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)

Females of A. aquafrigida sp. n. are difficult to distinguish from females of the syntopic A. lyra (PAIVA), differing only in colouration: (1) median black stripes on pronotum always reaching hind margin in A. aquafrigida sp. n., but very rarely and faintly in A. lyra, (2) median black stripes on mesonotum at connection level abruptly narrowed in A. lyra, but more contiguous in A. aquafrigida sp. n., (3) the dark stripe on mesopleuron is broader in A. aquafrigida sp. n., usually not distinctly narrower than the yellow area below. Amemboa (s. str.) schwendingeri sp. n. (Figs 1, 4, 7-8) Etymology: This species is named in honour of Dr. PETER SCHWENDINGER (University of Innsbruck and Chiang Mai University) for his help during the collecting trip to the type locality. Holotype (apterous d ): "Thailand:Chiang Mai Prov./ Chiang Dao,Ban Yang Thung/ Pong, 500m, 8.11.1995/ leg. H. Zettel (10)" (NMW); paratypes (all apterous): 5tfd,4??, same locality and labels (NMW, CPC, KKUA); 1 d "Thailand: Mae Hong Son Prov./ 3 km SE Mae Hong Son/ 13.11.1995/ leg. H. Zettel (14b)" (NMW). Description: Apterous form: Measurements (in mm): Body length 3.5-3.8 ( dd ), 3.8-4.0 (??); width of head at eyes 0.84-0.88 (dd), 0.88-0.92 (ÇÇ); maximum width at mesacetabula 1.18-1.25 (dd), 1.40-1.46 ( ÇÇ ). - Colour: Yellowish to brownish; dorsal colour pattern see Fig. 1; in ventral view, male with proacetabula, broad anterior-lateral stripes and narrow posteriormedial stripe on mesonotum, metasternum, sternites 2-7, two narrow longitudinal stripes medially on segment 8 blackish; female only with proacetabula, broad anterior-lateral stripes and longitudinal stripes on sternite 7 blackish; antenna brownish, segment 1 yellowish; legs yellowish, tarsi brownish. - Ratio of lengths of antennái segments as 1.2 : 1 : 1.1 : 2.05 in both sexes; lengths ofleg segments in relation to length of mesofemur (= 100): male: profemur 34, protibia 30, protarsus 4+9, mesotibia 67, mesotarsus 28+12, metafemur 90, metatibia 38, metatarsus 16+11; female: profemur 35, protibia 35, protarsus 5+9, middle and hind leg as in male. - Mesonotum of male medianly 2.25, of female 3.1, times as long as pronotum; profemur of male with three distinct black hair patches, one basal and two in distal half which are separated by a deep excavation; protibia of male with a large tooth covered by dark hairs at tip (Fig. 4); fore leg of female simple; laterotergites 2-5 completely fused in both sexes, only suture between laterotergites 4 and 5 slightly (incompletely) developed in some specimens. - Male genitalia (Figs 7, 8): Pygophor long, low and slender, with long narrow apical part which is nearly parallel-sided in dorsal view, conspicuously hirsute in distal part; proctiger with long, s-curved lateral arms which are broad basally, slightly widened subapically and suddenly tapering apically, ending slightly truncate, ventrally set with a few stout bristles in distal part; dorsomedial part of proctiger set with long hairs basally, then bifid, forking off into a second pair of lateral arms; second lateral arms shorter than the first, not obviously tapering, set with stout bristles which are directed ventrad, apically with a conspicuous tuft of stout, curved bristles. Parameres lacking. - Female terminalia: Connexival margin of sternite 7 evenly down-curved, without prominent hairs; proctiger densely set with long yellow hairs. Macropterous form unknown. Distribution: Thailand: Mae Hong Son, Chiang Mai.