Glennagraecia curvata Ingrisch 2023, sp. nov.
Creators: name: Ingrisch, Sigfrid
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tettigoniidae
Glennagraecia
Glennagraecia curvata

description: Glennagraecia curvata sp. nov.
Fig. 9
Holotype (male): Papua New Guinea: Morobe, Wau, Mt. Kaindi, elev. 1230 m (7°21’0’’S 146°40’59.88’’E), 30.viii.1981, coll. G.K. Morris —depository: Leiden (NBC).
Paratype (female): same data as holotype (Leiden, NBC).
Diagnosis. As described under genus.
Description. Rather small species with strongly reduced tegmina, in male reduced to stridulatory apparatus, in female to scales; face about oval with subsmooth surface; fastigium verticis conical, not very long; vertex with irregular furrows; pronotum prolonged in male with rounded hind margin, in female of normal length with subtruncate hind margin; disc with transverse furrows indistinct; lateral lobes rather low, ventral margin in anterior area concave, followed by a projecting rounded lobe, in male in about mid-length of pronotum, in female behind it (Figs. 9A, D). Prosternal spines absent in male, minute in female. Femora with the following number of spines on ventral margins: fore femur 3–5 anterior, 4–5 posterior; mid femur 4–6 anterior, 0–2 posterior near base; hind femur 5–6 anterior, 0–2 posterior. Hind knee lobes with one spine on both sides.
Male. Fastigium verticis before eyes 0.8 mm; fastigium verticis from base 1.0 mm; dorsal eye length 0.9 mm; greatest diameter of eye 0.9 mm; index fastigium verticis from base: eye length 1.1; index fastigium verticis from base: greatest eye diameter 1.1. Stridulatory file slightly curved in basal and apical areas; teeth narrow and moderately dense, near apex indistinct: total file length 1.23 mm with 89 teeth; area with large teeth 0.77 mm with 50 teeth (Fig. 9E); mirror oval; 1.5 mm long 1.1 mm wide; index length: width 1.3. Tenth abdominal tergite rather wide and short; apical margin on both sides faintly convex, in middle widely concave (Fig. 9C). Cerci at very base rather wide and conical, afterward laterally compressed with convex external and flattened or slightly concave internal surface that is nearly re-curved around mid-length, in apical area little widening to a roughly oval area carrying four stout spines along dorsal margin, followed by the obtuse tip; convex external surface of apical area with three rows of smaller spines (Fig. 9F). Subgenital plate with convex lateral margins; central disc with obtuse, nearly parallel, and straight lateral margins; apical margin rounded-angularly excised, provided with a pair of narrow styli. Phallus with titillators compressed, probably folded when at rest, curved laterally when opened; apical area widened, about oval with streaky-haired surface; at ventral-distal side with a widened rim, carrying a few compressed projecting pads; near apical area, separated by membrane, with a pair of about oval sclerites having the surface curved lateral (Figs. 9G–H).
Female subgenital plate complex (Fig. 9B): central disc with convex surface, anterior margin angularly excised, in about basal half with a narrow furrow, apical area divided into a pair of obtuse lobes, angularly excised in between; proximo-lateral margins of disc concavely excised with concave lateral surface forming a small obtuse cone at tip; from both of the concave basal-lateral areas and connected by a membranous zone with a huge expansion with three lateral angles separating 3 surfaces: proximal surface obtuse and faintly convex, distal anterior and posterior surfaces between lateral angles strongly concave (but might be collapsed in the dried specimen) with a medial furrow. Ovipositor stout; dorsal margin concave in about basal half, straight in about apical half; ventral margin curved throughout; tip sub-acute (Fig. 9A).
Coloration of dried specimens uniformly light yellowish brown with a black spot at face and with a black band along midline of abdominal tergites that is angularly widening laterally in about middle of each tergite and narrowing towards both ends of each tergite; antennae with wide and little conspicuous black annulation; fore and mid tibiae with 4–5 black spots on anterior and lateral surfaces; in male also dorsal surface of penultimate segment of fore and mid tarsi black.
Measurements (1 male, 1 female).—body: male 20, female 17.5; pronotum: male 8, female 6.5; tegmen: male 2.6; hind femur: male 12.9, female 12 mm; ovipositor female 12.0 mm.
Etymology. The new species is named for the shape of the strongly curved male cerci.
description: Published as part of Ingrisch, Sigfrid, 2023, New and little-known genera and species of Agraeciini (Orthoptera: Tettigoniidae: Conocephalinae) from New Guinea, pp. 190-212 in Zootaxa 5249 (2) on pages 207-209, DOI: 10.11646/zootaxa.5249.2.2, http://zenodo.org/record/7687190