Nemoura kontumensis, Fochetti, Romolo & Ceci, Massimo, 2017

Fochetti, Romolo & Ceci, Massimo, 2017, Two new species of Nemouridae (Plecoptera) from Vietnam, Zootaxa 4269 (3), pp. 447-450 : 447

Nemoura kontumensis sp. nov. ( Fig. 1 .)

Material examined. Holotype ♂ from Vietnam , Kon Tum Province, surroundings of Kon Plong, m 1200, 4/ 7.V.2016, 14°37, 350’ N; 108°17,651’ E. The holotype, preserved in alcohol 75%, is deposited in the Vietnam National Museum of Nature , Hanoi, Vietnam .

Adult habitus. A small light brown Nemoura . Antennae light brown, head uniformly brownish. Pro-, meso- and metanotum uniformly light brown. Abdomen and cerci yellowish.

Male ( Fig.1 ). Body length: 5.0 mm. Forewing length 5.0 mm, hindwing length 4.0 mm. Paraproct subtriangular. Cerci very long, bilobed, enlarged at base with a ventral lobe bearing an inwardly curved apical spine, narrow in the middle and large again distally, ending in a curved process duck beak shaped ( Fig. 1 a). Epiproct short, wide, apically notched with a pair of strong spines ( Fig. 1 b). Posterior margin of tergum 9 bears a pair of rounded, divided, spinulose lobes ( Fig.1 c).

Female: unknown

Larva: unknown

Affinities: Nemoura kontumensis is similar to N. neospiniloba described from Thailand, sharing the two lobes on the posterior margin of tergum 9. The new species can be easily distinguished from N. neospiniloba by the divided lobes on abdominal tergum 9, which are fused in N. neospiniloba , and by the different shape of the tergal lobes and the shape of the cerci and epiproct. Two Chinese species, N. furcocauda Wu, 1973 and N. mucronata Li & Yang, 2008 also have lobes on the posterior margin of tergum 9 ( Yang et al., 2014).

Etymology. The species name refers to Kun Tum Province, the area of the Vietnamese Central Highlands where it was collected.

Figures

FIGURE 1. Nemoura kontumensis n. sp. Male terminalia, a. dorsal, b. ventral, c. lateral.