Tolpia subhainanensis, 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 : 553-554

Tolpia subhainanensis sp. n.

( Figs. 7 , 28 , 47 )

Type material. Holotype: male, China, Prov. Hainan, Changjiang, Mt. Bawangling , 13–16.v.2019, H.L. Han, J. Wu & W.J. Li, genit. prep. HHL-4422-1, coll. NEFU . Paratypes: 1 male, Cambodia, Prov. Mondul Kiri, Seima Biodiversity Conservation Area , 2.vii.2011, Y.S. Bae et al., genit. prep. HHL-3527-1, coll. NEFU ; 3 males, 2 females, same data as holotype, genit. prep. HHL-4420-2 (female), HHL-4421-1 (male) coll. NEFU .

Diagnosis. This species is superficially similar to T. hainanensis ( Fig. 6 ), but can be distinguished from it by the following characters: the head is yellowish grey; the thorax is light yellowish grey; the abdomen is dark reddish brown, with small reddish brown crest on first segment (in T. hainanensis the head is fuliginous, the thorax is light brown, and the abdomen is brown, with a black crest); the forewing is broad, light brownish-grey (in T. hainanensis the forewing is narrow, infuscate); the costal margin is smoothly arched (in T. hainanensis the forewing costal margin is rather straight); the antemedial and postmedial lines are yellowish brown (in T. hainanensis they are blackish-brown); the subterminal line is very thin, indistinct (in T. hainanensis the subterminal line is distinct, blackish brown); the hindwing is brown, the veins are not apparent (in T. hainanensis is the hindwing is dark brown, mixed with black, the veins are faint). In the male genitalia the saccus is long, tapering apically (in T. hainanensis ( Fig. 27 ) the saccus is short, rounded apically); the tegumen is broad (in T. hainanensis it is narrow); the fultura superior is fused with the tegumen (in T. hainanensis the fultura superior forms a small, broad-based, triangular process); the clavus is without a setose crest (in T. hainanensis the clavus bears a setose crest); the first process of the costa on the right valva is distant from the second one, triangular-shaped, and the digitus on the left valva is bird-head shaped (in T. hainanensis the first process of the costa on the right valva is close to the second, and finger-shaped, and the digitus on left valva is hat-shaped); the juxta is tongue-like, with a hole for the phallus on the left side (in T. hainanensis the juxta is quadrangular, with a rather indistinct hole for phallus); the coecum is knifeshaped, the phallus is Z-shaped, coiled in terminal half (in T. hainanensis the coecum is cone-shaped, the phallus medially coiled clockwise so as to appear S-shaped).

Description. Adult ( Fig. 7 ). Wingspan 13.5-16.0 mm. Head yellowish grey; thorax light yellowish grey; abdomen dark reddish brown, with small and light reddish-brown crest on second segment; male with long reddish yellow to brownish yellow anal tuft; hind leg with prominent, long scent brush. Forewing broad with light brownish grey, costal margin smoothly arc-shaped; basal line black, only appearent as two dots on costal margin of forewing and costal vein of cell; antemedial line double, strongly curved near costal margin, then slightly waved, and obliquely turned inward, inner border greyish brown, thin, outer border black and broader at costal margin, otherwise yellowish brown and slender; median line absent; postmedial line, double, slightly waved, indistinct, inner border grey, slender, outer border black and broader at costal margin, otherwise yellowish brown and slender; subterminal line indistinct, slightly waved, slightly darker than ground colour; terminal line a row of small, black line; fringe same as ground colour; orbicular spot small and whitish yellow; reniform spot small and ochre. Hindwing brown, darker than forewing, with brownish black on inner margin; discal spot indistinct; fringe same as ground colour.

Male genitalia ( Fig. 28 ). Tegumen extremely long and broad. Vinculum short, V-shaped, tapering at tip. Saccus long. Fultura superior fused with tegumen, with very small triangular process, indistinct on left side. Juxta tongueshaped, sclerotized, with a hole for phallus on the left. Valva broad, asymmetrical, right valva narrower than left; left sacculus broad, cone-shaped, about half length of valva, right sacculus narrower and shorter than left, quadrate; process of sacculus triangular with hairs, left process larger than right one; costal margin thick, sclerotized, longer on left valva than on right; clavus ear-shaped to dolphin head-shaped, without setose crest; ampulla asymmetrical; digitus on right valva bifurcate, its first process distant from the second, triangular-shaped; digitus on left valva tri-furcate, bird head-shaped, apically slightly asymmetrical, rounded, shovel-shaped, larger on right valva than on left, curved, pointed apically; left digitus about 1/4 to 1/7 as long as right one. Phallus sclerotized, with broad knifeshaped coecum, about 1/3 length of entire phallus, Z-shaped at terminus, forming a right angle in ventral view.

Female genitalia ( Fig. 47 ). Ovipositor cone-shaped.Apophysis posterioris thin, as long as apophyses anteriores. Ostium laterally displaced left, slightly sclerotized. Antrum short, heavily sclerotized. Ductus bursae membranous, narrow, slightly curved at posterior part, as long as corpus bursae. Corpus bursae drop-shaped, membranous; signum cross-shaped, its longitudinal line darker and stronger than transverse line.

Etymology. The species name is derived from the name of closely related sister species name “ hainanensis ”.

Distribution. China (Prov. Hainan), 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 25–32. Tolpia spp., male genitalia. 25. T. odor (after Fibiger 2007); 26. T. sikkimi. China, genit. prep. HHL-36-29-1; 27. T. hainanensis, China, holotype (after Fibiger 2007); 28. T. subhainanensis sp. n., China, holotype, genit. prep. HHL-4422- 1; 29. T. unguis, China, genit. prep. HHL-3525-1; 30. T. bhutani, China, genit. prep. HHL-3526-1; 31. T. indiai, India, holotype (after Fibiger 2007); 32. T. paraunguis, China, genit. prep. HHL-2480-1.

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).