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

description: <i>Habetia wau</i> sp. nov. Figs 2G, 4K, 6D, 7F–G, 9G, 11K, 15D–H, 18G–H, 20G, Map 1(9). <b>Holotype (male):</b> Papua New Guinea: Morobe, Wau, Nami Creek, (7°19’, 146°42’), 8.viii.1968, leg. J. Sedlacek — depository: Bernice B. Bishop Museum, Honolulu (BPBM). <b>Paratypes:</b> Papua New Guinea: same data as holotype— 3 females, 2 males (paratypes, BPBM); same locality as holotype, 15.i.1969, leg. J. Sedlacek — 1 male (BPBM); Morobe, Edie Creek, 11.2 km west of Wau, elev. 1700 m (7°22’S, 146°40’E), 16.vii.1971, leg. J. &amp; M. Sedlacek — 1 female (BPBM); NE Wau, elev. 1600–1700 m (7°17’’S, 146°44’E), 28.xii.1961, leg. J., J.H. &amp; M. Sedlacek — 1 female (BPBM); Wau, elev. 1150–1500 m (7°20’S, 146.45’E), 31.vii.1964, leg. J. Sedlacek — 1 female, 3 males (BPBM); same locality, 25.iii.1966, leg. J.L. Gressitt — 1 female (BPBM); Wau, Mt. Missim, elev. 1400 m (7°10’S, 146°54’E), 24.ix.1964, leg. M. Sedlacek —1 nymph female (BPBM); New Guinea (NE), Morobe district, Wau, Kunai Creek, elev. 1500 m (7°20’S, 146°41’E), 28.–30.v.1963, leg. P. Sganshan — 1 male (BPBM); New Guinea NE, Upper Watut, (6°57’S, 146°21’E), 3.v.1968, leg. J.L. Gressitt — 1 female (BPBM). <b>Diagnosis.</b> Regarding the shapes of the male titillators, <i>H. wau</i> <b>sp. nov.</b> and <i>H. bivittata</i> <b>sp. nov.</b> are closely related species that differ however by the shapes of the male abdominal appendages, details of the titillators, the female ovipositor and subgenital plate and by the absence (<i>H. wau</i>) or presence (<i>H. bivittata</i>) of a pair of black bands on the face. The male tenth abdominal tergite ends into a pair of lobes with simply rounded tip in <i>H. wau</i> while in <i>H. bivittata</i> the apical lobes are narrowed at end and curved distad; the dorsal projection of the male cercus is simply rounded in <i>H. wau</i> but prolonged and with wavy margin in <i>H. bivittata</i>, the internal process of the male cerci is little curved in both species but in <i>H. wau</i> it ends into a pair of about equal apical spines while in <i>H. bivittata</i> into a smaller subapical spine and short apical lobe with a spinule at tip. The basically U-curved male titillators of the genus <i>Habetia</i> are modified by voluminous sub-membranous septa in both species as illustrated in Figs 15D–H for <i>H. wau</i> and Figs 14A–E for <i>H. bivittata</i>. The female subgenital plate of <i>H. wau</i> has the baso-lateral extensions simply rounded and oriented in the same direction as the disc, they are however in some dried specimens shrunk and rolled-up, and the spine-like apical projections of the subgenital plate are shorter and separated by a wider interspace in <i>H. wau</i> (Fig. 6D), while in <i>H. bivittata</i> the baso-lateral extensions are twisted against the central disc and the apical spine-like projections are stouter and longer and separated by a narrower interspace (Fig. 6A–B). The females of both species can be easily separated by the shape of the ovipositor, which has the dorsal margin strongly elevated around mid-length in <i>H. bivittata,</i> but hardly convex, nearly straight in <i>H wau</i>. <b>Description.</b> Coloration of face uniformly pale, of general color, few specimens with remnants of green, thus face might be green when alive; mandibles black or black with brownish spots; antennal scrobae and fastigium frontis partly or fully black or of general color; median ocellus light (Fig. 4K). Femora with the following number of spines on ventral margins: (1) a 4–8, p 5–9; (2) a 3–7, p 2–6; (3) a 7–11, p 5–16 (n=15). Male. Stridulatory file on underside of left tegmen 2.0– 2.1 mm long (mean 2.07) with 78–86 teeth (mean 82) that are at both ends very small and difficult to separate from each other, with 17–22 narrow basal teeth (mean 20) and 27–34 narrow apical teeth (mean 31); counted over the whole file length with 38–43 teeth per 1 mm (mean 39.5); in central 1 mm of file with 29–33 (mean 32) teeth; in central 0.5 mm with 14–15 teeth [n = 5] (Fig. 18G–H). Tenth abdominal tergite almost twice as wide as long (1.7–1.8 times) with lateral margins curved ventrad in basal area; from apical margin deeply incised in middle resulting in a pair of roughly triangular lobes with widely rounded tips. Epiproct with medial furrow and obtuse tip (Fig. 9G). Cerci narrow elongate and in apical area little curved; just before tip with a simple, compressed dorsal projection with nearly rounded, substraight or faintly angular dorsal margin; with an elongate, laterally compressed, and little wavy internal process from internal end of cercus, the process terminates into a pair of short apical teeth of sub-equal size (Fig. 9G). Subgenital plate with basal margin concavely incised; lateral margins convex, basal area strongly projecting dorsad on both sides, upcurved dorsal margin descending to about mid-length and afterward forming a narrow compressed dorsal lamella; ventral disc in entire basal half with concave surface and convex lateral margins that become concave in, and little widening again behind mid-length; in nearly apical half deeply incised from hind margin, leaving only the strengthened lateral margins with a compressed dorsal lamella; at tip with a pair of small styli (Fig. 11K). Titillators compressed throughout; at free base rather wide and little projecting distad; otherwise running dorsad, narrowing and subfused in about mid-length and then separating again; in dorsal area dividing into proximal and distal branches; proximal branches curved ventrad and fused at end to form in proximal view a U-shaped structure with wide margins and a medial furrow; apical branches strongly widened dorso-ventrally and with dorsal margin curved laterad; in ventral view it can be seen that the widened and sclerotized apical branches are connected to the corresponding basal branches in nearly full length to form a large wall; in lateral view with dorsal margin concave and at end little roundly projecting, afterward running ventrad to about same level as bases of titillators; at ventral margin curved distad, forming a narrowing apical projection and end into a rounded tip with serrulate margin and granular surface (Figs 15D–H). Two large lateral sclerites with three-fold lamellae are also present. Female. Subgenital plate at base in central area slightly elevated and with long and upcurved lateral lobes with obtuse tip and nearly flat surface but separated from central plate by a deep and wide furrow; ventral disc with transverse furrow in subbasal area afterward curved anterior-posteriorly with converging lateral margins that terminate into a pair of upcurved cones; apical margin faintly concave between lateral cones (Figs 6D, 7F–G). Ovipositor about as long as body; behind basal constriction straight (Fig. 2G). Measurements (8 males, 8 females).—Body w/wings: male 35.0–36.5, female 36–41; body w/o wings: male 23–28, female 21–29; pronotum: male 7–8, female 7.0–8.5; tegmen: male 25–27, female 26–31; hind femur: male 18–20, female 18–22; antenna: male 85; ovipositor length: female 19.0–23.5; ovipositor height: female 2.0– 2.3 mm.
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 228-238, DOI: 10.11646/zootaxa.5020.2.1, http://zenodo.org/record/5223173