Habetia nigricauda, Ingrisch, 2021

Ingrisch, Sigfrid, 2021, Revision of the genera Habetia Kirby, 1906 and Parahabetia gen. nov. from New Guinea (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini), Zootaxa 5020 (2), pp. 201-256 : 238

Habetia nigricauda sp. nov.

Figs 2I , 4I , 6C , 7N–O , Map 1(19).

Holotype (female): Papua New Guinea: Northern , Popondetta, elev. 60 m (8°46’S, 148°14’E), 1.vi.–31.vii.1970, leg. R. Straatman —depository: Naturalis Biodiversity Center, Leiden ( NBC).

Other specimens studied: same data as holotype— 1 female (paratype, NBC) .

Diagnosis. The new species is striking for the dark tegmen with light veins and veinlets and the dark brown to black subgenital plate. Apart from the dark coloration, H. nigricauda sp. nov. is similar to H. wau sp. nov. but differs in details of subgenital plate and ovipositor. The female subgenital plate has the transverse subbasal furrow markedly delimited by a rather deeply impressed and narrow furrow instead of becoming gradually flattened toward fore and hind margins in H. wau , this is more strongly expressed by bulging elevations along anterior and lateral margins in H. nigricauda that are absent in H. wau . The ovipositor is rather short for the genus in both species. In H. nigricauda it is in the mean little longer than in H. wau , 24.3 against 20.9 mm, and H. nigricauda is generally little larger. The black coloration of the hind knees is distinct and more extended in H. nigricauda , little expressed in H. wau .

Description. Coloration of face pale, of general color; ventral and lateral areas of antennal scrobae and ventrolateral margin of frons and ventral margin of genae black; mandibles in basal area black, brownish thereafter ( Fig. 4I ). Tegmen dark brown in anterior area, gradually changing to medium brown posteriorly; veins and veinlets pale yellowish. Hind knees black. Subgenital plate black, lighter toward end and at lateral margins. Ovipositor brown. Femora with the following number of spines on ventral margins: (1) a 5–7, p 7–8; (2) a 6, p 2–3; (3) a 9–12, p 10–12 (n=2).

Male unknown.

Female. Subgenital plate with anterior margin raised; baso-lateral areas expanded dorsad, with parallel margins and convex dorsal end, furrowed along mid-length; disc of subgenital plate in sub-basal area with a transverse groove, which is bordered along proximal and lateral margins by a convex, bulging carina, the furrow widened in middle and narrowing towards both sides; area behind furrow little elevated and with flat surface; lateral margins of disc behind baso-lateral expansions with, in ventral view converging, and in lateral view bulging lateral margins that terminate into a pair of lateral, spine-like projections, apical margin between these projections straight ( Figs 6C , 7N–O ). Coloration of subgenital plate black in anterior area including lateral expansions and changes to dark and medium brown in apical area; dorsal margin of baso-lateral expansions and lateral angles of transverse bulge yellow brown; apical area of bulging lateral margins and tip of apical spine-like projections pale yellowish. Ovipositor elongate but shorter than body, with faintly convex margins around mid-length; tip obtuse ( Fig. 2I ).

Measurements (2 females).—Body w/wings: 43–45; body w/o wings: 30–32; pronotum: 8.1–8.4; tegmen: 32.5; hind femur: 24; ovipositor length: 23.5–25.0; ovipositor height: female 2.0 mm.

Etymology. The name of the new species refers to the color of the female subgenital plate, which is largely black; from Latin niger, nigra, nigrum = black and cauda = tail or end piece.

Figures

FIGURE 2. Habitus of Habetia species with moderately long ovipositor (A–J, females; K, male): A, H. bivittata sp. nov. (Chimbu Valley); B, H. dentata sp. nov. (Saidor); C, H. elevata sp. nov. (Salamaua); D, H. pinnigera sp. nov. (Madang); E, H. kondiu sp. nov. (Mendi); F, H. simbai sp. nov. (Simbai); G, H. wau sp. nov. (Nami Creek); H, H. sororcula sp. nov. (Sentani); I, H. nigricauda sp. nov. (Popondetta); J, H. quatrispina sp. nov. (Pionierlager); K, H. pilleata sp. nov. holotype (Wau 1200m). All scales 10 mm.

FIGURE 4. Frons of Habetia species: A–C, H. bivittata sp. nov., variation of the black marks (A Goroka male, B Mt. Wilhelm male, C Keltiga female); D, H. dentata sp. nov. female (Saidor); E, H. kondiu sp. nov. female (Kubor Range); F, H. pinnigera sp. nov. female (Madang); G, H. lalibu sp. nov. male (Lalibu); H, H. simbai sp. nov. female (Simbai Valley); I, H. nigricauda sp. nov. female (Popondetta); J, H. quatrispina sp. nov. female (Pionierlager); K, H. wau sp. nov. male (Nami Creek); L, H. sororcula sp. nov. female (Ifar). Scales 5 mm.

FIGURE 6. Female subgenital plate of Habetia species in about ventral view: A–B, H. bivittata sp. nov. (A Chimbu Valley, B Moife); C, H. nigricauda sp. nov. (Popondetta); D, H. wau sp. nov. (Upper Watut); E, H. simbai sp. nov. (Simbai Valley); F, H. dentata sp. nov. (Saidor); G-H, H. kondiu (G Mt Hagen, H Mendi); I, H. pinnigera sp. nov. (Madang); J, H. elevata sp. nov. (Salamaua); K, H. sororcula sp. nov. (Ifar); L, H. quatrispina sp. nov. (Pionierlager), the arrow points at the lateral spine-like projection. Scales 1 mm.

FIGURE 7. Female subgenital plate of Habetia species in lateral (B–C, E–I, M–N) and oblique lateral (A, D, J–L, O) view: A–B, H. bivittata sp. nov. (A Aiyura, B Mt Wilhelm); C, H. quatrispina sp. nov. (Pionierlager); D, H. kondiu sp. nov. (Kubor Range); E, H. simbai sp. nov. (Simbai Valley); F–G, H. wau sp. nov. (F Nami Creak, G Wau); H, H. sororcula sp. nov. (Ifar); I–J, H. pinnigera sp. nov. (Madang); K, H. multispinulosa Griffini, 1908 (Rigo Dorom); L–M, H. elevata sp. nov. (Salamaua); N–O, H. nigricauda sp. nov. (Popondetta). The arrows in A, C and H point at the tip of the dorso-lateral lobes. Scales 1 mm.