Squamosa brevisunca brevisunca Wu & Fang, 2009

Figs 4, 5, 17, 18

Squamosa brevisunca brevisunca Wu & Fang, 2009, Acta Zootaxonimica Sinica 34 (2): 237. Type locality China: Hainan. Holotype (by original designation): ♂ (IZCAS) [examined].

Squamosa svetlanae = Squamosa svetlanae Solovyev & Witt, 2009, syn. nov., Entomofauna, suppl. 16: 186. Type locality Nord-Vietnam: Mt. Fan-si-pan. Holotype (by original designation): ♂ (MWM/ ZSM) [examined].

Specimen examined.

1♂, China, Prov. Yunnan, Lvchun County, Mt. Huanglian, 27-31.VII.2018, leg. HL. Han, J. Wu, MR. Li, genit. prep. WuJ-091-1 (NEFU).

Diagnosis.

The nominate subspecies cannot be distinguished from S. brevisunca yunnanensis Wu & Fang, 2009 (Fig. 6) externally but the morphology of male genitalia is diagnostic. In the male genitalia, the left process of juxta is long and the right process is finger-shaped apically in S. brevisunca brevisunca (Figs 17, 18), whereas the left process of juxta is short and the right process is blunt apically, without the finger-shaped apex in S. brevisunca yunnanensis (Fig. 15).

Distribution.

China (Hainan, Guangxi, Yunnan), Vietnam (Fig. 25).

Bionomics.

We collected a single specimen in July at altitude about 1945 m a.s.l., with a light trap close to a broad-leaved forest with ferns and shrubs.

Remarks.

By examining the holotypes of S. brevisunca brevisunca (China: Hainan) and S. svetlanae (Vietnam: Mt. Fan-si-pan), we found that there are no significant differences in either the external appearance or the morphology of the male genitalia between them. In addition, we also collected a male specimen of the nominate subspecies from southern Yunnan, China, an area extremely close to the type locality of S. svetlanae, on the basis of which we establish the synonymy S. brevisunca brevisunca Wu & Fang, 2009 = S. svetlanae Solovyev & Witt, 2009 syn. nov. here.