Hoffmann, rg6o), n. comb.
Trombic~tla (Trombicula) anophthalma Hoffmann, rg6o, Brennan & Yunker, rg66
(n. syn.).
Euschoengastia anops Brennan & Jones, rg6o.
H : Desmodus rotundus m~trinus and Pteronatus parnelli.
PT: ?
L : La Estrella Cave, Tonatico (Mexico), I I & I4/II/I955 ; Santa Lucia, Sinaloa
(Mexico), z8jvnjrg63 ; Tamana Hill Cave (Trinidad) rzjvrjrg56; Chilibrillo
Caves, Chilibre (Panama), zjvnrjrg6o.
TM: Holotype in Escuela Nacional de Ciencias Biol6gicas, I.P.N., México, D. F.
D
SIF = 7B-N-3-2IIr.rooo
(ST, pST, PT', PT") = N
fD = zH + 6.6.4.2 = zo
Mean
Ex.l+
AW
87
82
gr
PW SB ASB PSB
ro4 42 24 16
roo 40 2r r4
roS 46 26 17
fPp = (B)-(B)-(N).N.B
fsp = 7·7·7
fCx = B.N' .B
fSt = zB.zB
fBT = 3b/3b/3b.
fV = 4.2.2u2.2 = rz
NDV = 32.
SD AP AM AL PL S
40 25 42 28 6o 78
37 23 40 25 58 76
42 28 43 32 65 Bo
H
D
P
56 50/46 40
50 46/42 38
6o 52/47 45
V
pa pm pp
Ip
32j5o 34r 290 3r7 948
30/46 324 276 300 904
35 /54 354 300 340 994
Rem. : Wide scutum, striplike. PL much thicker and longer than AM and AL,
PL >AM >AL. Palpofemur with lateral angle of go 0 , genu with a sharper lateral
angle (fig. r) 1 . One mastitarsala on leg 3·
r . Palps with sharp angles on their si des appear to be peculiar to bat parasitism ; this is
observed in ether groups of bat chiggers : Tecomatlana, Riedlinia, etc.
-70-
3) Myotrombicttla (Perates) discors (Brennan & Jones, 1960), n. comb.
Trombicula discors Brennan & Jones, rg6o.
Myotrombicula discors, V.-G., 1964.
H : M ormoops megalophylla.
PT: ?
L : Tamana Cave, Mt. Tamana, Trinidad (B.W.I.), 20/XI/1957·
TM : Holotype n° 34680 in Rocky Mountain Laboratory, Hamilton (Montana,
U.S.A.).
D
SIF = 7B-B-3-3III.OOOO
(ST, pST, PT', PT") = N
fD = zH +
= 92
0
•
••
fPp = (N)-(N)-(N) .N.B
fsp = 7·7·7
fCx = B .B.B
fSt = zB.zB
fBT = bfb/b
fV= ....... = IOO
NDV = 192
•
AW
PW
SB
ASB
PSB
SD
AP
AM
AL
PL
s
56
75
29
25
15
40
zB
44
38
32
64
H
30
D
27
p
v
pa
pm
Ip
pp
23 18/24 258 244 252
754
Rem. : The scutal margins are obviously submerged by epiostracal pleats 1 .
After having seen 3 other specimens in the R.M.L., I must admit that the anteromargin is slightly less prominent, and without the rounded shoulders shown in
my drawing of 1964. Nevertheless all the setae are on scutum and not "off scutum ", as stated in the original publication, and the striplike scutum is similar
to that of anophthalma in Perates and bidentipalpis in Myotrombicula s. str. As
for the microtarsala or famulus 2, its knobbed apex matches perfectly with the
similar S 2 in M. olosa.
Perhaps discors pertains more to ll!Iyotrombicula than to Perates, as its branched
galeala also suggests. However, til more links are found, is it probably wiser to
keep it in the latter subgenus. Eye lenses, 2 normal pairs.
4) Myotrombicula (Perates) kerastaspis n. sp.
Trombicula monops Brennan & Jones, rg6o (in part.).
H : M ormoops megalophylla.
PT: ?
L : Tamana Cave, Mt. Tamana, Trinidad (B.W.I.) , 20/XI/1957·
TM : Holotype n° 34665/c in Rocky Mountain Laboratory, Hamilton (Montana,
U.S.A.).
D : SIF = 7B-N-3-2rrr.oooo
(ST, pST, PT', PT") = N
fD = zH + 6.8.8 .8.8 .6-4-2
fPp
fCx
= 52
=
=
(B)-(N)-(N) .N.N
fsp = 7·7·7
B .B.B
fSt = zN" .zB
fBT = bfb/b
fV = 8.6.6.6u6·4·4 ·2 = 42
NDV = 94
AW
P'vV
SB
ASB
PSB
SD
AP
Ai\I
AL
PL
S
27
47
27
25
16
41
30
22
21
24
70
H
D
P
V
pa pm pp
35 28/31 27 22/33 186 r72 rg2
r. lVI. anophthalma, M. l1erastaspis and M. monops present th,e same
epiostracal submersion but in a more moderate manner.
phenQ~enon
lp
550
of
-JI-
Rem. : Among the three specimens of T. monops sent to me (lVIarch rg65) by
our colleague J. lVI. BRENNAN, one pertaining to the type series of monops was
recognized as different. In fact it constitutes a valid species which was overlooked by the workers of the R.lVI.L. Figs. r to 8 speak for themselves by comparison with figs. 9 to rg representing T. monops. No eye lenses. Very pointed anterolateral shoulders, justifying the name, kerastaspis (= horned scutum). Leg
claws with spatulate or lanceolate apex.
5) Myotrombicula (Perates) macrozota (Brennan & Jones, rg6o), n. comb.
Trombiwla macrozota Brennan & Jones, rg6o.
H : Mormoops megalophylla and M. tumidiceps.
PT: ?
L : Tamana Hill Cave, Trinidad (B.W.I.), rzjvrjrg56; Tamana, Trinidad
(B.W.I.), I3jvrjrg55, rzjvrjrg56 and zojxrfi957·
TM : Holotype n° 33680 in Rocky Mountain Laboratory, Hamilton (Montana,
U.S.A.).
D
SIF = 7B-N-3-3III.OOOO
fPp = (B)-(B 2 )-(N) .N .B
fsp = 7·7 ·7
(ST, pST, PT', PT") = N
fCx = B.B.B
fSt = 2B.2B
fBT = bfb/b
fV = 6.8.2 114-4-2 = 26
NDV = 50
fD = 2H + 6.6.4.4 ·2 = 24
AW
63
PW
7I
SB
28
ASB
28
PSB
20
SD
48
AP
30
Al\l
32
AL
29
PL
78
S
64
H
D
P
V
pa pm pp Ip
64 55 /66 42 33/50 270 229 268 767
Rem. : The scutal aspect correlates this species with anophthalma as concerns : a) pointed shoulders, b) PL much longer and thicker than AM & PL, and
c) PL> >AM >AL. Dorsal setae of legs with few but robust barbs ; leg claws
with lanceolate apex. One nude mastifemorala (?) on leg r. No eye lenses.
6) Myotrombicula (Perates) monops (Brennan & Jones, rg6o), n. comb.
-
Trombicula monops Brennan & Jones, rg6o.
H : Mormoops megalophylla, Myotis nigricans and Pteronotus psilotis.
PT: ?
L : Tamana Cave, Mt. Tamana (Trinidad, B.W.I.), zojxrjrg57; Tamana,
I3/VI/I955· A cave, Cerro Punta (Chiriqui, Panama), 3/v frg6r ; Penonomé
(Codé, Panama), 8fnfrg6z.
TM : Holotype no 34665 in Rocky Mountain Laboratory, Hamilton (Montana,
U.S.A.).
D : SIF = 7B-N-3-3IIr.oooo
fPp = (B 2 )-(N)-(N).N.N
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B 3 .N".B 3
fSt = 2B 1 .2N"
fBT = b/b/b
fD = 2H + 6.6.8 .8.8 .8.6-4-2 = 58
fV = 8.6.10.811 2.8.6 .4.2 = 54
NDV = II2
AW
53
PW
6g
SB
;:6
ASB
;3~
PSB
19
SD
5r
AP
28
AM
48
AL
33
PL
35
S
76
H
D
P
V
pa pm PP
45 32 /40 30 23/36 235 222 233
Ip
6go
-72Rem. : Scutal anteromargin far in front of AL line, with rounded shoulders.
Sensillae nu de. Eye lens es, I small pair. AM> PL >AL. Palpotarsal setae with
only a few barbs, almost nude. Ga = N. Dorsal and ventral body setae with
few short barbs, barely seen. Dorsal leg setae with robust but few branches ;
leg claws with lanceolate apex ? All famuli and other leg microspurs budlike
(figs. 17, r8 & 19) . The two gnathobasal setae with only 2 branches (rare!).
D. -
Subgenus Myotrombicula Womersley & Heaslip, 1943.
SGT/ Myotrombicula vespertilionis Womersley & Heaslip, 1943.
B 3
D : SIF = 7B-N-3- 2 III.OOOO.
Myotrombicula of small to large size, Ip = 450-1260. Scutum wider than long,
trapezoïdal with anterorriargin prominent and rounded shoulders (AM often anterior to the AL line), and with straight posteromargin. Sensillae branched.
AM >PL >AL. Eyes, I or 2 pairs, from very small to large diameter. Galeala
branched, rarely nude (except in bidentipalpis). Chelostyle strong, with tricuspid
cap and sometimes teeth on dorsal edge. Famulus of leg 2 sometimes phalliform
(knoblike apex). No mastitarsala on leg 3·
L : Australia, Asia, Middle East, Africa.
H : Chiroptera (Mch), exceptionally rodents (Mr) .
r) Myotrombicula (Myotrombicula) vespertilionis Womersley & Heaslip, 1943.
Myotrombicula vespertilionis Womersley & Heaslip, 1943, Womersley, r952, Wharton
& Fuller, rgsz , Baker & Wharton, r952, Vercammen-Grandjean & Fain, rgsS, Vercammen-Grandjean, rg6z, rg63, rg64, Vercammen-Grandjean & Watkins, rg66.
H : " Bats " ?
PT: ?
L : South Australia (?).
TM : Holotype and single specimen in the South Australian Museum, Adelaide
(S. Australia) ; n° lVI 4443-59, 3576, sor, S.A.MUS.COL.
D
SIF = 7B-B-3-2 III. I 000
fPp = (B)-(N")-(N).N.B
fsp = 7·7 ·7
(ST, pST, PT', PT") =N
fCx = B .B .B
fSt = 2B.2B
fBT = bfb/b
fD = zH + 2.8.6.8.4.8.6.4.2 = so
fV = 2.4+6"6+2 = 28
NDV = 78
AW
PW
SB
ASB
PSB
SD
AP
AM
AL
PL
65
68
24
28
12
40
18
28
20
28
s
-
H
D p
33 24/27 -
v
16 j -
pa pm pp lp
218 188 210 6r6
Rem. : Huge anteroscutal prominence, poorly punctate, distance between
anteromargin and AL line equals AP. Scutal setae rather thin, short and sparsely
barbed ; AM = PL >AL. Sensillae missing. Eye lenses, I very small pair.
Galeala furcate, Ga = B 1 . Chelostyles broken. Palps with contorted outline.
Dorsal leg setae robust, with few branches or barbs ; 2 genualae on leg r ; mastitarsala 3 with few pasal barbs. Famulus 2 normally pointed! not phalliform,
-73z) Myotrombictûa (lVIyotrombicula) aselliae V.-G., 1963.
Myotrombicula olosa aselliae V.-G., 1963.
H : Asellia tridens murraiana (Anderson).
PT : ptero-patagium.
L : Kouh-Dozd Cave, Dilaram (Afghanistan), 21j1v /1958 .
TM : Holotype n° 22261/C/z in Museum of Lund (Sweden).
D SIF = 7B-B-3-2rrr.oooo
fPp = (B)-(B)-(B).B.B
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B.B.B
fSt = 2B.2B
fBT
fD = 2H + (8.8-4) (8.4) (8 .2)!-4-2 = 58
NDV = 14 6.
fV =
6.6.6.ro .8.ro.rou8 .ro .8.4 -
l
88
AW
PW
SB
ASB
PSB
SD
AP
Ai\[
AL
PL
S
H
66
Sr
25
35
22
57
28
5r
30
38
8o
5o 40/36 25 22/ 33 328 280 320
D
P
b/b/b
V
pa
pm
pp
lp
928
Rem. : Scutal shape, leg lengths and ornamentation differ in olosa and its
subspecies aselliae. These differences plainly justify the status of full species.
Phalliform famulus 2. Chelostyles with 3-4 dorsal teeth.
3) Myotrombicula
(Myotrombic~tla)
bidentipalpis V.-G. & Fain, rg58.
Myotrombicula bidentipalpis V.-G. & Fain, 1958, Audy, Lawrence & V.-G., rg6r,
V.-G., rg63.
H : Hipposideros sp.
PT : ears.
L : I.R.S.A.C. Station of Irangi (Kivu Prov., Belgian Congo), 14/vm/1956.
TM : Holotype in the Museum of Central Africa, Tervuren (Belgium).
D
SIF = 7B-N-3-3Irr.rooo
fPp = (B)-(B)-(N).N.B
fsp = 7-7·7
(ST, pST, PT', PT") = N
fCx = B.B.B
fSt = 2B.2B
fBT = bfb/b
fD = 2H + 6.6.6-4-4.2 = 30
fV = 4.6.6 .6u4.2 = 28
NDV = 58
AW
PW
SB
ASB
PSB
SD
AP
AM
AL
PL
82
IOO
37
24
20
44
26
40
29
47
S
H
D
P
V
pa
pm
pp
Ip
47 46/44 33 26/33 265 228 240 733
Rem. : With its striplike scutum, its biangular palpai contour and its nude
galeala, this species is an important link with anophthalma, discors and macrozota
in the Perates group. However, for the same reason that discors is retained among
the Perates, bidentipalpis will remain in the group Nfyotrombicula s. str. Famulus 2
pointed, not phalliform. Chelostyles with tricuspid cap, no teeth.
4) M yotrombic~tla ( M yotrombicula) filamentosa (Radford, 1954).
Trombicttla filamentosa Radford, I954·
Myotrombicula filamentosa, V.-G. & Watkins, 1966.
H : Rhinoloph~fs ctivosus acrotis Heuglin.
PT . ?
-74L : Ta'izz (Yemen), rgsr.
TM : Holotype no 6419 in U.S. National Museum, Washington D.C., U.S.A.
D : SIF = 7B-B-3-2IIr.oooo
fPp = (B)-(B)-(N).B.B
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B .B.B
fSt = 2B.2B
fBT
fD = 2 (2H) + (4.8) ~·4) (ro.2).8.8.6.6.4+2 = 78 / NDV = r
34
fV = 4.8.6.6 .6.8.8.6.4 - s6
1
AW
PW
SB
ASB
PSB
SD
AP
AM
AL
PL
s
75
88
28
39
20
59
31
59
40
52
gr
=
b/b/b
p
H
D
v pa pm pp Ip
62 41/38 25 25/36 364 306 348 ror8
Rem. : Differs from all the other members in several points reported in the
preceding data. Phalliform f2 • Chelostyles with 6 to 8 dorsal teeth.
5) Myotrombicula (Myotrombicula) lindbergei V.-G., rg63.
=
Myotrombicula lindbergei V.-G., 1963 b, 1963 a.
H : Rhinolophus ferrumequinum irani Cheesman.
PT : ear lobes.
L : Khan Zindan Caves, Beltchirach (Afghanistan), 29/X/1957·
TM : Holotype n° 2826r/B/2 in Museum of Lund (Sweden).
D : SIF = 7B-B-3-2IIr.r"ooo
fPp = (B)-(B)-(B).B.B
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B.B.B
fSt = 2B.2B
fBT = b/b/b
fD = 3 (2H) + (4.6.6) (8.4).ro.r2+6.6.2 = 74
NDV = r 6.
4
fV = 2.6.6.8 .8.6 .6.6u6 .6.6.4.2 = 72
l
AW
PW
SB
ASB
PSB
SD
AP
AM
AL
PL
6o
72
25
31
20
sr
25
44
30
36
S
70
pp
Ip
45 37/34 25 21/32 298 260 304
H
D
P
V
pa
pm
862
Rem. : Differs from olosa, megolosa, aselliae and filamentosa- which it resembles
very much - in having a normally pointed famulus on leg tarsus 2, (not phalliform as in the precited species) and chelostyles without dorsal teeth.
6) Myotrombicula (Myotrombicula) megolosa V.-G., 1963.
Myotrombicula megolosa V.-G., 1963 b, 1963 a, 1964, V.-G. & Watkins, 1966.
H : Rhinolophus clivosus boccharicus Kastschenco.
PT : ptero-patagium.
L : Zarmast Cave, Mainaneh (Afghanistan), r8/X/I957·
TM : Holotype n° r8ro57 fr in the Museum of Lund (Sweden).
D : SIF = 7B-B-3-2rrr.oooo
fPp = (B)-(N)-(B).N .B
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B .B.B
fSt = 2B.2B
fBT
fD = 3 (2H) + (4+4) (6.4) (8-4) .8.8.6.4.2 = 68
NDV = r .
44
fV = 8.8.8 .6.6.8.8u6.6.6.4.2 = 76
l
AW
PW
SB
ASB
PSB
SD
AP
84
roo
35
46
19
65
32
AM
74
H
D
P
V
=
bfb/b
AL
PL
S
43
6o
uS 64 54/6o 34 30/40 426 382 434 1242
pa
pm pp
Ip
Rem. : The largest species of this group. Phalliform famulus 2. Particularly
long genuala 3· Strong chelostyles with 6 hooklike teeth. Nude palpogenuala.
-757) Myotrombicula (Myotrombicula) olosa V.-G., 1963.
Myotrombicula olosa V.-G., rg63 b, rg63 a, rg64, V.-G. & Watkins, rg66.
H : 1) Rhinolophus ferrumeq~tinum irani Cheesman, 2) R. hipposideros midas
Andersen.
PT : uropatagium and pteropatagium.
L : r) Shelter of Fortress Qal'eh Bost, SW of Gerechk (Afghanistan), 6/XII/1957·
2) Boulan Cave, Qalat (Afghanistan), 9/rv /1958.
TM : Holotype n° 30261/B /1 in Museum of Lund (Sweden) .
D : SIF = 7B-B-3-2IIr.ooo:::>
fPp = (B)-(B)-(B).B.B
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B.B.B
fSt = zB.zB
fBT = bfb/b
fD : zH + (6.8) (6.8) (6 . 1~. 6.~. 6 . 4 = 68 1 NDV
rso.
fV -
AW
75
IO. IO.IO.I0 .8.8.8 .8.6.4 -
8_
\
PW
SB
ASB
PSB
SD
AP
AM
AL
PL
S
H
85
30
37
22
59
30
52
39
40
Sr
5I 40/36 27 23 /34
D
P
V
pa
pm
pp
lp
350 313 366 1029
Rem. : The only species of the group showing a solenidion S2 with a bulbous
apex (bulbapex). Ch~lostyles with 3-4 dorsal teeth. Phalliform f 2 •
8) Myotrombicula ( Myotrombicula) p!u:lipi (Womersley, 1952), n. comb.
Trombicula philipi Womersley, 1952, Radford, r954, Womersley & Audy, 1957.
H : H ipposideros cervimts .
PT: ?
L : Hollandia (Dutch New Guinea), 13/IX/1945·
TM : Holotype in the South Australian Museum, Adelaide (S. Australia).
D
SIF = 7B-B-3-2III.oooo
fPp = (B)-(B)-(N).N.B
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B .B .B
fSt = zB .zB
fBT = b/b/b
fD = zH + ro.8.ro.r2.6+2 = 54
fV = . . .... = 6o
NDV = rr4
AW
PW
SB
ASB
PSB
SD
AP
Al\'I
AL
PL . S
H
D
P
65
8o
23
25
15
40
24
36
28
32
-
22 /-
-
55
Rem. : This species has not been seen by the present reviser.
not phalliform. No dorsal teeth on chelostyle.
V
- /-
pa
pm
pp
Ip
270 225 270 765
Famulus 2 pointed,
9) Myotrombicula (Myotrombicula) vercamrneni Nadchatram & Lakshana, 1965.
Myotrombicula vercammeni Nadchatram & Lakshana, 1965.
H : Rattus niveiventer ? This host could only be an accidentai one ; according
to the authors themselves, the ordinary host is probably a bat.
PT: ?
L : Pa Dong Larn, Amphur Chumphae, Khon Khaer (Thailand), 22jxrj1g6z.
TM : Holotype n° 4614, SMRL n° 2007, in Institute for MediCal Research,
Kuala Lumpur (Malaysia).
D
SIF = 7B-B-3-2IIr.oooo
fPp = (B)-(B)-(N).B.B
fsp = 7·7·7
(ST, pST, PT', PT") = N
fCx = B.B.B
fSt = 2B.2B
fBT
fD = 2H + 14.I0.8 . ro.I2.I6.I4.10.8.4
NDV = 204.
fV = 8.IO.IO.I2 .I Oul4.IO.I0.8.4 = g6
l
D
P
=
b/b/b
AW
PW
SB
ASB
PSB
SD
AP
Al\[
AL
PL
S
H
60
7I
25
26
20
46
25
46
30
35
54
38 3!/- 22 I7/- 275 220 240 735
Rem.: This species has not been seen by the present reviser.
not phalliform. No dorsal teeth on chelostyle.
pa pm pp
V
Famulus
2
Ip
pointed,
ro) Myotrombicula (Myotrombicula) womersleyi n. sp.
H : Hipposideros harrisoni.
PT: ?
L : Bukit Lagong, Malaysia.
TM : Holotype in the George Williams Hooper Foundation, University of
Califomia Medical Center, San Francisco, Califomia 94122, U.S.A.
D
SIF = 7B-B-3-2III.r'ooo
fPp = (B)-(B)-(N) .B.B
fsp
(ST, pST, PT', PT") = N
fCx = B.B.B
fSt = zB.2B
fD = zH + (8.4).8.2.ro.ro.8.6-4-4 = 66 1 NDV
122 .
fV = 8.ro.8.8u6.6.6.4 = s6
~
D
=
7·7·7
fBT
P
=
b/b/b
AW
PW
SB
ASB
PSB
SD
AP
AM
AL
PL
S
H
pa pm pp
Ip
49
59
!8
2I
I4
35
I9
35
28
3I
5I
36 26/31 22 r8 /23 204 r68 I92
564
V
Rem. : Scutal anteromargin at 6 fL from AM and 7 p. from AL ; marginal zone
with rare punctations. Sensillae with 6 to 9 long branches (peduncle = 20 fL,
branched distal half = 31 fL, 7 branches) ; scutal setae with thin but conspicuous
barbs, AM >PL >AL. Eye lenses, 2 pairs of normal diameter. Galeala furcate.
Leg setae with few branches. One long barbed seta on dorsum of tarsus 3 can
be taken as a mastitarsala. Dorso-central body setae shorter than the externals or laterals (De>Dc). Famulus 2 pointed. Chelostyles with tricuspid cap,
no other teeth.
\Vith this last species I want to salute the memory of our colleague
H. \VoMERSLEY.
ABBREVIA TI ONS
For the usual abbreviations, the reader should refer to the following works :
VERCAMMEN-GRANDJEAN (P. H.), rg65. - Revision of the genera Eltonella Audy, rg56
and Micratrombicula Ewing, 1950, etc ... Acarologia, 7 (Suppl.) : 34-257 (see pp. 47-48)
WHARTON (G. W.), }ENKINS (D. W.), BRENNAN (J. M.), FULLER (H. S.) and PHILIP (C.B.),
rgsr. -The terminology and classification of trombiculid mites (Acarina : Trombiculidae). ]. Parasitol., 37 : 13-31.
-77-
REFERENCES
BRENNAN (J. M.) & DALMAT (H. C.), r96o. - Chiggers of Guatemala (Acarina : Trombiculidae). - Ann. Entom. Soc. Amer., 53 : r83-I9I.
BRENNAN (J. M.) & JoNES (E. K.), r96o. - Chiggers of Trinidad, B. W . I. (Acarina :
Trombiculidae). - Acarologia, 2 : 493-540.
HoFFMANN (A.), r960. - Contribuciones al conocimiento de los trombiculidos mexicanos
(Acarina : Trombicul.), sa parte. - Ciencia (Méx.), 20 : 99-ro5.
NADCHATRAM (M.) & LAKSHANA (P.), r965. - Myotrombicula verèammeni, a new species
of chigger (Acarina : Trombiculidae) from Thailand. - J. Med. Ent., 2 : 230-232.
RADFORD (C. D.), I954· - Sorne mites of Yemen. - Fieldiana (Zool.), 34 : 295-3I3.
VERCAMMEN-GRANDJEAN (P. H.), r96o. -Introduction à un essai de classification rationnelle des larves de Trombiculinae Ewing, I944 (Acarina-Trombiculidae). - Acarologia, 2 : 469-47L
VERCAMMEN-GRANDJEAN (P. H .), r963 a. - Le genre lVJyotrombicula Womersley &
Heaslip, I943, est-il un mythe? (Trombiculidae-Acarina).- Acarologia, 5 : 58-6o.
VERCAMMEN-GRANDJEAN (P. H.), r963 b. -Contribution à l'étude de la faune d'Afghanistan. 77 - Trombiculidae de Chiroptères. - Acarologia, 5 : 582-6r5 .
VERCAMMEN-GRANDJEAN (P. H.), r964. - Trombicula discors Brennan & Jones, r959,
est un véritable Myotrombicula Womersley & Heaslip, I943· (TrombiculidaeAcarina). - Acarologia, 6 : r27-r28.
VERCAMMEN-GRANDJEAN (P. H.) & FAIN (A.), r958 . - Les Trombiculidae parasites de
Chiroptères. Révision du genre Trombigastia. Description d'un ? M yotrombicula. - -Ann. Paras. Hum. & Comp., 33 : 5-35.
VERCAMMEN-GRANDJEAN (P. H.) & WATKINS (S. G.), r966. - Trombicula filamentosa
Radford, I954 is a Myotrombic~tla Womersley & Heaslip, 1943, in the Afghan
olosa group. - Acarologia, 8 : 7I-73.
WoMERSLEY (H.), r952. -The scrub-typhus and scrub-itch mites (Trombiculidae, Acarina) of the Asiatic-Pacific region. - Rec. S. Austr. Mus., 10 (2 parts), 673 p.
WOMERSLEY (H.) & HEASLIP, I943 · -The T1'ombic~tlinae (Acarina) or itch-mites of the
Austro-Malayan and Oriental regions.- Trans. Roy. Soc. S. Australia, 67 : 68-r42.
YUNKER (C. E.) & JoNES (E. K.), I96I. - Endoparasitic chiggers : I. Chiroptera, a new
host order for intranasal chiggers, with description of two new genera and species.
(Acarina : Trombiculidae). - J. Parasitol., 47 : 995-rooo.
Myo·trombicu!a ( Afexfainia)
chifonycteris
1
-79-
Myotrombicula ( Alexfainia) chilonycteris
7
JJ
10
50
8
9
-
8o-
Myotrombicula (V ergrandia) galei
4
)J
10
50
-
8r -
Myotrombicula (Perates) anophtalma
3
V
P
D
H
10
4
60
Acarologia, t. X, fasc. r, rg68.
6
-82-
.-
. u 1a ( p er a tes J
Myotromb!c
keras ta spis
monops
fviy o t rom bic u 1a ( P er a t es ) ma cr oz o ta
Myo t rombicul a ( /VIyo t rom bicula) vespertilionis
( Womers\ey
& Heas\ip, 1943)
4
De~
6
.,
H~
~Dc
-,
>
~-
~~--1~0--~--~~--~--~·
4V
-85-
Myotrombicu/a (Myotrombicula) womersleyi
3
H
D
P
V
100
6
30
4