Tactusa virga Fibiger, new species
| Main Authors: | Fibiger, Michael, Han, Hui-Lin, Kononenko, Vladimir S. |
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| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2011
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6182950 |
Daftar Isi:
- Tactusa virga Fibiger, new species (Figs. 7, 17) Type material. Holotype. Male, China, Yunnan prov, Jinghong, 12–13.ix. 2008, leg. Han, H.L. & Wang, Y., genit. prep. 6221 M. Fibiger, coll. NEFU. Diagnosis. The genus Tactusa is a member of the subfamily Tactusinae, now comprising 30 species, all with apically rounded ampullae and coiled phalli. The genus Tactusa is hereby recorded from China for the first time; it was previously known primarily from SE Asia. T. virga belongs in its own species-group, and differs from all other Tactusa species by the extremely narrow valva; ampulla very narrow, sickle-shaped, almost equally narrow throughout; right digitus spine-like, ventrally directed; base of sacculus with prominent thorn-like process on both sides, ventrally directed; phallus strongly coiled, with pointed apex. Description. Adult (Fig. 7). Wingspan 11.5 mm, forewing narrow. Head, patagia, and base of costa black; ground colour of forewing light brown, with costal-medial black patch, and with subterminal and terminal area black, including fringe; cross-lines absent, except terminal line marked by black intervenal dots; reniform stigma beige, outlined by black. Hindwing unicolourous grey, with discal spot; fringe grey. Ventral surface unicolorous light brown. Male genitalia (Fig. 17). Upper part of tegumen thread-like, ventral part of double width; vinculum of same width; saccus of triple width, short, broadly U-shaped; valvae very narrow, asymmetrical; costa basally with short, triangular flap; base of sacculus with short, apically blunt process; sacculus subbasally with prominent thorn-like process; ampulla narrow, sickle-like; spine-like digitus presents on right side; phallus strongly coiled; coecum relatively long, tapered; carina spine-like; vesica unarmed. Female. Unknown. Bionomics. The biotope comprises mainly subtropical forest vegetation. All specimens were collected at light in mid September. The early stages are unknown. Distribution. (Fig. 30) China (Yunnan prov.).
- Published as part of Fibiger, Michael, Han, Hui-Lin & Kononenko, Vladimir S., 2011, Five new species and one new subspecies of Micronoctuidae from China, with a checklist of Chinese species, including Taiwan (Lepidoptera: Noctuoidea, Micronoctuidae), pp. 41-53 in Zootaxa 2777 on page 45, DOI: 10.5281/zenodo.276927