中国云南栅蛛属一新种(蜘蛛目:栅蛛科)

A NEW SPECIES OF THE GENUS HAHNIA FROM SOUTH CHINA (ARANEAE: HAHNIIDAE)

本文描述栅蛛属一新种:镰形栅蛛。该新种产自云南省景洪州原始林区小溪边。文内对该新种的鉴別特征均作了简要描述,附有外雌器和触肢器图。

This paper deals with a new species of the genus Hahnia. Type specimens are deposited in the Department of Biology, Hunan Normal University. All measurements are in mm.Hahnia falcata sp. nov. (fig. la-e )Holotype ♀, allotype ♂, paratypes 8 ♀♀, Jianghong Autonomous Prefecture (22°00’N, 100°23’E), Yunnan Provence. 18 October, 1987. Wang Jia-Fu.Holotype ♀: total length 4.80, carapace 2.10×1.55; abdomen 2.80×2.20.8 eyes, two rows. Anterior eye row recurved. Posterior eye row straight. Anterior median eye smaller than others. Carapace brownish black without any pattern and sparsely clothed with dark hairs, from posterior eye row to the median furrow. Chelicerae, maxillae and la-bium brown, Sternum reddish brown, with longer brownish hairs. Legs yellowish brown, with two brownish black ring flecks on each femur, tibia and metatarsus. Leg formula 4,1,2,3. Abdomen elongated ovoid, sparsely clothed with yellow-brown hairs and with four white chev-tons. The venter yellowish brown, Epigynum and vulva as in figs.Allotype ♂: total length 4.40, carapace 2.30×1.70, abdomen 2.40×1.50. Male similar to female in coloration and structure. Patellar apophysis and tibial apophysis of male palpal organ longest and distal end crook-like in shape.This new species is allied to Hahnia benoiti Bosmans et Thijs, 1980, but differs from the latter in: 1) body size of the this new species larger than the Hahnia benoiti; 2) abdomen of the this new species with four white chevrons, but H. benoiti with five whitish spots; 3) tibial apophysis of the this new species longer than the H. benoiti; 4) structure of epigynum and vulva of the this new species and H. benoiti make a word of difference.