Scratching the surface? Taxonomic revision of the subgenus Schizoptera (Odontorhagus) reveals vast undocumented biodiversity in the largest litter bug genus Schizoptera Fieber (Hemiptera: Dipsocoromorpha)
Author
Leon, Stephanie
Author
Weirauch, Christiane
text
Zootaxa
2016
4184
2
255
284
journal article
37901
10.11646/zootaxa.4184.2.2
6dce6de7-19d7-462d-a123-e94ad5135e89
1175-5326
164749
5B8F792E-EEDB-494D-9EB3-48CA6174CC6E
Key to the species of
Schizoptera
(
Odontorhagus
)
This key includes all new species as well as those species for which re-descriptions of the genitalia were available (
S. decius
,
S. commodus
, and
S. stricklandi
), and
S. trinitatis
, for which the microscopic slide mount image sufficed for species-level diagnostic features of the subgenital plate.
1 Subgenital plate distinctly asymmetrical with longitudinal margin forming an angular incision with posterior margin of left lateral process (
Figs 5B, 5K
), or with a large, irregular incision (
Fig. 5J
)............................................ 2
- Subgenital plate weakly asymmetrical with rounded, or almost rounded tip........................................ 9
2 Subgenital plate with two processes, a club-shaped anterior and a jagged tab-like posterior process, left inner margin of pygophore with long, curving process (
Fig. 5J
)..................................................
S
.
enigmatica
,
n. sp.
- Subgenital plate with a single lateral process; left inner margin of pygophore short, without process.................... 3
3 stVII with a small process on posterior margin............................................................... 4
- stVII without small process on posterior margin............................................................. 5
4 Subgenital plate short, with left side reduced, forming an angular incision>90º, right conjunctival appendage large and serrated, body small (
Fig. 5E
)...................................................................
S. brevis
,
n. sp.
- Subgenital plate lateral process with a straight posterior margin forming a 90º angle with longitudinal margin of subgenital plate (
Fig. 5B
); right conjunctival appendage thin or robust, with or without serrations; body relatively large............. 6
5 Lateral process of subgenital plate small and balde-like, with a straight posterior margin forming a 90º angle with longitudinal margin of subgenital plate (
Fig.
5
V), general coloration dark brown, with SC+C distinctly lighter than remainder of hemelytra (
Fig. 2
,
S trivialis
,
n. sp.
)..................................................................
S. trivialis
,
n. sp.
- Lateral process of subgenital plate formed by a slit-like lateral and triangular caudal incisions, lateral process of subgenital plate broad and lobe shaped, right paramere with a bifurcating process (
Fig. 6N
), right conjunctival appendage with trifurcating tip, vesica short, forked and serrated (
Fig. 6N
).............................................
S. monstrosa
,
n. sp.
6 Lateral process of subgenital plate thumb-shaped, with notch on anterior margin, forming a “key and lock” appearance with process of stVI (
Figs 5K
,
6N
)............................................................................ 7
- Lateral process of subgenital plate blade-shaped, without a notch on anterior margin................................ 8
7 Head slightly concave in ventral view (
Fig. 3
,
S. exacta
,
n. sp.
), body coloration uniformly light brown, right paramere thin, right conjunctival appendage needle-like, vesica uniformly thin, forming at least three coils, anophore with prominent dorsal fold....................................................................................
S. exacta
,
n. sp.
- Head flat in ventral view (
Fig. 3
,
S. insidiosa
,
n. sp.
), body coloration dark brown, with SC+ C distinctly lighter, right paramere large, vesica uniformly thin forming at least four coils, anophore with fingerlike process on dorsal wall and a wide
dorsal aperture (
Fig. 6M
).................................................................
S. insidiosa
,
n. sp.
8 M2 vein distinctly curving, forming a wedge-shaped anterior membranal cell (
Fig. 4
,
S. trinitatis
), process of stVI small, and tooth-like..............................................................................
S. trinitatis
Emlsey
- M2 vein straight (
Fig. 2
,
S. angularis
,
n. sp.
), forming a triangular anterior membranal cell, process of stVI tab-like, body small, vesica uniformly long and thin (
Fig. 5B
)................................................
S
.
angularis
,
n. sp.
9. stVI with process on posterior margin.................................................................... 10
- stVI without process on posterior margin.................................................................. 13
10 Process of posterior margin of stVI triangular, and tooth-like................................................... 11
- Process of posterior margin of stVI blunt, tab-like........................................................... 12
11 Tooth-like process of stVI large, about 1/3 length of stVI with jagged edges (
Fig. 5H
), lateral process of subgenital plate toothshaped with a serrated posterior margin, subgenital plate lateral margin distinctly curving and sclerotized (
Fig. 5H
), general coloration brown, eyes large, about 1/2 width of synthlipsis.......................................
S. dentata
,
n. sp.
- Tooth-like process of stVI small, about 1/10 length of stVI (
Fig. 5D
), lateral process of subgenital plate thumb-like, lateral margins of subgenital plate distinctly jagged, general coloration dark brown (
Fig. 2
,
S. aspera
,
n. sp.
), eyes small, about 1/3 width of synthlipsis........................................................................
S. aspera
,
n. sp.
12 Tab-like process of stVI large, about 1/3 length of stVI, process of subgenital plate blunt and rectangular, pointing apically (
Fig. 5G
), body coloration dark brown, with fuscous patch coving 1/2 of wing membrane (
Fig. 2
,
S. decius
).............................................................................................
S. decius
McAtee & Malloch
- Tab-like process of stVI small, about 1/6 length of stVI, process of subgenital plate blunt, not fully differentiated from subgenital plate (
Fig. 6P
), general coloration dark brown, wing membrane without fuscous patch (
Fig. 3
,
S. quasicompleta
,
n. sp.
)....................................................................................
S. quasicompleta
,
n. sp.
13 Process of subgenital plate uniform, without bifurcation...................................................... 14
- Process of subgenital plate bifurcating....................................................................22
14 Process of subgenital plate relatively large, well-differentiated from subgenital plate............................... 15
- Process of subgenital plate small, not well-differentiated from subgenital plate.................................... 16
15 Process of subgenital thick and straightly projecting to the left................................................. 17
- Process of subgenital plate thin and slightly projecting caudally................................................ 18
16 Subgenital plate process rounded, projecting apically........................................................ 20
- Subgenital plate process triangular, or with jagged margins.................................................... 21
17 Process of subgenital plate elongate, smooth and handle-shaped (
Fig. 5C
), vesica long and forming almost two coils, anophore forming a half-pipe, body size large (~
1.53–1.59mm
), general body coloration dark brown (
Fig. 2
,
S. ansata
n. sp.
)...............................................................................................
S. ansata
,
n. sp.
- Process of subgenital plate stout, with rectangular base, and modified tip......................................... 19
18 Process of subgenital plate hook-shaped, curving and projecting caudally, right paramere large, right conjunctival appendage large, curving and serrated, left conjunctival appendage prong-shaped (
Fig. 6
F), body coloration light brown (
Fig. 3
,
S. commodus
)....................................................................
S. commodus
McAtee & Malloch
- Process of subgenital plate thin and needle-shaped, almost projecting caudaly, right conjunctival appendage flat, with serrations on ventral margin, body coloration uniformly dark brown (
Fig. 2
,
S. acuta
,
n. sp.
).................
S. acuta
,
n. sp.
19 Process of subgenital plate shaped like a fishtail (
Fig. 6O
), right paramere simple, without serrations, right conjunctival appendage tapering with a serrated tip (
Fig. 6O
), left conjunctival appendage with blunt and finshaped processes, body coloration light brown (
Fig. 3
,
S. piscicaudata
,
n. sp.
)........................................... ..
S. piscicaudata
,
n. sp.
- Process of subgenital plate uniformly rectangular (
Fig. 6T
), apex of subgenital plate almost connical, right paramere with a large, serrated process, right conjunctival appeandage small, and obascured by vesica, left conjunctival appendage cashewshaped (
Fig. 6T
), body coloration dark brown (
Fig. 3
,
S. singlularis
,
n. sp.
).........................
S. singularis
,
n. sp.
20 Body size broadly ovoid, coloration light brown without fuscous patch on wing membrane, (
Fig. 3
,
S. simpla
,
n.sp.
), process of subgenital plate small and tab-like, left lateral margin of subgenital plate slightly curving and sclerotized (
Fig. 6S
), vesica long and thing, anophore with prominent dorsal fold..................................................
S. simpla
,
n. sp.
- Body ovoid, coloration light brown with prominent fuscous patch on wing membrane (
Fig. 2
,
S. dolosa
,
n. sp.
), process of subgenital plate simple and tab-like, left inner-lateral margin of pygophore distinctly sclerotized (
Fig.
5I
), vesica short, tapering and with serrations on apex, anophore with two distinct dorsal keels (
Fig.
5i
).........................
S. dolosa
,
n. sp.
21 Process of subgenital plate short, jagged and thumb shaped (
Fig. 5 L
), left conjunctival appendage with three visible processes (
Fig. 5L
), anophore with short, blunt process on dorsal wall, body ovoid, coloration light brown, eyes large, wider than synthlipsis (
Fig. 3
,
S. gorgonensis
,
n. sp.
).......................................................
S. gorgonensis
,
n. sp.
- Process of subgenital plate small, almost triangular (
Fig. 6U
), anophore with a heart-shaped dorsal fold, body ovoid, coloration dark brown (
Fig. 4
,
S. stricklandi
).........................................................
S. stricklandi
China
22 Bifurcating process of subgenital plate without serration on margins of anterior or posterior bifurcations................ 23
- Bifurcating process of subgenital plate with blade-shaped anterior and lanceolate posterior bifurcations, anterior margin of lanceolate bifurcation of subgenital plate process with distinct serrations (
Fig. 6R
), right paramere with a long, thin and serrated process, apex of right conjunctival appendage serrated, body amygdaliform, coloration dark brown (
Fig. 3
,
S. serrata
,
n. sp.
).........................................................................................
S. serrata
,
n. sp.
23 Bifurcating process of subgenital plate shaped like a claw, with larger anterior and shorter posterior bifurcations (
Fig. 6W
), body coloration light brown (
Fig. 3
,
S. ungulata
)...............................................
S. ungulata
,
n. sp.
- Bifurcating process of subgenital plate root-shaped, with a stem and bifurcating tip, body coloration dark brown (
Fig. 2
,
S. radicata
,
n. sp.
)........................................................................... ..
S. radicata
,
n. sp.