Processuridia thangka, Huang & Volynkin & Zhu & Xu & Wang & Fan & Da, 2022

Huang, Si-Yao, Volynkin, Anton V., Zhu, Li-Juan, Xu, Yong-Qiang, Wang, Min, Fan, Xiao- Ling & Da, Wa, 2022, Processuridia, a new genus for two new species from China and Indochina (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Zootaxa 5104 (1), pp. 40-48 : 44-47

Processuridia thangka S.-Y. Huang & Volynkin, sp. n.

Figs 2–5 , 14, 15 , 20

Type material. Holotype: male ( Figs 2 , 14 ), “ 14-VII-2017, 80K, 2150m, LTS2, male” [14.VII.2017, [altitude] 2150 m, 80K ( Bononggong ), Motuo County, Linzhi City, Xizang Autonomous Prefecture, China, leg. Si-yao Huang & Shu-qin Ji / dissection and voucher number LTS2] ( SCAU) . Paratypes: 2 females, same data as holotype ( SCAU) ; 1 male, 1 female, same locality and collector as holotype, 18.VII.2017 ( SCAU) ; 1 female, same locality and collector as holotype, 16.VII.2017 ( SCAU) ; 1 male, 1 female, same locality and collector as holotype, 13.VII.2017, dissection number MT3 (male) and MT4 (female) ( CHSY).

Diagnosis. The forewing length is 9.4–9.7 mm in males (n=3, 9.4 mm in the holotype) and 9.2–9.7 mm in females (n=5). Superficially, Processuridia thangka sp. n. can be distinguished from P. oreas sp. n. by the forewing with a more outwards-protruding antemedial line in male, the more extensive reddish markings above the dorsum and the slenderer lengthwise streaks in the submarginal area. In the male genitalia, P. thangka sp. n. differs from P. oreas sp. n. in the medially narrower uncus, the distally broader medial costal process, the slenderer distal costal process sometimes bearing a tiny additional dorsal process, the larger distal saccular process, the medially curved phallus, and the vesica bearing thicker and longer but fewer cornuti and having larger subbasal and ventral diverticula. In the female genitalia, P. thangka sp. n. can be distinguished from P. oreas sp. n. by the conspicuously narrower and shallower notch between the two lobes of the antevaginal plate, the markedly larger lobes of the antevaginal plate with rugose surface, the longer and narrower ductus bursae, and the shorter and narrower appendix bursae.

Distribution. Only known from Motuo County in southeastern Xizang, southwestern China.

Etymology. The specific epithet thangka refers to a traditional Tibetan Buddhist painting on various materials. The bright color on forewing of the new species is similar to that used for Thangka painting. The name is a noun in apposition.

Remarks. In male genitalia, Processuridia thangka sp. n. varies in the presence ( Fig. 15 , paratype, indicated by an arrow) or absence ( Fig. 14 , holotype) of a tiny dorsal process on the distal costal process and the number of cornuti in the vesica (two in holotype and three in paratype). However, the aforementioned additional dorsal process of the distal costal process in the slide MT3 ( Fig. 15 ) is minute and asymmetric, suggesting that such difference may only due to individual variation. For the difference in the number of the cornuti, since such long and slender cornuti usually have a weak basal junction with vesica compared to shorter and stouter one therefore a cornutus may get detached from the vesica during copulation and left in female’s corpus bursae.

Figures

FIGURES 2–13. Adults of Processuridia spp. and the type species of the genera Asuridia, Disasuridia & Idopterum. Depositories of the specimens: 2, 3 in SCAU; 6, 13 in MWM/ZSM, 4, 5, 7 in CHSY, 8, 9 in NHMUK (©The Trustees of NHMUK), 10 in CAV, 11, 12 in CKC.

FIGURES 14–19. Male genitalia of Processuridia spp. and the type species of the genera Asuridia, Disasuridia & Idopterum. Depositories of the slides: 14, 19 in SCAU; 15 in CHSY, 16 in MWM/ZSM, 17 in NHMUK (©The Trustees of NHMUK), 18 in CAV.

FIGURES 20–24. Female genitalia of Processuridia spp. and the type species of the genera Asuridia, Disasuridia & Idopterum. Depositories of the slides: 20, 21 in CHSY, 22 in NHMUK (©The Trustees of NHMUK), 23 in CAV and 24 in MWM/ZSM.