The genus Alphocoris in the Indomalaya (Hemiptera: Heteroptera: Scutelleridae)
Author
Rédei, Dávid
Author
Tsai, Jing-Fu
Author
Jindra, Zdeněk
text
Zootaxa
2018
2018-02-21
4382
2
299
320
journal article
30693
10.11646/zootaxa.4382.2.5
92e78463-0b3c-4d79-a904-6bf6b1efc959
1175-5326
1182057
3F5277F2-9FA5-4004-8BFF-4A1627AC6C07
Alphocoris asper
Rédei, Tsai & Jindra
,
sp. nov.
Figs. 13–18
, 25–27, 32–33, 41–43, 46, 49–50, 57–58
Alphocoris lixoides
(non Germar, 1839):
Dallas (1851: 41)
and subsequent authors. Misidentification.
Alphocoris lixoides
(misidentification):
Dallas (1851: 41)
(record),
Walker (1867: 59)
(record),
Atkinson (1884: 166)
(distribution),
Atkinson (1887: 187)
(redescription, distribution),
Distant (1902: 67)
(redescription, habitus, figures, distribution),
Maxwell-Lefroy (1909: 673)
(habitus).
Type
material.
Holotype
:
♂
, “
INDIA
OR. \ RAMANDOROG \ KATONA 1919”; mounted on card, intact (
HNHM
).
Paratypes
: same label as in
holotype
(
1 ♂
HNHM
); “
INDIA
occ.,
Maharashtra
state \
3–6 October 2005
, Wai enV. \
70 km
S of Pune, F. Kantner lgt.” (
1 ♂
1 ♀
ZJPC
).
Diagnosis.
Similar to
A
. naso
sp. nov.
in size and habitus, but it can be distinguished from the latter species by the conspicuously coarse punctation of the dorsum and the concaVe lateral margins of the posterior third of scutellum (
Fig. 13
). The male genitalia (
Figs. 29–30
,
38–40, 43
,
51–52
) and female terminalia (
Figs. 57–58
) offer seVeral diagnostic characters for separation of the two species.
Description.
Colour, integument and vestiture
as in
A
. naso
sp. nov.
but with the following differences: punctures of dorsum conspicuously coarser and deeper; midline of dorsum lacking distinct unpunctured, smooth band; dark longitudinal bands on pronotum and scutellum formed by dark punctures obscure, rather indistinctly delimited; abdominal Venter almost continuously dark except of lateral margins and a narrow median Vitta interrupted at intersegmental sutures.
Structure. Body
elongate, about 2.7 times as long as its humeral width, similar in shape to
A
. naso
sp. nov.
but less strongly constricted posteriorly.
Head
(Figs. 25–26) similar to that of
A
. naso
sp. nov.
, about as wide as long, width across eyes about 1.55 times as long as interocular distance; distance from anterior margin of eye to leVel of apex of mandibular plate measured along longitudinal axis of body about 2.0 times as long as length of eye in dorsal View; apical, protruding portion of clypeus about half as long as distance from anterior margin of eye to leVel of apex of mandibular plate measured along longitudinal axis of body; mandibular plates with a strong longitudinal carina laterally anteriad of Ventral margin of eye, Visible in dorsal View.
Labium
slightly surpassing apices of hind coxae.
Thorax
.
Pronotum
about 1.5 times as broad as its median length; lateral margins Very finely granulate in their anterior halVes, slightly concaVe posteriad of leVel of calli.
Scutellum
about 1.5 times as long as its greatest width, posterior portion less strongly tapering than in
A
. naso
sp. nov.
, with conVerging lateral margins distinctly concaVe, apex broad, transVersely truncate, distance between paired protruding terminal angles more than two times as long as width of anterior portion of clypeus, not surpassing apex of abdomen (occasionally leaVing extreme apex of abdomen exposed in dorsal View).
Pregenital abdomen
broader, less strongly tapering apically than in
A
. caudatus
sp. nov.
, Ventrite VII of male relatiVely short and broad (Fig. 27), posterolateral angles of Ventrites III–IV each produced into a minute but distinct spine exposed laterad of scutellum in dorsal aspect.
External male genitalia. Genital capsule
(
Figs. 32–33
,
41
) with Ventral rim distinctly conVex in dorsal View (
Fig. 32
), posterior portion weakly produced (
Fig. 33
).
Paramere
as in
Figs. 42–43
.
Phallus
(
Figs. 46
,
49–50
) with second pair of conjunctiVal processes (cp-II) subdiVided into 3+3 branches, dorsal branch (cp-II1) membranous, relatiVely short, Ventral branches (cp-II2, cp-II3) sclerotized, elongate, apex slightly dilated, club-like; conjunctiVal pad (
Fig. 49
: cpd) much broader than in
A
. naso
sp. nov.
; aedeagus moderately dilated subapically, distalmost portion elongate, relatiVely narrow, membranous.
FIGURES 13–18.
Alphocoris asper
sp. nov.
13–15, male holotype; 16–18, female paratype. Dorsal (13, 16), lateral (14, 17) and ventral (15, 18) views. Scale in mm.
External female genitalia. Terminalia
as in
Figs. 57–58
.
Ovipositor
: dorsomesal margin of laterotergite IX obliquely truncate around postgenital abdomen; ValVulae and ValVifers of oVipositor much similar to the condition found in
A
. naso
sp. nov.
: ValVulae VII as in
A
. naso
sp. nov.
; ValVulae IX membranous, but rami IX can be traced as a Very fine, thin, weakly sclerotized and pigmented line along anterior margin of ValVulae IX; distinct, sclerotized gonangulum lacking.
Inner ectodermal genital tracts
: gynatrium and spermatheca highly similar to the condition found in
A
. naso
sp. nov.
therefore not illustrated.
Measurements
(in mm;
N
=
3 ♂♂
/
1 ♀
). Body length 7.00–7.74 / 7.60; length of head 1.68–1.72 / 1.69, width across eyes 1.68–1.76 / 1.70, interocular distance 1.08–1.23 / 1.16; lengths of scape 0.32–0.39 / 0.38: basipedicellite 0.27–0.34 / 0.32: distipedicellite 0.24–0.25 / 0.26: basiflagellum 0.39–0.44 / 0.42: distiflagellum 0.55–0.59 / 0.56; median length of pronotum 1.70–1.86 / 1.81, humeral width 2.60–2.84 / 2.80; median length of scutellum 3.92–4.41 / 4.13, greatest width 2.56–2.84 / 2.80.
Discussion.
The species illustrated by
Distant (1902: 67, fig. 30)
and
Maxwell-Lefroy (1909: plate LXXII: fig. 10)
as
A
. lixoides
was likely
A
. asper
sp. nov.
, but its identity cannot be unambiguously elucidated; no specimens from the localities listed by
Distant (1902)
(
Bombay
, Khandala) were found in the BMNH where W.L. Distant’s collection is currently deposited.
FIGURES 19–17.
Alphocoris
spp., diagnostic characters.
19–21,
A. caudatus
sp. nov.
; 22–24,
A. naso
sp. nov.
; 25–27,
A. asper
sp. nov.
Head, dorsal view (19, 22, 25); same, lateral view (20, 23, 26); posterior part of abdomen of male with tip of scutellum, ventral view (21, 24, 27). Lettering: scu = scutellum. Scales in mm.
FIGURES 28–33.
Alphocoris
spp., genital capsules.
28–29,
A. caudatus
sp. nov.
; 30–31,
A. naso
sp. nov.
; 32–33,
A. asper
sp. nov.
Dorsal view, left paramere removed (28, 30, 32); lateral view (29, 31, 33). Scales in mm.
Etymology.
The specific epithet is the Latin adjectiVe
asper
,
-a
,
-um
(‘rough’, ‘coarse’), giVen in allusion to the coarsely punctured dorsum.
Distribution.
Only known from Ramandorog [= Ramdurg],
Goa
State, and Wai,
Maharashtra
State, of western
India
. PreVious record of
A
. lixoides
from
Maharashtra
(
Bombay
, Khandala) (
Distant 1902
) possibly at least partly pertain to this species.