S. Mahunka szerk.: Folia Entomologica Hungarica 53. (Budapest, 1992)

ments expanded internally, ultimate segment longitudinal elliptic; segment length ratios as follows: 2.8:2.0:1.3:1.2:1.9:1.7:1.5:1.7:1.7:1.8:2.8. Left mandible (Fig. 5) bifurcate at apex, upper tooth longer than lower one, each tooth acute, with a row of small tubercles on inner edge. Ventral surface of head more sparsely punctate; a groove for receiving of the basal half of antennae is present; gular suture distinct; terminal segment of maxillary palpi longitudinal, slightly compressed laterally, blunt at apex. - Pronotum transverse, about 1.5 times wider than long, gently convex in male (Fig. 11), more convex in female (Fig. 10), densely punctate, lateral sides slightly reflexed, narrowly margined and finely crenulate. Prosternum rather short, coarsely punctate, prosternai process strongly narrowed and arched between procoxae, strongly flattened and projected backwards at apex; propleura strongly rugose. Scutellum helmetal, densely and deeply punctate. - Elytra about 1.2-1.3 times longer than wide; striai punctures moderately deeply impressed, irregular in shape; shoulders slightly convex, rounded; lateral sides very narrowly marginale and weakly reflexed; apical declivity abruptly rounded toward apex; epipleura rather wide, reaching apex of elytra, sharply rugose. - Mesosternum deeply, widely excavated at basal part, intercoxal area very narrow; coxae oblique; trochantins visible, forming the external wall of mesocoxal cavities; metasternum convex, with median groove becoming deeper posteriorly, basal area with rounded excavation medially. Abdominal sterna strongly convex medially, deeply punctate; punctures separated by about 1-2 puncture diameter. - Femora slightly flattened on sides, densely punctate, sparsely pubescent, fore femora without groove on front side; middle and hind femora a little bit longer and slenderer than fore ones. Trochanters relatively small, with long yellowish hairs. Fore tibiae strongly dilated apically (Fig. 8), nearly triangulate in cross section, outer margin strongly serrate and bent upwards; inner corner of apex with a short upper and a thick long lower spur; middle and hind tibiae with dentiform projection on the outer corner of apex, inner corner with two equal spurs. Tarsal formula 5-5-4; basal tarsomere of fore (Fig. 8) and middle tarsi weakly sclerotized, withdrawn into the excavation on the underside of tibia near inner corner and almost invisible in dorsal view. Aedeagus as in Figs 14-15; median lobe with paired laciniae directing downwards. Eighth abdominal tergite of female (Fig. 13) densely pubescent apically. Type material: Holotype, male: Vietnam, Gia Lai-Con turn province, BuonLoi, 20.VII. 1983, leg. J. Zaitzev. Paratypes, 10 males and 15 females, labelled as the holotype. The holotype as well as 3 male and 3 female paratypes are housed in the Zoological Department of the Hungarian Natural History Museum. Seven male and 12 female paratypes are deposited in the Zoological Museum of the Moscow State University Lomonossow. Biology: The specimens were collected from the fruit body of a polyporous fungus {Ganoderma sp.). Etymology: The species is dedicated to J. Zaitzev, the collector of the series of the type specimens. Remarks: This new species, Rhipidandrus zaitzevi sp. n, is closely related to Rhipidandrus similis Kaszab, 1955, R. dybasi Kulzer, 1957 and R. scotytoides Chujo, 1985. These four species have a shining impunctate median area on the cranium, at least in males. Neither the type nor any other specimens of scotytoides were