Habetia simbai Ingrisch 2021, sp. nov.
Creators: name: Ingrisch, Sigfrid
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tettigoniidae
Habetia
Habetia simbai

description: <i>Habetia simbai</i> sp. nov. Figs 2F, 4H, 6E, 7E, 9H, 11H, 16A–C, 19H, 20F, Map 1(12). <b>Holotype (male):</b> Papua New Guinea: New Guinea NE, Madang district, Simbai Valley, elev. 1750 m (5°16’7’’S, 144°32’35.46’’E), 26.v.1965, leg. J.L. Gressitt —depository: Bernice B. Bishop Museum, Honolulu (BPBM). <b>Other specimens studied</b> (paratypes): same data as holotype— 2 males, 1 female (BPBM). <b>Diagnosis.</b> Males of <i>H. simbai</i> <b>sp. nov.</b> are similar to those of <i>H. lalibu</i> <b>sp. nov.</b> The new species differs by the tenth abdominal tergite that has the apical margin on both sides of the medial incision straight not concave nor with projecting lateral angles; the male cerci have the dorsal apical projections compressed not bulging and the apical internal process is anterior-posteriorly compressed and terminates into a pair of spines while in <i>H. lalibu</i> it is dorso-ventrally compressed and terminates into a pair of tubercles. The shape of the internal process resembles the situation in <i>H. kondiu</i> <b>sp. nov.</b> which has however the dorsal projection running around the apical margin of the cercus, not restricted to the dorsal margin as in <i>H. simbai</i> and the shapes of the tenth abdominal tergite of both species are quite different. The titillators of <i>H. simbai</i> are similar to those in <i>H. lalibu</i> and <i>H. kondiu</i> but differ in having the apical area of the titillators separated by a short sub-membranous area from the central area, which might allow a separate movement of the apical arm (Fig. 16A–C), while the apical arm is either completely separated in <i>H. kondiu</i> or continuous with the central area in <i>H. lalibu</i>. The female subgenital plate of <i>H. simbai</i> is similar to that of <i>H. kondiu</i> but wider and has the anterior lateral angles less strongly extended dorsad, the lateral margins less strongly bulging and the flattened central area hardly instead of markedly depressed; in lateral view the central area appears straight, only upcurved at tip, while in both other species it is gradually curved onto tip. <b>Description.</b> A slender species with narrow tegmina that only slightly surpass the hind knees (Fig. 2F). Coloration of face uniformly pale, of general color, mandibles in more basal and in apical areas black, in between of various shades of medium to dark brown, ventral rim of genae and lateral areas of clypeo-frontal suture of same color; rim of antennal scrobae in lateral and external areas darkened (Fig. 4H). Femora with the following number of spines on ventral margins: (1) a 5–6, p 4–7; (2) a 5–7, p 2–3; (3) a 7–11, p 6–12 (n=4). Male. Stridulatory file on underside of left tegmen 1.54 mm long, with 75 teeth that are at both ends very narrow (12 apical and 16 basal teeth); in middle of file with 47 teeth at 1 mm, or in central 0.5 mm with 22 teeth, n=1 (Fig. 19H). Tenth abdominal tergite wider than long; in basal half with down-curved lateral areas, then with approaching and slightly concave lateral margins, apical margin sub-truncate but little oblique toward middle where it is interrupted by a rounded notch; surface in front of that notch furrowed in midline (Fig. 9H). Epiproct with medial furrow and rounded tip. Cerci moderately long and narrow, towards apical area with flattened of faintly concave internal margin and curved nearly rectangularly mediad into an internal process; curved area with a compressed, roughly semi-circular crest on top; process laterally compressed and with approaching dorsal and ventral margins; at end divided into two short rounded projections; dorsal projection little longer than ventral projection; both with a short acute and faintly downcurved spine at tip (Fig. 9H). Subgenital plate curved along longitudinal axis; base widely incised but faintly projecting in middle; lateral margins little stiffened throughout, approaching from base to about mid-length and then widening again toward strongly incised apical area; styli short, inserted at underside of the narrow apical branches of the subgenital plate (Fig. 11H). Titillators at very base subfused and shortly curved distad with rounded basal margins, afterward compressed, nearly band-shaped and fixed to each other by a narrow transparent septum; at dorsal end on proximal side with rather large, roughly oval compressed projections curved laterad; on distal side with elongate and nearly black, moderately widened and compressed projections with dorsal margin little curved; from the concave ventro-distal surface of these proximal projections and connected to them by a very short membranous area with elongate secondary projections that in internal view appear narrow band-shaped and curved several times, in apico-lateral view widened, ventrally expanded in basal half, afterward narrow and curved twice; that distal pair of projections terminate into rounded, serrulate tips; space between basal and apical posterior projections filled by a transparent, hyaline membrane, leaving only the serrulate tip free (Fig. 16A–C). Female. Subgenital plate consisting of a central plate with posteriorly converging lateral margins and rather simple, moderately up-bent baso-lateral expansions that have the apical area at proximal side little grooved, at distal side slightly swollen; central part with posteriorly approaching lateral margins only little upcurved; ventral surface wide and except for margins shallowly grooved, at end concavely incised and on both sides prolonged into a rather short, little upcurved, and acute spine-like process (Figs 6E, 7E). Ovipositor about as long as body, little longer than hind femur; behind basal constriction dorsal margin convex, but only faintly elevated around mid-length, tip subobtuse (Fig. 2F). Measurements (3 males, 1 female).—Body w/wings: male 35.5–37.0, female 42.0; body w/o wings: male 28.0– 28.5, female 30.0; pronotum: male 7.2–7.5, female 7.5; tegmen: male 26–28, female 31; hind femur: male 22–23, female 24; tegmen width: male 3.5; ovipositor length: female 32.5; ovipositor height: female 2.2 mm. <b>Etymology.</b> The new species is named after the type locality, noun in apposition.
description: Published as part of <i>Ingrisch, Sigfrid, 2021, Revision of the genera Habetia Kirby, 1906 and Parahabetia gen. nov. from New Guinea (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini), pp. 201-256 in Zootaxa 5020 (2)</i> on pages 242-243, DOI: 10.11646/zootaxa.5020.2.1, http://zenodo.org/record/5223173