Varitrella (Cantotrella) manukan 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 : 550-551

Varitrella (Cantotrella) manukan Gorochov , sp. nov.

( Figs 9 , 19 , 53–58 )

Material examined. Holotype (male): Malaysia, Sabah State (Borneo), about 5 km to NWW from Kota-Kinabalu City, small Manukan Island, sea level, secondary forest, on leaf of bush at night, 24–25 April 2013, A. Gorochov, M. Berezin, V. Gorochova, E. Tkatsheva ( ZIN).

Paratype (female): same data as for holotype ( ZIN).

Description. Male (holotype). Size of body almost as in V. sukau . Coloration yellowish (very light) with following marks: head with light grey area behind ocelli (near them), a pair of brownish longitudinal stripes behind eyes, very sparse dark and darkish dots on dorsum and maxillary palpi, and rather sparse small brown spots on antennae; pronotum with sparse dark dots and small spots on disc and lateral lobes, and with slightly darkened (almost indistinct) stripe on each lateral lobe along its dorsal edge; tegmina almost transparent but with rather numerous and diverse dark spots as well as with darkish dots and short stripes; abdomen with light brown dorsum of majority of tergites. Head with somewhat more angularly projected rostrum (in profile) than in previous congeners; scape approximately 2.1 times as wide as rostral apex; pronotum distinctly narrowing to head and with obtusely angulate posterior edge of disc ( Fig. 9 ); tegmina and legs typical of this subgenus, but with apical area of dorsal tegminal field moderately long ( Fig. 19 ); anal plate without distinct central membranous area but with rather long and shallow median (almost groove-like) concavity; genital plate as in previous congeners; genitalia with epiphallus similar in shape to that of second and third species groups of Cantotrella (its dorsal spines situated almost at apex of epiphallus, and rest of epiphallus lacking denticulate parts), without visible ectoparameres (possibly they strongly reduced and looking as membranous fold-like lobes similar to those of V. conspersa and V. depressa but lacking sclerotized areas), and with long rachis almost not widened distally and having virga-like median spine ( Figs 53–55 ).

Female. General appearance as in male, but head dorsum with several light grey areas situated between ocelli and posterior edge of head, dorsal tegminal field yellowish (semitransparent) with sparse small dark marks along lateral edge as well as very sparse darkish dots on proximal part and more numerous short darkish stripes on distal half, venation of this field with 11 more or less oblique longitudinal veins and numerous and somewhat irregular crossveins, lateral tegminal field with 8–9 branches on Sc and slightly sparser and more regular (but less distinct) crossveins. Genital plate similar to that of V. robusta but with somewhat wider both distal part of this plate and its posteromedian notch; ovipositor much shorter than in latter species (hind femur approximately 1.3 times as long as ovipositor) and with drilling apex ( Figs 56–58 ).

Length in mm. Body: male 15, female 17; body with wings: male 27, female 33; pronotum: male 2.7, female 3.2; tegmina: male 18, female 23; hind femora: male 12.5, female 14.5; ovipositor 11.

Comparison. The new species possibly belongs to the second species group of Cantotrella, as it has similarly reduced ectoparameres in the male genitalia. This species is distinguished from all the other species of the second group by the absence of sclerotized areas in the inner surface of these membranous ectoparameres, and from all the other congeners by membranous ectoparameres in combination with a characteristic structure of the epiphallus.

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 16 – 19. Left and right male tegmina: 16, 17, Varitrella robusta sp. nov.; 18, V. s uk a u sp. nov.; 19, V. m a nu k a n sp. nov.

FIGURES 44 – 58. Varitrella: 44 – 52, V. robusta sp. nov. (44 – 46, holotype); 53 – 58, V. manukan sp. nov. Male genitalia from above (44, 47, 53), from below (45, 48, 54) and from side (46, 49, 55); left half of distal part of ovipositor from above (50, 57), from below (51, 58) and from side (52, 56).