Ganiagraecia Rentz, Su and Ueshima, 2021

Rentz, Dcf, Su, You Ning & Ueshima, Norihiro, 2021, Studies in Australian Tettigoniidae: New short-winged Agraeciini from Australia (Orthoptera: Tettigoniidae; Conocephalinae; Agraeciini), Zootaxa 5059 (2), pp. 1-72 : 17-18

Ganiagraecia Rentz, Su and Ueshima Gen. et sp. nov.

ANIC Number Gen. Nov. 9

9 Named for the Gani-Gabi indigenous peoples who have special reverence for the Glasshouse Mountains.

Common name. Glasshouse Mountains Katydids

Type species: Ganiagraecia karwinia Rentz, Su & Ueshima , gen. et sp. nov., here designated.

Ganiagraecia Rentz & Su , gen. nov. is proposed for a single spectacular small species that seems restricted to the Glasshouse Mountains of southeast Queensland. The single species is light straw brown in overall colouration except that the caudal half of the pronotum is black and there is a broad longitudinal stripe extending from the pronotum to the tip of the abdomen. Males are macropterous, the tegmina slightly extending beyond the apex of the pronotum; females are wingless. Males have a simple cercus and the phallic complex lacks any trace of sclerotization. Females are slender and have an elongate, straight to feebly upcurved ovipositor that is not armed on either the dorsal or ventral margins.

Ganiagraecia Rentz & Su , Gen. nov. somewhat resembles Australiagraecia in its small size, straw-brown colour and its occurrence on or near the ground. It differs when critical morphological characters such as the habitus of living individuals, the armature of the thorax and the structure of the male cercus are considered.

Generic characters. Male/Female. Male. Head globular, not especially slanting. Antenna thin, about three times the length of the body; scape with a pronounced hook on internal margin, pedicel cylindrical, about ¾ length of scape. Eye ovoid but slightly laterally expanded, positioned high on head; fastigium of vertex narrow, not strongly projecting, with median sulcus. Fore tibia unarmed dorsally, ventral surface with 6 spines on each margin; femur armed ventrally with 3 minute teeth on anterior margin. Middle tibia armed dorsally with 2 slender, minute spines on posterior margin of dorsal surface, posterior margin unarmed, ventral surface armed on both margins with 6 spines; middle femur armed ventral on posterior margin with 0 or 2 minute teeth. Hind femur short, robust, armed on internal margin of ventral surface with 6 or 7 minute teeth; tibia armed on dorsal surface with 2 spurs, somewhat subapical in position, ventral surface with 2 apical spurs. Genicular lobes of fore and middle femora unarmed; hind femur armed or not on internal lobe with a minute spine. Abdomen slender, tenth tergite with soft, membranous median portion; paraprocts not unusually produced. Female very slender, tenth tergite not greatly incised, supraanal plate triangular ( Fig. 9N ); subgenital plate broad than long, with a subapical notch ( Fig. 9O ). Ovipositor very elongate, much longer than hind femur ( Table 2 ).

Colour pale except for a dark median band on pronotum and dark, almost black, caudal half of pronotum; abdomen with a dark median patch beneath, but not extending beyond, tegmina; abdomen immaculate straw brown ( Figs 9 A-B). Female with broad median stripe extending from fastigium of vertex to tenth abdominal tergite, including supra-anal plate or not ( Fig. 9B ). Entire ventral surface straw brown. Entire surface of both sexes with many ovoid brown spots visible only under magnification. Tibial spines dark brown at base, median portion straw brown, apex slightly darker.

Figures

FIG. 9. Ganiagraecia karwinia.A. Adult male. B. Adult female, note dimorphic for pronotal colouration. C. Female head. Note fastigium of vertex. D. Adult female, tubercles of meso- and metathorax. E. Adult female, right hind femur. F.Adult male, frons. G. Adult male, thorax. Note prothoracic spines and tubercles of meso- and metathorax. H. Adult male, tip of abdomen, dorsal view. I. Left male cercus, dorsal view. J. Left male cercus, ventral view. K. Left male tegmen. L. Adult male, head and pronotum. Note fastigium of vertex. M. Adult male subgenital plate, ventral view. N. Adult female, tip of abdomen. Note shape of supraanal plate and shallow median sulcus. O. Adult female subgenital plate.