Holochlora bulbosa Tan, Liu & Ingrisch 2024, sp. nov.

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