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)
and differences in male genitalia have been found. Both support a separation of two allopatric subspecies. The type material of A. veláris consists of specimens from North Thailand (Chiang Mai Province: Doi Inthanon, Doi Suthep, Fang distr.) and Viet Nam (Vinh Phu Province) (POLHEMUS & ANDERSEN 1984). The holotype is from Doi Inthanon, and therefore the nominate form is that from North Thailand. After investigation of male genitalia it turned out that paratype specimens of A. veláris from Viet Nam belong to A. vasarhelyii ZETTEL, 1995. A population from Phetchabun Province shows a combination of characters of both subspecies and is described below. Depositories: CSS - Coll. W. D. SHEPARD, California State University, Sacramento, U.S.A.; CJP - Coll. J. T. POLHEMUS, Englewood, Colorado, U.S.A.; CNT - Coll. N. NlESER, Tiel, The Netherlands; CPC - Coll. P. P. CHEN, Beijing, China; KKUA - Khon Kaen University, Faculty of Agriculture, Department of Entomology, Khon Kaen, Thailand; KKUB - Khon Kaen University, Faculty of Sciences, Department of Biology, Khon Kaen, Thailand; NMW - Naturhistorisches Museum in Wien, Vienna, Austria; SMTD - Staatliches Museum für Tierkunde, Dresden, Germany; HNHM - Hungarian Natural History Museum, Budapest, Hungary; ZMUC - Zoological Museum, University of Copenhagen, Denmark. Amemboa (s. str.) aquafrigida sp. n. (Figs 2, 5-6, 9) Etymology: aquafrigida (Latin, ablativus loci) means "in cold water" and refers to the type locality in Nam Nao National Park; "nam nao" also means cold water in Thai language. Holotype (apterous d): "Thailand:Phetchabun Prov./ Nam Nao NP,Huai PhronV Laeng, 24.11.1995/ leg. H. ZETTEL (22)" (NMW);paratypes (all apterous): 38 dd , 33 ? Ç , same locality and labels (CJP, CNT, CPC, KKUA, KKUB, NMW); 1 d "Nam Nao NP/ Huai Phrom Laeng/ 24.11.1995/ leg. Tasanee Jamjanya" (KKUA); 2 d d "Thailand: Petchabun/ Nam Nao NP, Prom Laeng/ 22.111.1994/ leg. W. D.Shepard (1040)" (CSS); 4 dd , 3 Ç Ç "Thailand: Petchabun/ Nam Nao NP, Huai Ya/ Krua, 14.111.1994/ leg. W. D. Shepard (1039)" (CSS, NMW); 1 d , 1 Ç "Thailand: Chaiyaphum/ Phu Khieo NP, trib. to/ Huia Prom Mai, 5.IV.1994/ leg. W. D. Shepard (1054)" (NMW). Description: Apterous form: Measurements (in mm): Body length 3.4-3.7 ( dd), 3.8-4.2 (??); width of head at eyes 0.83-0.88 (dd), 0.89-0.94 ( Ç ? ); maximum width at mesacetabula 1.18-1.25 ( dd ), 1.42-1.55 ( ÇÇ ). - Colour: Yellowish to brownish; dorsal colour pattern see Fig. 2; in ventral view, male with proacetabula, broad anterior-lateral stripes and narrow posteriormedial stripe on mesonotum, metasternum, sternites 2-7 blackish; female with proacetabula, broad anterior-lateral stripes and a more or less developed longitudinal stripe along sternites blackish; antenna brownish, segment 1 yellowish; legs yellowish, tarsi brownish, profemur with a brownish stripe on posterior face. - Ratio of lengths of antennái segments as 1.2 : 1 : 1.15 : 1.7-1.8 in male, 1.3 : 1 : 1.2 : 1.9-2.0 in female; lengths of leg segments in relation to length of mesofemur (= 100): male: profemur 34, protibia 32, protarsus 5+8, mesotibia 67, mesotarsus 28+12, metafemur 91, metatibia 38, metatarsus 15+11; female: profemur 35, protibia 35, mesotibia 65, metatibia 38, others as in male. - Mesonotum of male medianly 2.35, of female 3.2, times as long as pronotum; profemur of male with three distinct black hair patches, one small basally and two in distal half which are separated by a shallow excavation; protibia of male with a thickening covered by short
