Pseudonicsara (Cercana) furcata, Ingrisch, 2009

Ingrisch, Sigfrid, 2009, Revision of the genus Pseudonicsara Karny, 1912 (Orthoptera: Tettigoniidae: Conocephalinae: Agraeciini) 2185, Zootaxa 2185, pp. 1-122 : 53-54

Pseudonicsara (Cercana) furcata sp. n.

Figs. 6, 13, 17, 41, 75, 125, 162–163, 195, 221, 250, 291, 332, 386, 418, 467, 505, 535, map 4.

Holotype (male): Indonesia, Papua: Nieuw Guinea Exp. K.N.A.G. 1939, Paniai [3° 50' S, 136° 15' E], 30.IX.1939, depository: Collectio Fer Willemse, Eygelshoven, Netherlands ( CW), later to be deposited in Naturalis , Leiden ( RMNH).

Paratypes: Indonesia, Papua: same locality as holotype: 3 males, 4 females, 29.IX.1939 ( RMNH) ; 1 male, 29.IX.1939 ( CW) ; 1 female, 30.IX.1939 ( RMNH) ; 1 female, 10–11.XI.1939 ( CW) ; 1 male, 3 females, 19– 20.XI.1939 ( RMNH) ; 1 male, 1 female, 19–20.XI.1939 ( CW) ; 1 male, Oewaginana , 10–20.X.1939, Dr. P.J. Eyma ( CW) ; 1 female, Paniai District, Araboebivak [3° 40' S, 136° 40' E], 1750 m, 10.X.1939 ( RMNH) .

Diagnosis. P. furcata is probably close to P. stridulans , with which it was collected in the same area. The cerci of both species are rather short and narrow, baso-internal processes are absent, and of the two apicointernal processes is the ventral process compressed and prolonged, at least twice as long as the dorsal process. Males of P. furcata differ from the latter species by having the dorsal field of the tegmen not markedly widened ( Fig. 6); the ventral apico-internal process of the cercus is widening in apical area ( Figs. 195, 250) not acute as in P. stridulans ( Figs. 196, 251), and the dorsal process has the apex broadly obtuse with a short spine while it is divided into two acute lobes in P. stridulans . The apical parts of the titillators are roughly triangular with stiffened margin that carries an acute spine not oval with only a short stiffened area at margin ( Fig. 386). The female is similar to those of P. dodinga and P. stridulans . It differs by the subgenital plate having the subbasal lateral grooves not auricular and opened proximo-lateral, and the apex obtuse angularly excised ( Figs. 467, 505). Differences to other species are outlined in the key.

Description. Fastigium verticis in front of eyes 0.8 mm, from base 1.2 mm; dorsal eye length 1.3 mm; greatest diameter of eye 1.6 mm; index fastigium verticis from base: eye length 0.9. Face rugose. Pronotum with hind margin broadly rounded but subtruncate in middle (male, Fig. 41) or truncate (female). Tegmen little surpassing hind knees, costal field gradually narrowed from basal widening to apical third; dorsal field also widened for almost basal half ( Figs. 6, 17). Prosternal spine much shorter than coxa. Femora with the following number of spines on ventral margins: fore femur 2–6 external, 4–6 internal; mid femur 5–6 external, 0–2 internal; hind femur 4–8 external, no internal (in one female only there was a single spine near apex).

Male ( Fig. 6). Stridulatory file sinuate, 1.8–1.9 mm long; teeth at apex very narrow; with 68–77 teeth or 38.8–41.1 teeth per mm, in middle of file with 32.3–35.5 teeth per mm ( Fig. 75). Mirror pentagonal with rounded angles; apical margin oblique; 1.5–1.6 mm long, 1.6–1.7 mm wide; index length:width 1.0. Tenth abdominal tergite transverse but slightly globular in middle; central area in apical two thirds membranous and setose; apical margin broad-roundly excised in middle and with a broad, rounded lobe at both sides of excision ( Fig. 125). Epiproct broad, rounded-triangular with a broad furrow in middle ( Fig. 162). Projection of paraproct broad, obtuse, compressed. Cerci short cylindrical, slightly curved; apex strongly bent mediad and divided into two lobes: dorsal lobe moderately compressed, roughly triangular but apex truncate and resulting proximal angle rounded and distal angle with an acute spine; ventral lobe strongly compressed, longer than dorsal one, twisted and slightly widened towards apex; apex lobular ( Figs. 162–163, 195, 221, 250). Subgenital plate with styli little longer than excised area ( Fig. 291).

Titillators with basal parts slightly twisted and longitudinally curved; apical parts ovoid with internal surface with clinging hairs; granular margin rather wide, especially at apex, somewhat irregular and with a lateral spine ( Figs. 332, 386, 418).

Female ( Fig. 17). Ninth abdominal tergite with ventro-lateral apical area swollen. Tenth abdominal tergite transverse. Subgenital plate with a strong median carina, apex bilobate with lobes roughly triangular and roundly excised in between; lateral areas curved dorsad and with an ovoid groove ( Figs. 467, 505, 535).

Coloration. Uniformly medium brown (not well preserved, probably at least partly green when alive). Face reddish brown. Tegmen with yellow veins and veinlets and brown cells, but pattern not striking. Hind knees brown (in alive specimens probably hind legs green, knees brown). Ovipositor dark reddish brown.

Measurements (8 males, 5 females): body male 22–25, female 24–27; pronotum male 6.8–7.8, female 6.8–7.0; tegmen male 17.0–21.5, female 23–25; hind femur male 13.0–14.5, female 15.0–16.5; antenna female 70–75; ovipositor 14.5–16.0 mm.

Etymology. Named for the shape of the male cerci.