Trelleora Gorochov, 1988

Meena, Ashok Kumar, Swaminathan, Rajamani & Nagar, Rajendra, 2020, Notes on some lesser known crickets of the tribe Podoscirtini (Podoscirtinae: Gryllidae: Orthoptera) from India, Zootaxa 4821 (1), pp. 49-70 : 50

Genus Trelleora Gorochov, 1988

Trelleora Gorochov, 1988: 14 ; Otte, 1994: 81; Yin & Liu, 1995: 106; Ingrisch, 1997: 49; Gorochov, 2003: 270.

Type species: Trelleora kryzhanovskiji Gorochov, 1988 .

Diagnosis ( Gorochov, 2003): Body of small to medium size, brownish in colour; head more or less equal to anterior margin of pronotum, rostrum on head between the antennal cavities hardly narrower than scape, ocelli projecting. Pronotum distinctly widened at the posterior with lateral margins roundly bent into paranota, male tegmina with a large longitudinal mirror and long apical area, metanotal gland well-developed. Fore tibiae inner tympanum with a slit-like opening and outer tympanum oval in shape. Male supra anal plate short and rather simple; subgenital plate with apex narrowly rounded. In the male genitalia: the epiphallus is horseshoe-shaped, distinct membranous lobes are present between the lateral epiphallic lobes, ectoparameres are well developed and articulated with base of guiding rod, this base is almost fused with the mold of spermatophore attachment plate, this mold has more or less short apodeme, endoparameral apodemes are moderately long.

Composition: the generic name Trelleora was established by A V Gorochov (1988) for the first time with Trelleora kryzhanovskiji Gorochov, 1988 as the type species by original designation; including 6 species presently ( Cigliano et al., 2019); however, one more species, Madasumma assamensis Chopard, 1969 (Eastern India) possibly belongs to this group ( Gorochov, 2003). According to Gorochov (2003) there exist two groups in the genus Trelleora on the basis of structures of the male genitalia.

Group I: the long lateral lobes of the epiphallus have small denticles at the apex; large hook-like apical processes are absent; the short guiding rod is without upper processes; and possess comparatively small membranous lobes between the above-mentioned epiphallic lobes.

Species included in this group:

a) Trelleora kryzhanovskiji Gorochov, 1988 (Northern Vietnam and Southern China)

b) T. suthepa Ingrisch, 1997 (Northern Thailand)

c) T. sonlensis Gorochov, 1988 (Northern Vietnam)

Group II: the short lateral lobes of the epiphallus with large hook-like apical processes and without small denticles at apex; the guiding rod with upper processes, which may be very long; and possess large membranous lobes between the epiphallic lobes.

Species included in this group:

a) Trelleora fumosa Gorochov, 1988 (Northern Vietnam)

b) Trelleora consimilis Gorochov, 2003 ( Vietnam and China)

c) Trelleora gravelyi ( Chopard, 1928) (Northern India)

Distribution: Specifically in the Oriental region.