Varitrella (Cantotrella) amoena 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

publication ID	https://doi.org/ 10.11646/zootaxa.3774.6.3
publication LSID	lsid:zoobank.org:pub:A49D09BA-6134-4488-943C-D78418602AA3
DOI	https://doi.org/10.5281/zenodo.6139063
persistent identifier	https://treatment.plazi.org/id/03CBD073-FFD3-FFC7-498D-99A1FC46F885
treatment provided by	Plazi
scientific name	Varitrella (Cantotrella) amoena Gorochov
status	sp. nov.

Treatment

Varitrella (Cantotrella) amoena Gorochov , sp. nov.

( Figs 8 View FIGURES 2 – 9 , 15 View FIGURES 12 – 15 , 28 View FIGURES 20 – 31 , 67–70 View FIGURES 59 – 70 )

Material examined. Holotype (male): Malaysia, Sabah State (Borneo), Trus Madi Mount, about 1000 m, partly primary / partly secondary forest, at light, 13–25 May 2007, A. Gorochov ( ZIN).

Description. Male (holotype). Size, coloration and external structure of body similar to those of V. striata and V. tawau but with some differences: anterior part of epicranium under rostral apex and under antennal cavities as well as nearest parts of genae darkened; dorsum of head with dark median area strongly narrowing on rostrum and a pair of small blackish spots near eyes (behind lateral ocelli); antennal flagellum and distal part of maxillary palpi more distinctly spotted; eyes with dark brown lower and light brown upper halves; pronotum with dark both median part of disc and upper half of each lateral lobe, and with rather numerous small dark spots on rest of this lobe ( Fig. 8 View FIGURES 2 – 9 ); tegmina light (yellowish grey) with several dark spots in dorsal field (one at base, one near plectrum, one in region of chords, and larger longitudinal spot near lateral edge of apical area), with darkish stripes along medial edge of this field and around diagonal vein, with smaller darkish stripes in some other areas (latter stripes especially numerous in mirror and apical area), and with dark longitudinal band along upper edge of lateral field occupying also upper parts of membranes between Sc branches (this band partly divided into two dark stripes by yellowish humeral stripe and crossed by more or less light veins and veinlets; Fig. 15 View FIGURES 12 – 15 ); legs with darkened most part of tarsi, few darkish longitudinal stripes on outer surface of hind femora, rather dark area in distal part of these femora, and dark both distal half of hind tibiae and ventral surface of rest of these tibiae; scape approximately 1.75 times as wide as rostral apex; pronotum distinctly wider in posterior part (approximately as in V. striata ) and with almost obtusely angulate posterior edge of disc ( Fig. 8 View FIGURES 2 – 9 ); tegmina with apical area of dorsal field very long (somewhat longer than in all previous species) and with venation as in Fig. 15 View FIGURES 12 – 15 ; central membranous area of anal plate distinctly transverse but not divided into a pair of more or less separate areas ( Fig. 28 View FIGURES 20 – 31 ). Genitalia with epiphallus slightly similar to that of all previous species but more curved in profile and without angular notches between dorsal spines and dorsal edges of more distal epiphallic parts (see in profile); ectoparameres well developed, short and strongly curved in middle part; rachis rather long, with long and strongly widened distal part, with a pair of very small and almost spine-like processes on lateral surfaces of this widened part ( Figs 67–69 View FIGURES 59 – 70 ); spermatophore with more or less globular ampulla ( Fig. 70 View FIGURES 59 – 70 ).

Female unknown.

Length in mm. Body 18; body with wings 29; pronotum 3; tegmina 20.5; hind femora 11.5.

Comparison. The new species is most similar to V. mjobergi , described by Chopard (1930) from Sarawak State of Malaysia in Borneo (“Mount Dulit”), in the characteristic epiphallus. However, it is distinguished from V. mjobergi by the absence of a pair of distinct dark longitudinal stripes running dorsally from inner parts of the eyes to the head posterior edge, presence of a dark median area on the pronotal disc, a clearly longer apical area of the dorsal tegminal field (this area is not shorter than a space from the stridulatory vein to distal edge of mirror; vs. this area is distinctly shorter than the above-mentioned space), a somewhat shorter and slightly curved (in profile) epiphallus, and a more projected posterior part of the rachis in male genitalia.