Teulisna (Poikilothosia) spinulosa Volynkin 2023

Teulisna (Poikilothosia) spinulosa Volynkin, 2023 (Figs 19, 20, 102, 154) Teulisna spinulosa Volynkin, 2023, Ecologica Montenegrina, 68: 128, figs 1–3, 9, 12 (Type locality: “ Vietnam, Prov. Lao Cai, 1900–2000m, Fan-si-pan Mts, 14 km NW of Sa Pa, 22°20.9'N 103°46.06'E ”). Type material examined. Holotype (Figs 19, 102): male, “ Vietnam, Prov. Lao Cai, 1900–2000 m | Fan-si-pan Mts, 14 km NW [of] Sa Pa | 103°46.06'E, 22°20.9'N, 26–29.I.1999 | leg. L. Peregovits, G. & L. Ronkay | coll. Museum Witt ” / “Slide | ZSM Arct. | 2021- 425♂ | A. Volynkin ” (MWM / ZSM). Paratypes. VIETNAM: 5 males, same data as in holotype; 145 males, 2 females, [Lao Cai Prov.] 1600m, Mt. Fan-si-pan (north), Cha-pa, primary forest, 22°17'N 103°44'E, 25–30.III.1995, V. Sinyaev & A. Schintlmeister leg., gen. slide No.: ZSM Arct. 2021 - 427♀ (prepared by Volynkin); 3 males, 1 female, [Tuyen Quang Prov.] Tam Dao (sec.[ondary] forest), 60 km NW Hanoi, 950m, 21°34'N 105°20'E, IV.1995, V. Sinyaev leg., gen. slide Nos.: ZSM Arct. 2021 - 426♂, ZSM Arct. 2021 - 428♀ (prepared by Volynkin) (all in MWM / ZSM). Diagnosis. The forewing length is 13.0–13.5 mm in males and 15.0–16.0 mm in females. Teulisna spinulosa is vaguely reminiscent of the Himalayan T. ganesha but distinguished by the shorter forewing with a more elongate apex, and the costal spot of the forewing situated more distally. The male genitalia of T. spinulosa are fundamentally different from T. ganesha and are most similar to the partly sympatric and externally quite dissimilar T. bipectinis, unlike which T. spinulosa has a thin and distally tapered uncus (it is swollen and posteriorly dilated in the congener), a shorter vinculum, a longer valva with a flattened, broadly triangular and smooth distal saccular process (it is club-shaped and serrulate in T. bipectinis), and a membranous anellus (it bears a broad dense ring-like cluster of minute triangular thorns in the congener). The phallus of T. spinulosa is shorter than in T. bipectinis, has a shorter and less upcurved coecum, and a longer and thinner carinal process. The vesica of T. spinulosa is broad saccate with two broad clusters of ornamentation distally: a dorsal one consisting of short but robust spinules, and a ventral cluster of short spinulose scobination, whereas the vesica of T. bipectinis is narrow tubular with a denser cluster of spinules basally and subbasally. The female genitalia of T. spinulosa can be easily distinguished from T. bipectinis by the shorter ductus bursae, and the broader corpus bursae having a dilated and densely spinulose gelatinous posterior section, and a short, narrow and gelatinous anterior section whereas in T. bipectinis, the posterior section is tubular and lacking the spinules while the anterior section is broader, teardrop-shaped, and membranous with a narrow cluster of scobination along its left wall. Distribution. The species is currently known from Northern Vietnam (Lao Cai and Tuyen Quang Provinces) (Volynkin 2023b).