Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 84. (Budapest 1992)

Štusák, J. M.: Two new species of Pneustocerus Horváth, 1905, with a list of already known species (Heteroptera, Berytidae)

ANNALES HISTORICO-NATURALES MUSEI NATIONALIS HUNGARICI Tomus 84. Budapest, 1992 p. 15-84 Two new species of Pneustocerus Horváth, 1905, with a list of already known species (Heteroptera, Berytidae) by J. M. STUSÁK, Prague Stusák, J. M.: Two new species of Pneustocerus Horváth, 1905, with a list of already known species (Heteroptera, Berytidae). - Annlshist-nat. Mus. natn, hung. 1992, 84: 75-84. Abstract - Pneustocerus vicinus sp. n. is described from Papua New Guinea and P. malayanus sp. n. from Malaya. Taprobanus DISTANT represents a synonym to Pneustocerus HORVÁTH, and T. gravetyi DISTANT is transferred to Pneustocerus as P. gravetyi (DISTANT), comb. n. A list and the distribution of hitherto known Pneustocerus species are given. Both new species are illustrated and distinguished from the others: P. nigricomis HORVÁTH (New Guinea), P. brevispina HORVÁTH (Borneo, Philippines) and P. gravetyi (DISTANT) (Sri Lanka, India). With 19 figures. The genus Pneustocerus HORVÁTH, 1905 includes species of Metacanthinae distributed in the Oriental region and Papuan subregion (Australian region). It can be characterized by extremely long antennae, rather robust pronotum with considerably upwardly vaulted pronotal callosities, very long ostiolar process, rather short and robust scutellar spine, short head, etc. There were two species hitherto known described by HORVÁTH (1905,1922). Further two species are described below as new and one species is transferred from the synonymous genus Taprobanus DISTANT, 1911 to Pneustocerus HORVÁTH. Thus, five species of the genus are known at present. Pneustocerus vicinus sp. n. (Figs 1-8) Derivation of name: vicinus = nearby, adjoining (Latin), indicates that it is closely related to the other species of the genus. Diagnosis: Antennae about twice as long as body, first antenna! segment as long as body. Apical clavae of femora and of first antennái segment light ochreous. Ostiolar process smooth, without transverse furrows. Antennae as well as legs light, without dark circular points. Apex of ostiolar process piceous. Posterior margin of pygophore convex in lateral view. Description: Body very narrow, about 6.7 times longer than maximal width (hemelytra). General colour light ochreous with tinge to light rusty brown. -Head about as long as wide across eyes, whole light, smooth and glossy. Anterior lobe of head considerably convex, posterior lobe of head very short (approximately half the length of postocular portion of head). Frons depressed from sides and narrowed between bases of antennae, and moderately hemmed here. Eyes rather large and considerably, hemispherically convex. Synthlipsis 3.33 times wider than dorsal width of eye in male. Anteocellary sulcus rather deep and semicircularly bent backwardly. Ocelli large, distance between them is about twice as long as distance of ocellus from posterior margin of eye. Ocelli situated somewhat nearer to anterior margin of pronotum than to posterior margin of eye. Very tiny, sporadical hairs situated on convex anterior lobe of head. - Antennae very long, i. e. 2.1 times longer than body, 1st antenna! segment 1.01 times shorter than body and only moderately shorter than 2nd and 3rd segments together. Second antenna! segment 1.4 times longer than 3rd and 3.6