A review of the mite subfamily Harpirhynchinae (Acariformes: Harpirhynchidae) — parasites of New World birds (Aves: Neognathae)
Author
Bochkov, Andre V
Author
Oconnor, Barry M.
Author
Klompen, Hans
text
Zootaxa
2015
4023
1
1
130
journal article
10.11646/zootaxa.4023.1.1
8f4e6997-9864-4b83-9687-c0beffe0b6ae
1175-5326
399838
6BC0B13B-940D-402E-B894-3C80E034840B
Harpyrhynchoides megascops
Bochkov
, OConnor and Klompen sp. nov.
(
Figs. 30–32
)
Description
. FEMALE (
holotype
, 7
paratypes
,
Figs. 30
,
32
A–E). Body, including gnathosoma, 320 long (3200– 350) and 265 wide (250–275). Gnathosoma about 85 long and 100 wide. Palp 43 long (43–50) and 37 wide (37– 40), without lateral notches. Proximal segment of palp with 5–6 membranous triangular projections ventrally. Palpalae thickened (
Fig. 32
A):
dF
21–25 long with 7–8 pectinations,
dG
12–15 long with 7–8 pectinations, and
l”G
16–18 long with 8–9 pectinations. Setae
vF
about 40 long, smooth. Subcapitulum ventrally without membranous projections. Peritrematal branch about 50 long.
Idiosoma
245–260 long. Smooth cuticle between peritrematal branches and transverse striations with numerous microscales. All dorsal setae slightly serrate. Dorsal shield 185 long (185–195) and 200 wide (185–200). This shield devoid of ornamentation, with widely convex posterior margin.
Idiosoma
ventrally with scales, spreading from posterior margin of subcapitulum to level of setal bases
3a
. Small area of scales present between coxal fields II and III. Ventral setae
h1
present. Median area between setal bases
3a
and
h1
smooth. Setae
1a
situated slightly anterior to level of setal bases
1c
. Setae
3a
situated at level of coxal fields II. Distance between setal bases
3a
about 3 times longer than between setal bases
1a
. Coxal fields I and II covered by distinct longitudinal striae. Vulvar pocket-like structure without long lateral longitudinal folds. Vulvar apodemes well developed. Lengths of setae:
vi
165 (140–170),
ve
135 (110–135),
si
115 (105–115),
se
120 (110–125),
c2
120 (120–125),
h1
and
h
2
15–17. Solenidia
ω
1
I and
ω
1
II 7–8 long, narrow straight and conical, with rounded apex. Empodium of tarsi I and II not elongated, only slightly longer or subequal to respective tarsus. Genua I and II with 3 setae (
d
,
l’
,
v’
), femora I and II with 2 setae (
d
and
v
), trochanters I and II with 1 seta (
v
). Apical segment of leg III with 5 setae; preapical segment with 1 seta. Leg IV with 2 segments; preapical segment without setae; apical segment with 3 setae.
FIGURE 30
.
Harpyrhynchoides megascops
sp. nov
.
, female: A—dorsal view; B—ventral view.
FIGURE 31
.
Harpyrhynchoides megascops
sp. nov
.
, male: A—dorsal view; B—ventral view.
FIGURE 32
.
Harpyrhynchoides megascops
sp. nov
.
, details of female (A–E): A—palp in dorsal view; B—tarsus I in dorsal view; C—tarsus I in ventral view; D—tarsus II in dorsal view; E—tarsus II in ventral view. Male (F–H): F—palp in dorsal view; G—solenidion
ω1
I; H—solenidion
ω1
II.
MALE (6
paratypes
,
Figs. 31
,
32
F–H). Body, including gnathosoma, 270–280 long and 215–220 wide. Gnathosoma about 75 long and 80 wide. Palp about 37 long and 28 wide, without notches. Proximal segment of palp with 3–4 membranous triangular projections ventrally. Palpalae subequal in length, with few barbs (
Fig. 32
F):
dF
and
dG
about 14,
l”G
about 12. Setae
vF
about 40 long, smooth. Subcapitulum ventrally as in female.
Idiosoma
about 200 long. Smooth cuticle between peritrematal branches and transverse striations with numerous microscales. Dorsal shield 165–170 long and 160–170 wide. Aedeagus about 100 long, almost straight, situated posterior to genital opening; its posterior end distinctly bifurcated. Genital opening situated in posterior half of dorsal shield. Genital arch about 65 long. Genital setae about 17 long; setae
g2
situated equidistant from
g1
and
g3
. Distance
g1–g1
about 37,
g2–g2
about 35, and
g3–g3
20. Setae
vi
about 45 long,
ve
and
si
about 85 long,
se
about 100 long, and
c2
about 115 long—all slightly serrate.
Idiosoma
ventrally with scales distributed as in female, distinct smooth area present around setae
3a
. Coxal fields I and II covered by distinct longitudinal striae. Leg I and II setation as in female. Solenidion
ω
1
I about 8 long, strongly thickened, about 6 wide in median part; solenidion
ω
1
II about 9 long, straight and conical, with rounded apex. Apical segment of leg III with 5 setae; preapical segment with 1 seta. Leg IV with 3 setae.
Type
material
.
Holotype
female (
UMMZ
BMOC
09-0207-001, #1),
7 female
and
6 male
paratypes
(
UMMZ
BMOC
09-0207-001, #2–14) from
Megascops
asio
(Linnaeus)
(
Strigiformes
:
Strigidae
) (
UMMZ
241673) [in skin of body],
USA
: Michigan, Oakland Co., Commerce Twp., Marble Ct.,
42.5644286°N
,
83.4637356°W
(from specimen catalog),
17 January 2009
, via Howell Nature Center.
Type
deposition
.
Holotype
and most of
paratypes
in
UMMZ
,
1 female
and
1 male
paratypes
in
ZISP
,
1 female
in
OSAL
.
Etymology
. The specific epithet is derived from the generic name of the host and is a noun in apposition.
Hosts and distribution
.
Megascops
asio
(Linnaeus)
(
Strigiformes
:
Strigidae
) from
USA
(Michigan) (present paper).
Differential diagnosis
. Among species of complex A this new species is closest to
Harpyrhynchoides squamosus
(
Fain, 1972
)
. In females of both these species, genua I and II have three setae each, femora I and II have two setae each, proximal segment of leg III has a single seta, proximal segment of leg IV lacks setae, distal segment of leg IV has three setae, the idiosomal venter is covered by scales, and coxal fields I and II are covered by distinct longitudinal striations. These species differ from each other by the following character states. In females of
H. megascops
sp. nov
.
, setae
h1
and
h2
are subequal in length (vs.
h1
about three times longer than
h
2
in
H. squamosus
), setae
3a
are do not come close to reaching the posterior margin of the body (vs. reaching), the vulvar lips are without verrucosities (vs. with verrucosities in posterior end); in males, an unstriated area is present around setae
3a
(vs. absent). Males of the new species differ from
Harpyrhynchoides asio
(
Fain, 1972
)
(only males are known) by short setae
vi
, about 45 long (vs. 100 long in
H. asio
), the posteriorly bifurcated aedeagus (vs. without posterior bifurcation), and by the much longer genital arch, which is only three times shorter than the dorsal shield (vs. five times shorter).