Revision of the genus Pseudonicsara Karny, 1912 (Orthoptera: Tettigoniidae: Conocephalinae: Agraeciini) 2185
Author
Ingrisch, Sigfrid
text
Zootaxa
2009
2009-08-06
2185
1
122
journal article
11755334
Pseudonicsara (P.) cervus
sp. n.
Figs. 73
,
115
,
156
,
193
,
225–226
,
248
,
276
,
326
,
372
,
390
,
411
,
471
,
510
,
522
, map 3.
Holotype
(male):
Papua New Guinea
:
Madang Dist.
,
Kairong area
[
3° 58' S
,
143° 56' E
],
XII.1971
–
I.1972
,
J. Menzas
, depository:
Collectio Fer Willemse
,
Eygelshoven
,
Netherlands
(
CW
), later to be deposited in
Naturalis
,
Leiden
(
RMNH
).
Paratypes
:
3 females
, same data as holotype (
CW
)
.
Diagnosis.
The new species shares with
P. forceps
that the male cerci have two apico-internal processes, of which one lies nearly in the prolongation of the cercus.
P. cervus
differs by having the dorsal apico-internal process in prolongation of cercus, which is curved and has the apex obtuse triangular; the ventral process is compressed and has the apex rounded (
Figs. 115
,
193
). It also differs in having two baso-internal processes of the cercus and by the titillators being short with the apical margin protruding on both sides (
Figs. 372
,
390
). The female subgenital plate has a deep median furrow and a pair of large lateral grooves covering most of the plate; the dorso-lateral-apical angles are little acute angularly projecting (
Figs. 471
,
510
). Differences to other species are outlined in the key.
Description.
Fastigium verticis in front of eyes
0.9 mm
, from base
1.2 mm
; dorsal eye length
1.4 mm
; greatest diameter of eye
1.6 mm
; index fastigium verticis from base: eye length 0.8. Face shining with large but shallowly impressed dots in middle, almost smooth lateral, rugose again towards genae. Pronotum shining. Tegmen little surpassing hind knees; rather wide at base, apical half narrow. Femora with the following number of spines on ventral margins: fore femur 6–8 external, 6 internal; mid femur 6 external, 3 internal near base; hind femur 7–9 external, 0–2 minute internal spines in basal area.
Male. Stridulatory file slightly sinuate, 2.0 mm long; teeth at apex very dense and indistinct [70 distinct and 40 indistinct teeth in apical area], together with 110 teeth or 53.8 teeth per mm, in middle of file with 29.5 teeth per mm (
Fig. 73
). Mirror little widening anteriorly; apical margin substraight;
1.4 mm
long,
1.2 mm
wide; index length:width = 1.2. Tenth abdominal tergite transverse but globular in middle; apical margin broad-roundly excised between two short, obtuse, projecting lobes (
Fig. 115
). Epiproct acute triangular with lateral margins upcurved, in apical half deeply furrowed in midline (
Fig. 156
). Projection of paraproct short, transverse, obtuse, dorso-ventrally compressed. Cerci conical, apical third dorso-ventrally compressed, curved mediad, terminating in a triangular flap; internal surface with a greatly projecting rim over almost whole cercus length running at proximal end into a compressed projection pointing mediad, carrying a minute spinule on tip, at distal end with a compressed projection, which is slightly twisted and pointing ventrad, with apex obtuse; below projecting rim internal surface with another small projection (
Figs. 193
,
225–226
,
248
). Subgenital plate wider than long with apical excision wide and shallow (
Fig. 276
).
Titillators with basal parts broad, simple; apical parts widening towards apex; internal surface with clinging hairs; margin granular, irregularly sinuate (
Figs. 326
,
372
,
390
,
411
).
Female. Tenth abdominal tergite transverse, apex triangularly excised in middle. Subgenital plate with a deep and wide median furrow, sclerites on both sides of furrow with elevated margins and deeply depressed surface; apex with a triangular projection at both lateral angles and widely excised in between; dorso-lateral of lateral margins with a large rounded lateral sclerite at each side (
Figs. 471
,
510
,
522
).
Coloration.
Uniformly yellowish brown. Face with a blackish brown vertical band from fastigium frontis to dorsal area of clypeus, widening ventrad to a transverse band along clypeo-frontal suture; median ocellus light; antennal scrobae, ventral surface of scapus and apex of mandibles also blackish brown. Tegmen with yellow or white veins and brown cells. Legs ochre (green when alive?); hind knees brown. Fore tibia with dorsal areas slightly infumate.
Measurements
(
1 male
,
3 females
): body: male 24, female 24–27; pronotum: male 6.5, female 6.7–7.2; tegmen: male 22, female 24–26; hind femur: male 14, female 15–18; ovipositor:
15–16.5 mm
.
Etymology.
Named for the horn-shaped male cercus; noun in apposition.