Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 89. (Budapest 1997)

Zettel, H. ; Chen, P.: Three new taxa of Amemboa Esaki, 1925, from Thailand and Viet Nam (Heteroptera: Gerridae)

Amemboa (Amemboides) veláris orientális ssp. n. (Figs 11-12) Etymology: orientális (Latin, adjective) means "eastern"; referring to the eastern distribution of the new subspecies in relation to the nominal subspecies. Holotype (apterous d ): "S VIETNAM, 28.-30.4.1994/ 12 km N Dalat-LangBian/ P. Pacholátko &/ L. Dembicky leg." (NMW); paratypes (all apterous): 5 d d , 9 Ç Ç , from the same locality (NMW, CPC, SMTD); 5 d d , 4 ? ? "Viet Nam/ Suoi Vang/ 15 km NW Da Lat", "No. 308./ 17.X. 1988, leg./ Vásárhelyi" (HNHM, NMW); 2 d d , 2 ? ? "S VIETNAM, 16 km N Dalat-/ Ankreot, 1205'N, 10824'E/ 1400m, 15.4.1995/leg. Pacholátko & Dembicky" (NMW). Description: Main characters all as in Amemboa veláris s.str.; differences are found only in the following characters: Apterous forms: Measurements (in mm): Body length of 4.5—4.8 (dd), 4.8-5.6 ( Ç Ç , depending if the tip of abdomen is curved down or not); width of head at eyes 0.92-0.98 ( d d ), 1.00-1.06 (99), maximum width at mesacetabula 1.42-1.56 (dd), 1.82-1.95 (??).- Dorsal colour pattern usually with more contrast and brighter than in ssp. veláris, posterior third of mesonotum usually bright yellowish and anterior stripes clearly separated from surrounding brownish area. - Male genitalia: paramere simple, straight bar-shaped, slightly tapering toward apex, 0.21-0.26 mm long, with obtusely pointed apex (Fig. 12). - Female abdomen: along hind margins of tergites always without long hairs; connexival margin of sternite 7 evenly rounded and densely set with long dark hairs (Fig. 11). Macropterous form unknown. Distribution: Viet Nam: Lam Dong. Comparative notes: Males of Amemboa veláris veláris and A. v. orientális ssp. n. are distinguishable by the length of the parameres, which are smaller in subspecies orientális (0.21-0.25 mm in ssp. orientális and 0.26—0.31 mm in ssp. veláris); apex of paramere is less rounded in subspecies orientális (comp. Figs 12-13). Females differ in pilosity on connexival margin of sternite 7, which consists of long, brown to black, dense and shaggy hairs in subspecies orientális (Fig. 11), but short, whitish and very sparse hairs in subspecies veláris s. str. (Fig. 10). Further, females of subspecies veláris s. str. frequently bear some long black hairs on the hind margins of tergites 5-7, which are always lacking in subspecies orientális. Males and females are distinctly larger in subspecies orientális (apterous males 4.5^4.8 mm, apterous females 4.8-5.6 mm in ssp. orientális, apterous males 3.9-4.4 mm, apterous females 4.2-4.7 mm in ssp. veláris). Amemboa (Amemboides) veláris, intermediate form (Fig. 3) Material examined: 1 apterous d , 3 macropterous d d ,2 apterous Ç Ç , 2 macropterous Ç Ç "ThaiIand:Phetchabun Prov./ Nam Nao NP,Huai Ya Krua/ nr. Headquarter, 24.11./ 1995, leg. H. ZETTEL (23)" (NMW) (KKUB, NMW); 1 macropterous d "Nam Nao NP/ 24.11.1995/ leg. Tasanee