Glennagraecia, Ingrisch, 2023

Ingrisch, Sigfrid, 2023, New and little-known genera and species of Agraeciini (Orthoptera: Tettigoniidae: Conocephalinae) from New Guinea, Zootaxa 5249 (2), pp. 190-212 : 206-207

Glennagraecia gen. nov.

Type species: Glennagraecia curvata sp. nov.

Diagnosis. Small species with prolonged apical area of pronotum and strongly reduced wings: Fore wings in male reduced to stridulatory apparatus, in female reduced to small scales. Pronotum elongate, prolonged behind with convex hind margin almost fully covering the reduced wings; lateral lobes markedly longer than high with little projecting ventral-subapical lobe behind mid-length. Prosternal spines absent or minute. Males are unique for the almost completely re-curved male cerci that have the apical area little widened and carrying rows of small and minute spines ( Fig. 8F ). The titillators have the apical area widened lobate, which is rather common within Agraeciini , but have rather large compressed, widened, and oval lateral sclerites at end ( Figs. 8G–H ). Females are unique for the subgenital plate that consists of a central plate with concave lateral margins in basal and convex lateral margins in apical area; from upper margin of the concave basal area huge lateral expansions with vaulted surface are arising ( Fig. 8B ). The strongly curved male cerci are possibly an adaptation to the large lateral expansions of the female subgenital plate.

Etymology. The new genus is named after the first name of the collector, Glenn K. Morris, who also recorded the stridulation of this and other New Guinean Tettigoniidae species, which shall be published on another occasion.

Figures

FIGURE 8. Kaindiagraecia bilobata sp. nov. male: A, tenth abdominal tergite and cerci in dorsal view with cerci spread sideward; B, end of abdomen in oblique dorso-apical view with overlapping cerci; C, end of abdomen in oblique dorso-lateral view; D, right cercus in dorsal view; E, titillators; F, pronotum and tegmina from above-behind: when at rest, the male tegmina are nearly fully covered by the pronotum.—Scales 1 mm.