Processuridia oreas Volynkin, 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 : 47

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

Figs 6, 7 , 16 , 21

Type material. Holotype: male ( Figs 6 , 16 ), “N-Vietnam 16–1800 m Mt. Fan-si-pan (West) Cha-pa, Sek. Wald [secondary forest] (22.20°N 103.40°E) 10.–30. X. 1994 leg. Sinjaev [recte: Sinyaev] & einh. Saml [local collectors]”, genitalia preparation Nr. 31421 ( MWM / ZSM) . Paratypes: 3 females, “ 28. V. 2021, Banyan Village , Gulinqing Town, Maguan County, Wenshan Zhuang & Miao Autonomous Prefecture, Yunnan Province, China, leg. Xiang-jin Liu ” [in Chinese], voucher number LTS4, genitalia dissection number MG1 ( CHSY) .

Diagnosis. The forewing length is 9.7 mm in the holotype male and 8.0– 8.8 mm in females (n=3). Superficially, P. oreas sp. n. can be distinguished from P. thangka sp. n. by the forewing with a less outwards-protruding antemedial line in male, the more restricted reddish patterns above the dorsum and the thicker and shorter lengthwise streaks in the submarginal area. In the male genital capsule, P. oreas sp. n. differs from P. thangka sp. n. in the medially broader uncus, the distally narrower medial costal process, the shorter distal costal process with a well-developed additional dorsal branch, and the smaller distal saccular process. Compared to P. thangka sp. n., the phallus of P. oreas sp. n. is straight (it is medially curved in P. thangka sp. n.), the vesica has smaller subbasal and ventral diverticula, and the cornuti are smaller and shorter and forming a transverse band on the medial diverticulum. In the female genitalia, P. oreas sp. n. can be distinguished from P. thangka sp. n. by the markedly broader and deeper notch between the lobes of the antevaginal plate which are much smaller and narrower and have a smooth surface, the shorter and broader ductus bursae and the larger and broader appendix bursae.

Distribution. Only known from Mt. Fansipan in northern Vietnam and Maguan County in southeastern Yunnan, southwestern China.

Etymology. Oreas is a Latin transliteration of the romanized Ancient Greek word Ὀρειάς. In the Ancient Greek mythology, Oread (Oreas) is a mountain nymph, so the specific epithet refers to the mountain habitats of the new species. The name is a noun in apposition.

Remarks. Although the female paratypes are generally smaller than the male holotype, they have nearly identical forewing pattern (all having restricted reddish pattern above the dorsum and stout lengthwise strokes) and constantly differ from that of P. thangka sp. n. mentioned above. Taking into account that no other similar species and no geographic barrier were found in this area, here we consider these female specimens conspecific.

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.