Micronecta (Ctenonecta) jaczewskii Wróblewski, 1962

Figs 1D, 2H–K

Micronecta jaczewskii Wróblewski, 1962: 178–180, figs 1–8 (type locality: Hanoi, Vietnam).

Micronecta jaczewskii – Wróblewski 1967: 239, figs 9–10 (descriptive notes); 1968: 775 (checklist). — Nieser 2000: 285, figs 29–30 (record Thailand, key). — Nieser et al. 2005: 190–191 (record China).

Diagnosis

Body length 2.1–2.5. Pronotum distinctly longer than median head length. Hemelytron (Fig. 1D) with indistinct longitudinal markings.

Males: fore femur with row of seven spines on proximal third ventrally; fore tibia without spine (Fig. 2H); palar claw, median lobe of sternite VII and free lobe (Fig. 2I) as in diagnosis of Ctenonecta . Left paramere: shaft stout, apex blunt (Fig. 2K). Right paramere: shaft broad at base, constricted at distal half, then expanded and constricted again before narrowly rounded apex; basal lobe with a distinct hump on mesial side, near base of shaft (Fig. 2J).

Material examined

VIETNAM – Cao Bang Prov. • 3 ♂♂, 3 ♀♀; Trung Khanh, Duc Hong Commune, stream; 19 Dec. 2013; A.D. Tran et al. leg.; TAD1376; ZVNU . – Phu Tho Prov. • 1 ♂; Xuan Son N.P., Xoan stream, near its confluence with Ha Bang stream; 21°5.303′ N, 104°57.559′ E; 27 Aug. 2014; T.S. Nguyen leg.; TS1407; ZVNU . – Hanoi • 2 ♂♂, 1 ♀; Nhue River, in Lien Mac area; 25 Mar. 2010; T.M. Pham leg.; HN08; ZVNU . – Quang Nam Prov. • 2 ♂♂, 1 ♀; Duy Xuyen District, Duy Phu Village, My Son hamlet, My Son Sanctuary; 15°46.228′ N, 108°07.155′ E; Apr. 2017; T.D. Chu leg.; MS1723; ZVNU .

Distribution

Vietnam: Lao Cai, Hanoi, Ha Tinh (Wróblewski 1962, 1967); first records for Cao Bang, Phu Tho, Quang Nam. Other countries: Thailand, China (Nieser 2000; Nieser et al. 2005).

Remarks

The male of this species can easily be separated from other species of Micronecta by its distinct shape of the right paramere (Fig. 2J), together with its unique palar claw (Fig. 2H) and the presence of combs of setae on the middle tibia.