Habetia curvata, 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 : 215-216

Habetia curvata sp. nov.

Figs 3D–F , 5G , 11D , 17D–F , Map 1(5).

Holotype (male): Indonesia: Papua, North New Guinea, Mamberamo, Albatros Bivak , (2°17’S, 138°1’E), 1.– 31.v.1926, leg. W. Docters v. Leeuwen, North New Guinea Exped. —depository: Museum Zoologicum Bogoriense, Cibinong ( MBBJ).

Other specimens studied: North New Guinea, Prauwenbivak, (3°15’S, 138°35’E), 1–30.xi.1920, leg. W.C. v. Heurn — 1 female ( MBBJ) .

Remark. The female is assigned conditionally to this species since it had been found nearly half-way between the type localities of H. curvata and H. pallida . Only for the latter species there is one locality in which both, male and female had been collected, although not at the type locality. Since the female from Prauwenbivak does not agree with those of H. pallida , it is likely that it belongs to H. curvata , but the occurrence of additional species of the genus in that area cannot be excluded.

Diagnosis. H. curvata sp. nov. is similar to H. pallida sp. nov. It differs by the shape of the male cerci that have the compressed internal projections subapical instead of apical, of triangular shape instead of band-shaped, and terminating into a single apical spine instead of two apical spines as in most other species of Habetia ; a remnant of the second spine is however still visible as a minute tubercle at the posterior margin of the internal projection. The narrow, compressed ridge at the internal side of the cercus of H. curvata is roundly projecting in about mid-length of cercus while straight throughout in H. pallida . The titillators are very similar to those of H. pallida but have the apical area more strongly widened with markedly bulging proximal margin. In H. curvata , the male subgenital plate has the central disc with narrowing but straight lateral margins, the apical margin less strongly incised but at tip swollen around bases of the long and stout styli while in H. pallida the lateral margins of the subgenital plate are concave in apical area, the apical margin is triangularly incised followed by a short narrow slit in middle and the styli thin and connected on dorsal side of subgenital plate by an elevated crest.

Description. Coloration of face uniformly pale, of general color; mandibles black, only a small area at base light ( Fig. 3D–E ). Femora with the following number of spines on ventral margins: (1) a 6–7, p 6–8; (2) a 7, p 3; (3) a>10, p>14 (n=1).

Male. Stridulatory file on underside of left tegmen with a distinct step in distal area; with 79 teeth, of which 7 narrow teeth at base, 41 in main part of file, 5 at a step, 15 clearly separated at end, and 11 of decreasing size at end ( Fig. 17F ). Tenth abdominal tergite transverse, nearly parallel-sided; at base wide roundly incised in middle; surface with a medial furrow and with a long narrow apical incision from hind margin through which the epiproct is visible; at both sides of apical incision hind margin faintly slanting mediad. Cerci narrow elongate, faintly curved, behind basal area with an internal carina that forms a small projecting lobe before mid-length of cercus; internal surface, especially behind mid-length excavated with the ventral margin prolonged into a curved-triangular internal process that terminates into one acute spine, the hind margin of that process carries a minute tubercle at about end of basal third; the cercus stem ends into a short cone behind the internal process ( Figs 11D , 17D ). Subgenital plate strongly incised from base to almost mid-length; lateral margin convex in basal, straight in apical area, dorsal-lateral margin partly with laterally expanded rim; apical margin in middle roundly incised; with a pair of rather long styli ( Fig. 11D ). Titillators moderately widened at base that is curved ventro-apicad, then simply band-shaped, from around mid-length apical area curved ventro-apicad and widened to an oval extension that has the proximal margin markedly widened in middle; apical area narrowed and recurved, with obtuse tip. Phallus also provided with a pair of small circular sclerites at top of titillators and with a pair of elongate lateral sclerites ( Fig. 17E ).

Female. Subgenital plate with lateral margins upcurved and approaching each other posteriorly and with a shallow furrow along midline, at end terminating into a pair of narrow spine-like projections, apical margin between bases of projections subtruncate, very faintly projecting in middle; above apical margin and between bases of apical projections with a compressed, upright lamella with faintly bilobate margin ( Fig. 5G ).

Measurements (1 male, 1 female).—Body w/o wings: male 30, female 35; pronotum: male 8.7, female 9.5; tegmen: male 30, female 36; hind femur: male 27, female 27; ovipositor length: female 62 mm.

Etymology. The new species is named for the strongly curved titillators, from Latin curvus, curva = curved.

Figures

FIGURE 3. A, Habetia pilleata sp. nov. male (Wau 1200m); B, H. pallida sp. nov. female (Hollandia); C, H. tuta sp. nov. male (Quelllager); D–F, H. curvata sp. nov. (D, male Albatros Bivak, E–F, female Prauwenbivak); G, H. spada (Brunner, 1898) female holotype (Konstantinhafen); H, H. multispinulosa Griffini, 1908 female holotype (Dilo); I, H. pedala sp. nov. female (Toricelli Mountains).—Frons (A–E, G–I), female dorsal view (F). Scales 5 mm (A–E, G–I), 10 mm (F).

FIGURE 5. Female subgenital plate of Habetia species in oblique ventral (A, J), ventral (C, E, G, L), apico-ventral (B, D, G, K), apical (H), and lateral (F, I) view.—A, H. spada holotype; B–C, H. multispinulosa (B holotype, C from Dorom), D, H. pedala sp. nov. (Toricelli Mts); E–F, H. tuta sp. nov. (Keram river); G, H. curvata sp. nov. (Prauwenbivak); H–L, H. pallida sp. nov. (H–I Jutefa Bay, J Bewani, K Ifar, L Hollandia).—Scales 1 mm; A, D, G not to scale.

FIGURE 11. Male subgenital plate and cerci of Habetia species in ventral view (J in ventro-apical view).—A, H. tuta sp. nov. (Rosensee); B, H. pallida sp. nov. (Ifar); C, H. pedala sp. nov. (Toricelli Mts); D, H. curvata sp. nov. (Albatros Bivak); E, H. imitatrix Karny, 1912 holotype (Bongu); F, H. dentata sp. nov. (Saidor); G, H. bivittata sp. nov. (Goroka); H, H. simbai sp. nov. (Simbai Valley); I, H. kondiu sp. nov. (Kondiu); J, H. lalibu sp. nov. (Lalibu); K, H. wau sp. nov. (Nami Creek). Scales 5 mm (A–E), 1 mm (F–K).

FIGURE17.A–C, Habetiapallidasp. nov.holotype (Bernhard Camp);D–F,Habetiacurvata sp.nov. holotype(Mamberamo).— Male tenth abdominal tergite and cerci in dorsal view (A, D); titillators of male phallus in apical view, the lateral sclerites are drawn only at one side each (B, E); stridulatory file on underside of left tegmen (C, F). All scales 1 mm.