Tolpia ysbaei, Han & Kononenko, 2023

Han, Hui Lin & Kononenko, Vladimir S., 2023, A review of the genus Tolpia Walker, 1863 in East Asia with descriptions of five new species (Lepidoptera, Erebidae, Hypenodinae, Micronoctuini). Taxonomic study of Micronoctuini. Contribution VII, Zootaxa 5227 (5), pp. 549-567 : 551

Tolpia ysbaei sp. n.

( Figs. 2 , 44 )

Type material. Holotype: female, Cambodia, Prov. Mondul Kiri, Seima Biodiversity Conservation Area , 1–3.vii. 2011, Y.S. Bae et al., genit. prep. HHL-3673-2, coll. NEFU . Paratype: 1 female, same data as holotype, genit. prep. HHL-3673-2s (in tube) .

Diagnosis. This species is superficially similar to T. odor Fibiger, 2007 ( Fig. 1 ), but can be distinguished by the following suite of characters: The head and thorax are yellowish grey; the abdomen is dark grey (in T. odor the head, thorax and abdomen are black, or brown); the forewing is rather narrower than in T. odor ; the basal line appears as a small black dot on the costal margin above the cell (in T. odor the basal line is very thin); the antemedial line is indistinct, smoothly curved, only presenting as a small black dot on the costal margin (in T. odor it is distinct, black, broad and waved); the postmedial line is brown, smoothly curved, and presents as a black dot on the costal margin (in T. odor it is dark brown, slightly waved, with big prominent black costal mark); the subterminal line is light grey (in T. odor it is greyish black); the hindwing is grey, veins faint but visible (in T. odor it is dark brown, veins are not visible). In the female genitalia: 7 th abdominal segment bears an inverted triangular sclerotized extension (in T. odor ( Fig. 43 ) it bears an irregular, triangular extension, rather larger and thick); the antrum is long, tube-shaped (in T. odor it is short, tapered, heavily sclerotized); the ductus bursae is membranous, long, rather straight, ostium and 5/3X as long as corpus bursae (in T. odor it is membranous, long, coiling by antrum; the ostium and ductus bursae 2X as long as corpus bursae); the corpus bursae is drop-shaped.

Description. Adult ( Fig. 2 ). Wingspan 15.0 mm. Head and thorax yellowish grey, mixed with yellow scales on patagium; abdomen dark grey, mixed with yellow. Forewing grey to yellowish grey; basal line presenting as black dot on costal margin; antemedial line indistinct, smoothly curved, presenting only as small black dot on costal margin; median line absent; postmedial line brown, smoothly curved, only distinct as black dot on costal area; subterminal line light grey, slender, waved, incurved from costal margin to vein M2, then slightly waved, oblique interiorly to anal angle; terminal line a row of small black dots; fringe yellowish grey, with light yellowish grey between veins, terminal and subterminal region yellowish grey; reniform spot brown, indistinct. Hindwing grey, mixed with dark grey scales; discal spot darkly tinged; outer margin slightly incurved, with obtuse angle on A2 vein; fringe lighter than ground colour.

Male unknown.

Female genitalia ( Fig. 44 ). The seventh abdominal segment with inverted triangular extension, sclerotized in right side of bottom. Apophysis anterioris slender, 1/3X as long as 7 th abdominal segment. Antrum long, tubelike, slightly sclerotized. Ductus bursae membranous, long, in upper part bended, other part straight; ostium and ductus bursae 5/3X as long as corpus bursae. Corpus bursae drop-shaped, signum cross-shaped, with needle-like longitudinal line 2X as long as transverse line.

Etymology. The species name “ ysbaei ” is dedicated to Prof. Y.S. Bae, a famous East Asian Microlepidoptera specialist who collected many interesting Micronoctuini and Hypenodini in Cambodia and other countries of Southeast Asia.

Distribution. Cambodia (Prov. Mondul Kiri, Seima Biodiversity Conservation Area). The species was collected in the tropical rainforest zone.

Figures

FIGURES 1–8. Tolpia spp., adults. 1. T. odor, Thailand, holotype (after Fibiger 2007); 2. T. ysbaei sp. n., Cambodia, holotype, HHL-3673-2; 3. T. fyani, Vietnam, holotype (after Fibiger 2007); 4. T. qiongensis sp. n., China, holotype, HHL-3624-2; 5. T. sikkimi, China, HHL-3529-1; 6. T. hainanensis, China, holotype (after Fibiger 2010); 7. T. subhainanensis sp. n., China, holotype, HHL-4425-1; 8. T. unguis, China, HHL-3525-1.

FIGURES 41–52. Tolpia spp., male (41) and female (43-51) genitalia. 41. T. knudlarseni, Indonesia, holotype (after Fibiger 2008); 42. T. crispus Malaysia, HHL-3596-1; 43. T. odor, Thailand, holotype (after Fibiger 2007); 44. T. ysbaei sp. n., Cambodia, holotype, genit.prep.HHL-3673-2; 45. T. fyani, Vietnam, holotype (after Fibiger 2007); 46. T.qiongensis sp. n., China, holotype, genit. prep. HHL-3624-2; 47. T. subhainanensis sp. n., China, holotype, genit. prep. HHL-4420-2; 48. T. mons, Indonesia, Java, holotype (after Fibiger 2010); 49. T. peniculus, Indonesia, paratype (after Fibiger 2007); 50. T. alexmadseni, Indonesia (after Fibiger 2007); 51. T. palawani, Philippines, paratype (after Fibiger 2007); 52. T. conscitulana Malaysia, paratype (after Fibiger 2007).