Parapsestis naxii, Zhuang & Yago & Owada & Wang, 2017

Zhuang, Hailing, Yago, Masaya, Owada, Mamoru & Wang, Min, 2017, Taxonomic review of the moth family Thyatiridae (Lepidoptera) from Yunnan province, China, Zootaxa 4306 (4), pp. 451-477 : 461-462

Parapsestis naxii sp. n.

( Figs 31 , 40 , 73 , 82 )

Type material. Holotype: male, 18. VII. 2013, alt. 2,160 m, Weixi , Yunnan, China, leg. Min Wang, slide No. SCAU-Thy040. Paratypes: 1 male, 24. VII. 2013, alt . 2,160 m, Weixi , Yunnan, China, leg. Zhenfu Huang, slide No. SCAU-Thy041. 1 female, 13. VII. 2013, alt . 2,430 m, Weixi , Yunnan, China, leg. Hailing Zhuang, slide No. SCAU-Thy042. 1 female, 19. VII. 2013, alt . 2,760 m, Weixi , Yunnan, China, leg. Hailing Zhuang, slide No. SCAU-Thy043. 1 female, 12. VII. 2015, alt . 2,680 m, Weixi , Yunnan, China, leg. Qitong Huang, slide No. SCAU- Thy 044, DNA material No. B 008, genBank accession numbers: KY974320 .

Diagnosis. Forewing with darker black ground color with sporadical white patterns, postmedial line indistinct, conspicuous black dots on veins arranged into crosslines.

Description. Male and female adults: Small-sized, wingspan 38–39 mm, length of forewing 16–17 mm. Head hairy, eyes large and naked, frons with white hairy tuft, palpi, collar and metathorax all with white-black hairs. Antenna lamellate, brown, white-black scales at lateral. Abdomen slender, dark, covered with short hairs. Forewing relatively short and broad, usually black ground color with sporadical white patterns, less apex pointed, outer margin evenly arcuate with white-black scales. Forewings without obvious partition, just indistinctly pale postmedial band, costa with some white patterns in order, reniform spot and orbicular spot reduce. Antemedial area with clear white pattern. Hindwings pale-white, pale scales mainly in the outside, inside with white scales. These external characteristics are also appropriate for female.

Male genitalia: Uncus short, apically round. Socii long with a fine terminal hook, and far from the base of uncus. Tegumen broad and well-developed. Fultura superior belt-shaped, light sclerotized, broader at the lower part. Valva relatively broad, with almost parallel margins, cucullus with apically round, smooth, saccular part sclerotized and with spinulate extensions. Fultura inferior arch. Aedeagus medium-long, simple, carina with a hook, cornuti field easily removable and consisted of fine cornuti.

Female genitalia: The whole of female genitalia is simple, typical thyatirid-like. Papillae anales sclerotized, simple, with long apophyses posteriors. Eighth abdominal segment sclerotized with longer apophyses anteriores. Ostium bursae with two symmetrical sclerotized plates. Ostial part, ductus bursae and corpus bursae membranous, signum single, long bar-shaped.

Distribution. China (Yunnan).

Etymology. The specific epithet is derived from Naxi referring to the minority ethnic groups living in the northwest of Yunnan and the southwest of Sichuan.

Remarks. The genitalia of the genus Parapsestis are generally difficult to identify one from the other, especially in the P. argenteopicta species-group. However, they are easily distinguishable from each other in the pattern of forewings. Although this new species seemed to be P. argenteopicta or P. dabashana when it was first examined. The new species is very similar to P. argenteopicta in appearance, but differs from the latter as follows: valva broader, sacculus more widely expanded, cucullus more sharply pointed, carinal hook of aedeagus slightly curved, and ostium bursae of female genitalia with larger ventro-lateral plates on both sides. On the other hand, compared with P. dabashana , the new species has blacker forewings and obscure white spots on veins, broader valva, especially on the terminal of valva broader than P. dabashana . We also extracted DNA bar codes (CO1) of P. naxii sp. n. and P. argenteopicta , within the two species Kimura two parameter (K2P) distances and P-distance were 5.0% and 4.80% respectively. Lacking fresh specimen of P. dabashana , it is difficult to provide relatively well-trusted DNA evidence, so in this paper we tentatively describe these darker specimens as new species based on morphological characteristics in above text.

Figures

FIGURES 15 – 31. Male adults of Thyatiridae from Yunnan, upperside. 15. Euparyphasma obscura (Sick, 1941); 16. Neotogaria hoenei (Sick, 1941); 17. Horipsestis aenea minor (Sick, 1941); 18. Horipsestis kisvaczak László, Ronkay, Ronkay & Witt, 2007; 19. Horipsestis minutus (Forbes, 1936); 20. Isopsestis poculiformis Zhuang, Owada & Wang, 2015; 21. Psidopala opalescens (Alphéraky, 1897); 22. Psidopala ornata (Leech, 1900); 23. Habrosyne dentata Werny, 1966; 24. Habrosyne intermedia conscripta Warren, 1912; 25. Habrosyne indica indica Moore, 1867; 26. Habrosyne violacea argenteipuncta Hampson, [1893]; 27. Hiroshia albinigra László, Ronkay & Ronkay, 2001; 28. Parapsestis argenteopicta nepalina László, Ronkay, Ronkay & Witt, 2007; 29. Parapsestis lichenea splendida László, Ronkay, Ronkay & Witt, 2007; 30. Parapsestis pseudomaculata (Houlbert, 1921); 31. Parapsestis naxii sp. n., holotype.

FIGURES 32 – 42. Adults of Thyatiridae from Yunnan, upperside. 32. Parapsestis tachengensis sp. n., holotype, male; 33. Parapsestis tomponis almasderes László, Ronkay, Ronkay & Witt, 2007, male; 34. Paragnorima fuscescens Hampson, [1893], male; 35. Gaurena margaritha Werny, 1966, female; 36. Macrothyatira fasciata (Houlbert, 1921), female; 37. Isopsestis meyi László, Ronkay, Ronkay & Witt, 2007, female; 38. Psidopala undulans (Hampson, [1893]), female; 39. Mimopsestis basalis sinensis László, Ronkay, Ronkay & Witt, 2007, female; 40. Parapsestis naxii sp. n., paratype, female; 41. Parapsestis tachengensis sp. n., paratype, female; 42. Betapsestis brevis (Leech, 1900), female.

FIGURES 73 – 79. Genitalia of Thyatiridae from Yunnan. 82 – 85. Male (left: posterior view; right: phallus, lateral view). 77, 78, 79. Female, ventral view. 73. Parapsestis naxii sp. n., holotype; 74. Parapsestis tachengensis sp. n., holotype; 75. Parapsestis tomponis almasderes László, Ronkay, Ronkay & Witt, 2007; 76. Paragnorima fuscescens Hampson, [1893]; 77. Gaurena margaritha Werny, 1966; 78. Macrothyatira fasciata (Houlbert, 1921); 79. Isopsestis meyi László, Ronkay, Ronkay & Witt, 2007.

FIGURES 80 – 84. Female genitalia of Thyatiridae from Yunnan, ventral view. 80. Psidopala undulans (Hampson, [1893]); 81. Mimopsestis basalis sinensis László, Ronkay, Ronkay & Witt, 2007; 82. Parapsestis naxii sp. n., paratype; 83. Parapsestis tachengensis sp. n., paratype; 84. Betapsestis brevis (Leech, 1900).