Varitrella (Cantotrella) tawau Gorochov

Gorochov, Andrej V. & Tan, Ming Kai, 2014, Species of the subgenus Cantotrella (Orthoptera: Gryllidae: Podoscirtinae: Varitrella) from Singapore, Malaysia and Indonesia, Zootaxa 3774 (6), pp. 535-551 : 549-550

Varitrella (Cantotrella) tawau Gorochov , sp. nov.

( Figs 7 , 14 , 26 , 59–62 )

Material examined. Holotype (male): Malaysia, Sabah State (Borneo), Tawau Hills National Park near Tawau Town, 200–400 m, partly primary / partly secondary forest, on leaf of small tree at night, 14–20 May 2013, A. Gorochov, M. Berezin, E. Tkatsheva ( ZIN).

Description. Male (holotype). Size, coloration and external structure of body very similar to those of V. striata , but dorsum of head with dark brown area behind ocelli (near them), maxillary palpi (especially their distal part) dark, pronotal lateral lobes completely darkened, tegmina with some marks darker ( Figs 7 , 14 ), hind tibiae with more spotted dorsal part, scape approximately 1.8 times as wide as rostral apex, and anal plate with central membranous area almost divided into a pair of smaller ones ( Fig. 26 ). Genitalia with epiphallus similar to that of V. trusmadi , but dorsal epiphallic spines distinctly shorter, space between bases of these spines slightly wider, posteromedian notch of epiphallus slightly deeper, rachis slightly shorter and with clearly longer distal (widened) part, formula short and with very long anterior sclerotized ribbon, and ectoparameres much shorter (very short) and completely membranous (looking as a pair of small lateral membranous lobes with more or less angular apex; Figs 59–61 ); spermatophore ampulla strongly elongate ( Fig. 62 ).

Female unknown.

Length in mm. Body 17; body with wings 27; pronotum 2.8; tegmina 18.5; hind femora 12.

Comparison. The new species differs from all the other representatives of Cantotrella in the male genitalia with very short and membranous ectoparameres lacking any sclerotized area on their inner surface.

Figures

FIGURES 2 – 9. Head and pronotum of male from above: 2, Varitrella orion sp. nov.; 3, V. trusmadi sp. nov.; 4, V. striata sp. nov.; 5, V. ro bu st a sp. nov.; 6, V. suk au sp. nov.; 7. V. tawau sp. nov.; 8, V. amoena sp. nov.; 9, V. manukan sp. nov.

FIGURES 12 – 15. Left and right male tegmina: 12, Varitrella trusmadi sp. nov.; 13, V. striata sp. nov.; 14, V. tawau sp. nov.; 15, V. amoena sp. nov.

FIGURES 20 – 31. Varitrella, male: 20 – 22, V. orion sp. nov., stridulatory vein of right tegmen from below (20), abdominal apex from above (21), and genital plate from below (22); 23 – 28, anal plate partly from above and partly from behind in V. trusmadi sp. nov. (23), V. striata sp. nov. (24), V. robusta sp. nov. (25), V. tawau sp. nov. (26), V. suk au sp. nov. (27) and V. amoena sp. nov. (28); 29 – 31, genitalia of V. palawanensis (29), V. mindoroensis (30) and V. quadrata (31) from side and from below, with names of morphological structures. Abbreviations: ds, dorsal epiphallic spine; ec, ectoparamere; ea, endoparameral apodeme; en, endoparamere; ep, epiphallus; f, formula (= mold of spermatophore attachment plate); lo, lateral lobe of rachis; mr, median sclerotized ribbon fused with formula; r, rachis (= guiding rod); ra, ramus.

FIGURES 59 – 70. Varitrella, male: 59 – 62, V. tawau sp. nov.; 63 – 66, V. su k a u sp. nov.; 67 – 70, V. amoena sp. nov. Genitalia from above (59, 63, 67), from below (60, 64, 68) and from side (61, 65, 69); spermatophore (66, 70) and its ampulla (62) from side.