中国东北地区植绥螨新种和新纪录Ⅲ:(蜱螨亚纲:植绥螨科)

NEW SPECIES AND NEW RECORDS OF PHYTOSEIID MITES FROM NORTHEAST CHINA Ⅲ (ACARI: PHYTOSEIIDAE)

本文记述东北地区的植绥螨共7种,其中有4个新种:三毛盲走螨Typhlodromus trisetus sp.nov.兴城盲走螨Typhlodromus xingchengensis sp.nov.榛植绥螨Phytoseius corylus sp.nov.和杂草钝绥螨Amblyseius gramineous sp.nov.。2种我国新纪录:树木盲走螨Typhlodromus corticis Herbert,三孔盲走螨Typhlodromus ternatus Ehara,后者雄性为首次描述。一种新异名即西宁盲走螨Typhlodromus xiningensis Chen et Chu为苏氏盲走螨Typklodromus soleiger (Ribaga)的异名。

Typhlodromus trisetus sp. nov. (figs. 1-6)This species is similar to Typhlodromus cervix Wu et Li, 1984, and Typhlodromus (Para-seiulus) yokogawae Ehara et Hamaoka, 1980, but it differs from them in the shape of sperma~ theca, bell-shaped in trisetus, tube-shaped in the latter two species.Holotype female, paratypes 10 females, Aug. 24 1984, Qianshan (42°N, 123.4°E), Liaoning Province, on Larix sp.Typhlodromus soleiger (Ribaga)(figs. 7-9)Typhlodromus xiningensis Chen et Chu, 1980, Acta Jiangxi university, 3(1): 12-13, (?)igs. 13-17, New synonymy.The authors has examined T. soleiger which was donated by Dr. Chant and compared 11 specimens from China, and find them to be the same species. Therefore, we consider T. xinin-gensis to be synonym of T. soleiger.Typhlodromus eorticis Herbert (figs. 10-11)New recored from China. Collected from Larix sp. in Heilongjian Province.Typhlodromus xingchengensis sp. nov. (figs. 12-15)This species resembles T. subequalis Wu 1987, and T. kiso Ehara, 1972, but the peritrme extending to jl seta, sternal shield with posterior margin concave, and the macroseta on leg Ⅳ not obvious.Holotype female, allotype male, paratypes 2 females, Aug. 5. 1984, Xingchen, Liaoning Province (41.2°N, 120.7°E), on apple trees.Typhlodromus ternatus Ehara (figs. 17-20)Male: Dorsal shield partly reticulated. Setae t3 and R1 on the dorsal shield. Peritrme closed to setae j1. Ventrianal shield with five pairs preanal setae and with one pair of minute pre-anal pores, 32μ apart. Spermatodactyl reversely L-shaped.Specimens observed: 1 male, 12 female, July 1984, Mudanjian City, Heilongjian Province, on Larix sp. T. ternatus Ehara was described only in single female collected in Japan. The male is described for the first time.Phytoseius corylus sp. nov. (figs. 21-25)This species is similar to Phytoseius (Dubininellus) ribagai Athais-Henriot 1957, but it differs from the latter in the setae j3 s4, s6, Z4, Z3, r3 being much shorter.Holotype female, paratype 1 female, July 4. 1984, Mudanjian (44.2°N, 129.5°E), Hei-longjian Province, on Coryl sp.Amblyseius gramineous sp. nov. (figs. 26-30)This species is similar to A. shiganus Ehara 1972 and A. kaguya Ehara 1966, but it differs from them in the location of the ventrianal pores and the shape of the spermatheca.Holotype female, paratypes 2 females, July 9 1984, Mudanjian (44.2°N, 129.5°E), Hei-longjian Province, on grasses; 3 females, Aug. 19 1987, Tianjin (39.1°N, 117.2°E), on grasses.