摘要
记述寄螨属1新种：简单寄螨Parasitussimplendogyniisp．nov．和革索螨属1新种：泾源革索螨Gamasodesjingyuanensissp．nov．
A new species of the genus Parasitus and a new species of the genus Gamasodes 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 simplendogynii sp. nov. （Figs. 1-3） Female. Length ofidiosoma 914-946 （av. 928） p,m, Width 516-538 （av. 527） p,m. Anterior dorsal shield with 22 pairs of setae, D1, D3 and M2 long and pilose, M2 the longest, remaining setae short and simple, ET1 and ET2 minute. Posterior dorsal shield with more than 20 pairs of setae, pilose or simple. Presternal shields 1 pair, small, situated at out of tritosternal base. St1 bifurcate, inserting on a pair of small sclerites; St2, St3 and 2 pairs of pores on sternal shield. MSt and the 3rd pair of pores on metastemal shields. Genital shield with 1 pair of setae. Interior tine of metasternal shields short and narrow, endogynium simple, shown in Fig. 1B. Ventro-anal shield with 10 pairs of ventral setae and 3 perianal setae, of which 3 pairs of ventral setae pilose. Ad situated at level of posterior margin of anus, subequal to anus in length, PA longer than anus, pilose. Peritreme reaching to posterior part of coxa I anteriorly. Tectum 3 pronged, medial prong longer. Movable digit of chela tridentate, fixed digit with several denticles. Seta al of palpfemur bifurcate, al~ and a12 of palpgenu entire. Legs setae simple. Tarsus II-IV with 4 apical spines respectively. Male. Length ofidiosoma 828 - 849 （av. 839） txm, width 441 - 452 （av. 446） Ixm. Anterior dorsal shield with 22 pairs of setae, posterior dorsal shield with about 26 pairs of setae, dorsal setae as in female. Presternal shields 1 pair, triangular. Holoventral shield with 3 pairs of sternal setae, 1 pair of metasternal setae, 1 pair of genital setae, about 20 pairs of ventral setae, 3 perianal setae and 3 pairs of pores, of which 3 pairs of ventral setae and PA pilose. Tectum 3 pronged, medial prong far longer than lateral ones. Movable digit of chela unidentate. Leg II with 2 large spurs on femur, a double-headed small spurs on genu and tibia respectively. The new species belong to consanguineus-group, genus Parasitus Latreille, but differs from all known species of the group by simple endogyrlium, shown in Fig. lB. Holotype ~, paratypes 2 ~） ~）, 2 ~ c~ and 1 deutonymph, ex cow dung, from Jingyuan County （35° 26＇ N, 106° 24＇ E）, Ningxia Hui Autonomous Region, 5 Oct. 2011. Name of the new species from ＂simpl-＂ （simple） and ＂endogynii＂ （endogynium）. 2 Gamasodes fingyuanensis sp. nov. （Figs. 4-5） Deutonymph. Length ofidiosoma 763 - 806 （av. 781） Ixm, Width 538 - 570 （av. 555） Ixm. Anterior dorsal shield with 19 pairs of setae, F1, D1 D3 and M2 long and pilose, M2 the longest, remaining setae short and simple, ETa, ET2 and M1 minute, ET2, Ml and M3 on cuticle from the shield. Posterior dorsal shield with 14 pairs of setae, of which 2 pairs of setae long and pilose, remains short and simple. Presternal shields 1 pair, rectangular. Sternal shield reticulated, with 4 pairs of setae and 3 pairs of pores. Metapodal shields 1 pair, semicircular. Peritreme reaching to middle of coxa I anteriorly. Tectum triangular, with several denticles at lateral margins. Seta al ofpalpfemur stout seta-like, all and a12 ofpalpgenu spoon-shaped. Legs setae short and simple. Femur of leg II with 2 spurs, genu and tibia with a spur respectively, tarsus with 2 spurs, of which a spur long spiniform. Tarsus II-IV with 4 subapical setae respectively. Female. Length ofidiosoma 1 054 μm, Width 763 p,m. Anterior dorsal shield with 21 pairs of setae, FI, D1, D3 and M2 long and pilose, M2 the longest, remaining setae short and simple, ET1 and ET2 minute, M3 separated from the shield. Posterior dorsal shield with 19 pairs of setae, of which 2 pairs long and pilose, remains short and simple. Prestemal shields 1 pair. Stemal shield with 3 pairs of setae and 2 pairs of pores. MSt and the 3rd pair of pores on metastemal shields. Genital shield with 1 pair of setae. Endogynium circular, with 1 pair of small denticles at posterior margin, 1 large tooth on one side. Ventro-anal shield distinctly contracted backward, with 7 pairs of ventral setae and 3 perianal setae, simple but posterior ventral setae pilose. Ad situated at level of middle of anus, both Ad and PA slightly shorter than anus. Peritreme reaching to anterior part of coxa I anteriorly. Leg II with 2 short spurs on femur. Tarsus IMV with 4 apical spines respectively. The new species is near to Gamasodes sinicus Tian et Gu, 1991 and Gamasodes tongdensis Li, Yang et Chen, 1999, but in deutonymph of the new species dorsal setae D1 and D3 pilose, all femur, genu, tibia and tarsus of leg II with spurs; however in the latter 2 species D1 and D3 simple, tibia of leg II without spur. Holotype deutonymph, paratypes 1 and 2 deutonymphs, under human excrement soil, from Jingyuan County （35° 26＇ N, 106° 24＇ E）, Ningxia Hui Autonomous Region, 20 July 2011. The new species is named after collected locality of type specimens.
出处
《蛛形学报》
2012年第2期76-82,共7页
Acta Arachnologica Sinica
