Deflorita (Separita) extensa Tan, Liu & Ingrisch, 2024

Tan, Ming Kai, Liu, Chunxiang, Ingrisch, Sigfrid, Japir, Razy & Chung, Arthur Y. C., 2024, An account on the Phaneropterinae (Tettigonioidea: Tettigoniidae) from the highlands of western Sabah, Zootaxa 5443 (4), pp. 451-494 : 483-487

Deflorita (Separita) extensa Tan, Liu & Ingrisch , sp. nov.

( Figs 35 , 36 )

Material examined. EAST MALAYSIA: Sabah State • ♂ holotype; Mount Trus Madi, Trusmadi Entomology Camp ; N5.44292, E116.45129, 1189.0± 5.6 m.a.s.l.; 2 November 2023, 20h30; attracted to light at camp; coll. M.K. Tan, J.L. Yukang & A.Y.C. Chung; SBH.23.93 ( FRC)

Etymology. The species name refers to the male tenth abdominal tergite enlarged and extended and forming a plate, as well as the subgenital plate at apical half broadly widened; extensus = extended and widened in Latin.

Diagnosis. This new species can be characterised by a more elongated stridulatory area on the male left tegmen, a large plate-like apical extension of the male tenth abdominal tergite with two distinct spots in the middle, and the apex of its male cercus having an acute apical process pointing externally.

The new species is most similar to Deflorita (Separita) decora ( Gorochov, 2008) and Deflorita (Separita) separata Gorochov, 2023 from Sabah in the shape and colour of the tegmina (including the elongated stridulatory area), but differs by the shape of its male subgenital plate (distinctly widened and strongly emarginated until its basal third, instead of only feebly emarginated at the apical end) and the apex of the male cercus (with the acute flattened tooth pointing externally, instead of slightly bulbous just before its apex and the tooth pointing internally).

Subgenus status. Following Gorochov’s (2023b) revision of the Deflorita and the erection of new genera, we propose that the new species should be placed under the subgenus Separita Gorochov, 2023 considering these characters: pronotal disc with its anterior half having a pair of short dark longitudinal stripes along lateral margins; last abdominal tergite with a distinct posterio-median lobe; male subgenital plate with apical lobules directed backwards and slightly upwards, and with lamellar keel around all parts of posterio-median notch.

Description. Habitus typical for genus; generally yellow green with mix of dark, cream-coloured and red patterns on head, pronotum, tegmina and legs when alive ( Fig. 35A ). Head generally yellow green, dorsum in middle cream coloured bordered by black band running from back of head along margin of eye to posterior of scapus, red band running behind eye external of black border line, middle of white patch with red triangular spot; frontal rostrum cream coloured ( Figs 35B–D ). Frontal rostrum conical, stout, strongly carinated with rounded apex of upper tubercle ( Fig. 35B ). Antennal scape and pedicel yellow green with a tint of red ( Figs 35D, 35E ). Eyes large and globular and distinctly protruding laterally ( Figs 35B, 35C ). Mouthparts generally light coloured ( Figs 35C, 35F ). Pronotal disc not covering stridulatory area, anterior margin faintly convex and dark, with two lateral cream-coloured spots one on each side, along lateral carina with dark band that narrows posteriorly, lateral carina in middle reddish or without band; posterior half slightly widened, lateral carina with dark band that is broadest at posterio-lateral angle; posterio-lateral angle broadly rounded, posterior margin faintly convex ( Fig. 35E ). Pronotal lateral lobe mostly yellow green, deep with ventro-posterior angle broadly rounded ( Fig. 35F ). Thoracic auditory spiracle (= thoracic foramen) covered by pronotal lateral lobe and tegmen. Fore tibia with inner tympanum conchate with slit opening wide and faintly curved ( Fig 35G ), external tympanum open and oval ( Fig 35H ). Legs generally pale green; fore and middle femora at apex and knees with a tint of red and black; hind femur in basal half with five red spots on dorso-external surface, knee red and black; hind tibia basally red and black, in middle with broad red (with a tint of black) band, tarsi and apex of tibiae red with a tint of black ( Fig. 35A ).

Male. Tegmen rather broad, infumated yellow green, anterior margin mostly straight, posterior margin slightly sinuous; broadest in apical third, with apex oblique; with numerous irregular dark red brown spots along margins ( Fig. 36A ). Stridulatory area on left and right tegmina elongated; on left tegmen gently tapering posteriorly with a straight vein 1A ( Fig. 36B ); on right tegmen rectangular and with mirror large and oval ( Fig. 36C ). Stridulatory file on left tegmen mostly straight with basal and anal ends slightly curved, with ca. 76 broad and very closely-packed (especially at the basal end) teeth ( Fig. 36D ). Hind wing surpassing tegminal apices, exposed part also infumated yellow green with dark red brown spots along margins, otherwise hyalinous ( Fig. 36C ).

Abdominal apex as in Figs 36E–G . Last abdominal tergite forming large plate-like apical extension pointing ventrad, with two distinct spots near middle, depressed in middle, raised laterally; posterior margin truncated. Epiproct covered by last abdominal apex. Cercus slightly curved, flattened, at apex tapering into hook-like apex curved externally. Subgenital plate with deep V-shaped emargination, strongly curved dorsad with apices of lobules rounded, inner margin of emargination thickened.

Female. Unknown.

Measurements (1♂, in mm). BL = 8.7; BWL = 24.3; PL = 3.3; PW = 2.1; TL = 17.0; TW = 4.5; HWT = 3.9; HFL = 11.0; HFW = 1.3; HTL = 11.2.

Distribution. Borneo (Mount Trus Madi in Sabah)

Type locality. EAST MALAYSIA: Sabah: Mount Trus Madi

Figures

FIGURE 35. Deflorita (Separita) extensa Tan, Liu & Ingrisch, sp. nov. ♂ holotype: habitus in lateral view (A) head in dorsal view (B); face in anterior view (C); head dorsum in dorso-lateral view (D); head and pronotum in dorsal (E) and lateral (F) views; inner (G) and outer (H) tympana. Scale bars: 5 mm (A), 1 mm (B–H).

FIGURE 36. Deflorita (Separita) extensa Tan, Liu & Ingrisch, sp. nov. ♂ holotype: wings in dorsal view (A); stridulatory area on the left (B) and right (C) tegmina in dorsal view; stridulatory file on the left tegmen in ventral view (D); abdominal apex in posterior (E) and dorso-lateral (F) views; subgenital plate in ventral view (G). Scale bars: 5 mm (A), 1 mm (B–G).