中国西北地区钝绥螨属五新种和一新纪录(蜱螨亚纲:植绥螨科)

FIVE NEW SPECIES AND ONE NEW RECORD OF AMBLYSEIUS FROM NORTH WEST CHINA (ACARI: MESOSTIGMATA: PHYTOSEIIDAE)

本文报道了作者在我国西北地区采集的植绥科钝绥螨属5个新种和1个新记录种。对新种作了详细的形态描述,分别与其近似种进行了比较并绘图说明。标本保存于广东省昆虫研究所。

In this paper six species of the genus Amblyseius Berlese are reported, which are collec-ted by the authors from Gansu, Ningxa and the west Nei Monggol. Among them five species are new to science, and one is newly cecorded to China. The type specimens are kept in Guangdong Institute of Entomology.Amblyseius subrotundus sp. nov. (figs. 1-7)This spects resembles A. culmulus Van devaescotiae (Chant, 1959), but the female differs from the latter in having much shorter setae L4, L5, and L6 and slight long setae L9. The shape of metapodal shield and spermatheca are also different in both two species. In addition, the male ventrianal shield with four or five pairs preanal setae while the latter with six pairs.Holotype female, allotype male, 29. Ⅶ. 1986, Min xian County (34°15'N, 104°57'E), Gansu Province, on Cotoneaster multiform, paratypes 6 females males, on Cotoneaster multi-forus and Caragana sp.; 2 females, 8. Ⅷ. 1987, Mt. Liu-Pan-Shan (1900m, 35°50'N, 106° 35'E) Mingxa Hui Autonomous region, on Hippophae rhamnoidesAmblyseius helanensis sp. nov. (figs. 8-12)This spectes resembles A. culmulus Van der Merwe, 1968, from South Africa, but it differs from the latter in the lateral setae and median setae M1,M2 longer except setae L9 shoter, and ventrianal shield without preanal pore.Holotype female, paratypes 5 females, 1. Ⅷ. 1987, Mt. He-Lan-Shan (2200m, 43°25'N, 106°23'E), on grass.Amblyseius gansuensis sp. nov. (figs. 13-20)This species is somewhat similar to A. desertus (Chant, 1957), but it differs from the latter by the relative length of dorsal setae shoter, ventri-anal shield without preanal pore and the shape of spermatheca is different.Holotype female, allotype male, paratypes 22 females and 6 males Min-qin County (38° 15'N, 103°30'E), Gansu Province, on Haloxylon ammodendron.Amblyseius lineatus sp. nov. (figs. 21-25)This species is similar to Amblyseius asetus (Chant, 1559), Amblyseius mexicanus (Gar-man, 1958) and A. sharovi Wainstein 1975, but it differs from them in the position of preanal pores and its distance, and from the shape of spermatheca and the lengths of cervix.Holotype female, paratypes 4 females, 1.Ⅷ. 1987, Mt. He-Lan-Shan (2200m, 43°35'N, 106°20'E), Nei Monggol Autonomous Region, on Artemis sp. Amblyseius ampullosus sp. nov. (figs. 26-29)Similar to A. meridiondis (Berlese, 1914), comparing redescription by Chant 1959 and Livschitz et Kuznetzov 1972, it differs from the latter in the setae L9 and M2 shoter, ventri-anal shield with rare reticulation, dorsal shield with 6 pairs of pores and the .spermatheca is different.Holotype female, paratypes 2 females, 1.Ⅷ.1987, Mt. He-Lan-Shan (2000m, 43°35'N, 105°20'E), on Artemisia sp. and grass.Amblyseius tauricus Livschitz et Kuznetzov, 1972 (figs. 30).New record from China.Distribution: Nei Monggol Automous Region.Habitat plant: grass.