Holochlora bulbosa 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 : 458-460

Holochlora bulbosa Tan, Liu & Ingrisch , sp. nov.

( Figs 9D–F , 10D–F , 11C, 11D , 12B , 13A , 14 , 15 )

Material examined. EAST MALAYSIA: Sabah State • ♂ holotype; Mount Trus Madi, Trusmadi Entomology Camp ; N5.44174, E116.45074, 1189.0± 5.2 m.a.s.l.; 31 October 2023, 19h58–20h23; attracted to light trap at ridge; coll. M.K. Tan, J.L. Yukang & A.Y.C. Chung; SBH.23.27 ( FRC)

Etymology. The species name refers to the characteristic bulbous male tenth abdominal tergite.

Diagnosis. The new species is characterised by the combination of the following male characters: tenth abdominal tergite forming a large bulbous plate; in dorsal view trapezoidal, densely setose; laterally curved ventrad. Cercus at basal third strongly curved inward; thereafter long, cylindrical and slender; at apical end hooked, with the apex tooth-like. Subgenital plate basally broad, narrowing strongly at basal third into a narrow shaft with its lateral margins parallel; in lateral view curved dorsad; at apical end with two lateral lobes, roundly emarginated between the lobes. Styli cylindrical, shorter than apical lobes; with apices rounded.

Description. Habitus typical for genus; relatively large and robust in size ( Figs 13A , 14 ); head, pronotum, tegmina and legs when alive generally dark green, with head and pronotum having tint of blue, yellow when preserved ( Figs 9D, 9E , 14 ). Eyes in dorsal view globular and slightly protruding anteriorly; in frontal view slightly longer ( Figs 9E, 9F ). Frontal rostrum strongly raised, stout, with rounded apex and having median sulcus very deep ( Fig. 9E ). Antennal scapus and segments with a tint of red ( Fig. 9F ). Face and mouthparts generally light coloured, median ocellus large and pyriform ( Fig. 9F ). Pronotal disc with anterior margin straight and white ( Figs 9E ), posterior margin faintly convex ( Fig. 9E ); pronzona 1.6 times longer than metazona. Pronotal lobe 1.2 times taller than long; anterior margin white ( Fig. 14 ); ventral margin short and straight ( Fig. 9D ). Tegmen rather broad, unicolourous green ( Fig. 13A ). Fore and mid legs generally light brown; mid femur in basal half with a tint of green, middle tibia at basal third white ( Fig. 14 ). Fore tibia with inner tympanum conchate, well swollen, with narrow slit open ( Fig. 10D ); with outer tympanum large and bean-shaped ( Fig. 10E ). Hind femur green with genicular area dark brown, external lobes bispinose, margin black, dorsal spine subacute, ventral spine acute ( Fig. 10F ). Hind tibia grey with spines dark ( Fig. 14 ).

Male. Left tegmen with vein 1A swollen, typical for genus, somewhat rectangular but at anal end slightly narrower ( Fig. 11C ); right tegmen with vein 1A mostly straight with basal end curved and mirror trapezoidal ( Fig. 11D ). Stridulatory file on left tegmen stout, typical for genus; straight with ca. 38 equally-spaced teeth, progressively smaller in size towards anal end ( Fig. 12B ). Abdominal apex as shown in Fig. 15 : tenth abdominal tergite forming large bulbous plate; in dorsal view trapezoidal, densely setose; laterally curved ventrad. Cercus with basal third strongly curved inward; thereafter long, slender and slightly curved; at apical end hooked, with apex tooth-like. Subgenital plate broad basally, narrowing strongly at basal third into narrow shaft with lateral margins parallel; in lateral view curved dorsad; at apical end slightly widening into two lateral lobes, roundly emarginated between lobes. Styli cylindrical, slightly shorter than apical lobes; with apices rounded.

Female. Unknown.

Measurements (♂ holotype, in mm). BL = 26.9; BWL = 58.2; PL = 6.8; PW = 4.6; TL = 47.8; TW = 10.5; HWT = 4.8; HFL = 30.1; HFW = 3.7; HTL = 32.7.

Ecology. This species was attracted to light. It is probably an arboreal species.

Distribution. Borneo (Mount Trus Madi in Sabah)

Type locality. EAST MALAYSIA: Sabah: Mount Trus Madi

Figures

FIGURE 9. Holochlora annulicornis Karny, 1926 (A–C), Holochlora bulbosa Tan, Liu & Ingrisch, sp. nov. (D–F), Holochlora falcata Tan, Liu & Ingrisch, sp. nov. (G–I), Holochlora bispinosa Tan, Liu & Ingrisch, sp. nov. (J–L) and Holochlora cratera Tan, Liu & Ingrisch, sp. nov. (M–O) head and pronotum in lateral (A, D, G, J, M) and dorsal (B, E, H, K, N) views; face in anterior view (C, F, I, L, O). Scale bars: 5 mm (all except C, F, I, L, O); 2 mm (C, F, I, L, O).

FIGURE 10. Holochlora annulicornis Karny, 1926 (A–C), Holochlora bulbosa Tan, Liu & Ingrisch, sp. nov. (D–F), Holochlora falcata Tan, Liu & Ingrisch, sp. nov. (G–I), Holochlora bispinosa Tan, Liu & Ingrisch, sp. nov. (J, K) and Holochlora cratera Tan, Liu & Ingrisch, sp. nov. (L–N) inner tympanum (A, D, G, J, L) and outer tympanum (B, E, H, M); hind knee in external view (C, F, I, K, N). Scale bars: 1 mm.

FIGURE 11. Holochlora annulicornis Karny, 1926 (A, B), Holochlora bulbosa Tan, Liu & Ingrisch, sp. nov. (C, D), Holochlora falcata Tan, Liu & Ingrisch, sp. nov. (E, F), Holochlora bispinosa Tan, Liu & Ingrisch, sp. nov. (G, H) and Holochlora cratera Tan, Liu & Ingrisch, sp. nov. (I, J) stridulatory area on the left (A, C, E, G, I) and right (B, D, F, H, J) in dorsal view. Scale bars: 2 mm (C, D), 1 mm (all except C, D).

FIGURE 12. Holochlora annulicornis Karny, 1926 (A), Holochlora bulbosa Tan, Liu & Ingrisch, sp. nov. (B), Holochlora falcata Tan, Liu & Ingrisch, sp. nov. (C), Holochlora bispinosa Tan, Liu & Ingrisch, sp. nov. (D) and Holochlora cratera Tan, Liu & Ingrisch, sp. nov. (E) stridulatory file on the left tegmen in ventral view. Scale bars: 1 mm.

FIGURE 13. Holochlora bulbosa Tan, Liu & Ingrisch, sp. nov. (A), Holochlora falcata Tan, Liu & Ingrisch, sp. nov. (B), Holochlora bispinosa Tan, Liu & Ingrisch, sp. nov. (C) and Holochlora cratera Tan, Liu & Ingrisch, sp. nov. (D) ♂ habitus in lateral view. Scale bars: 1 cm.

FIGURE 14. Holochlora bulbosa Tan, Liu & Ingrisch, sp. nov. ♂ holotype attracted to light at Mount Trus Madi.

FIGURE 15. Holochlora bulbosa Tan, Liu & Ingrisch, sp. nov. ♂ holotype: abdominal apex in dorsal (A) and lateral (B) views; subgenital plate in ventral view (C). Scale bars: 2 mm.