摘要
记述寄螨属1新种：棒毛寄螨Parasitus clavasetosus sp．nov．和新革螨属1新种：丛枝新革螨Neogamasus fasciculus sp．nov．
A new species of the genus Parasitus and a new species of the genus Neogamasus are described in the present paper. Type specimens are deposited in the Entomology Gallery, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing. 1 Parasitus elavasetosus sp. nov. （Figs.1-12） Female. Length of idiosoma 1161 μm, width 753 μm. Both dorsal shield covering entire dorsum, anterior dorsal shield with 22 pairs of setae, posterior dorsal shield with about 30 pairs of setae; dorsal setae Dl, D3, M2 and 2 pairs of setae on posterior dorsal shield long, club-like, blunt and pilose; F1 and setae on posterior part of posterior dorsal shield long, sharp and pilose; F2 shorter and simple; remains minute and simple. Presternal shields 1 pair, triangular. Anterior margin of sternal shield weakly sclerotized, St1 bifurcate, lying on basal sclerites, St2 and St3 thicken, pores 2 pairs. Metasternal shields with MSt and the 3rd pair of pores. Genital shield with 1 pair of setae. Endogynium shown in Fig. 4. Ventro-anal shield joining with peritrematal shields, with 8 pairs of ventral setae, the last pair club-like and pilose. Ad situated at level of posterior margin of anus, subequal to anus in length, PA club-like and pilose. Peritreme reaching to middle of coxa I anteriorly. Tectum 3-pronged. Palptrochanter with 2 long and smooth setae, setae al on palpfemur bifurcate, all and a12 on palpgunu entire. Legs setae needle-like, but a seta on genu I! pilose. Male. Setae on anterior dorsal shield as in female. Tritosternal base degenerated, laciniae normal. Sterno-genital region of holoventral shield with 3 pairs of sternal setae, l pair of metasternal setae and 1 pair of genital setae, pores 3 pairs. Movable digit of chela unidentate, fixed digit bidentate. Leg II with a biforked spur on femur and double-headed short and blunt spurs on genu and tibia. Peritrme, rectum, palpal setae and legs setae as in female. The new species belong to consanguineus-group of genus Parctsitus, differs from other known species of the group by dorsal setae D1, D3 and Mz club-like and blunt distally. Endogynium different also. Holotype♀ , paratype 1 ♂, ex humus soil, from Emei Mountain（29°32′ N, 103°19′ E）, Sichuan Province, 4 Oct. 2005. The new species is named after dorsal setae D1, D3 and Mz club-shaped. 2 Neogamasus faseieulus sp. nov. （Figs. 13-19） Female. Length of idiosoma 753 μm, width 484 μm. Two dorsal shields covering dorsum, anterior dorsal shield with 22 pairs of setae, posterior dorsal shield with about 30 pairs of setae, all dorsal setae simple and slender, the tip reaching to insertion of next setae, ET1 and ET2 minute, M2 the longest. Length of the following setae in μm： F~ 49, F2 34, F3 49, V 49, D1 56, D2 56, D3 56, D453, M2113. Prestemal shields wedge-shaped. Sternal shield distinctly reticulated, antero-lateral angles very broad, posterior margin deeply concave, with 3 pairs of setae and 2 pairs of pores. Metasternal shields longer, with MSt and the 3rd pair of pores. Genital shield with 1 pair of setae. Endogynium is similar to a clump of dead branches in shape. Ventro-anal shield joining to peritrematal shields, with 9 pairs of preanal setae and 3 perianal setae. Peritreme reaching between coxae I and II anteriorly. Tectum narrow, with 3 prongs. Seta al on palpfemur branchy at one side, all and a12 on palpgenu smooth. The new species is similar to Neogamasus tridentatus Karg et Glockemann, 1995, but in the new species two dorsal shields wholly separated, posterior margin of sternal shield deeply concave, tectum narrower; in the latter species two dorsal shields joined at both sides, posterior margin of sternal shield shallowly concave, tectum broader. Holotype ♀, ex humus soil, from Ganzhou （25° 51′ N, 114°55′ E） Jiangxi Province, 18 Apl. 2003. The new species is named after endogynium thickly branch-like.
出处
《蛛形学报》
2012年第1期12-16,共5页
Acta Arachnologica Sinica
