Nemoura clavaloba sp.n.

(Figs. 4-6)

Material examined. Holotype ♂ and 8♂ paratypes from Tam Dao, 800-1000 m, Vinh Phu Province, Vietnam, 19 May-13 June 1995, H. Malicky (PMSL).

Adult habitus. General color brown. Basal antennal segment dark brown, next few segments pale and rest of antennal segments dark. Legs faintly banded.

Male. Forewing length 5 mm. Tergum 9 with a pair of long setae on each side of posterior margin; tergum 10 with a sparse median patch of short, thin setae (Fig. 4). Epiproct bearing a dorsoapical, bladelike process armed with tooth-like serrae (Fig. 5). Paraprocts bearing a sharply pointed, inwardly curved process in ventral aspect (Fig. 5), which appears club shaped in lateral aspect. Cerci simple.

Female. Unknown.

Larva. Unknown.

Etymology. The species name refers to the club shaped paraproct lobe.

Diagnosis. Nemoura clavaloba is similar in paraproct structure to N. raptoraloba and N. tenuiloba, both described below, and to N. rotundprojecta Du & Zhou (Du et al. 2008). However, the latter species has the acute process of the paraprocts curved strongly laterad and N. clavaloba is the only species of this group which has the extended paraproct lobe appearing clavate in lateral aspect, and also the only one in which the epiproct apex is strongly serrate on the dorsal margin (Fig. 5).