中国羽爪瘿螨亚科四新种记述 (蜱螨亚纲 ,羽爪瘿螨科 )

FOUR NEW SPECIES OF DIPTILOMIOPINAE FROM CHINA(ACARI,DIPTILOMIOPIDAE)

记述羽爪瘿螨亚科Diptilomiopinae 4新种 :树参羽爪瘿螨Diptilomiopusdendropanacissp .nov .,长毛柃羽爪瘿螨Diptilomiopuseuryaesp .nov .,华南桦双羽爪瘿螨Diptacusbetulaesp .nov .和大明山双羽爪瘿螨Diptacusdamingshanensissp .nov .。

This paper deals with four new species of Diptilomiopinae from south China.All measurements are given in ?μm.These species were collected from Da-ming Shan,Wuming County(23°09′N,108°17′E),Guangxi Zhuang Autonomous Region, 28 July 2000, by QIN Ai-Zhi,WEI Sui-Gai and CHEN Jian-Wen.Type specimens are deposited in the Agricultural College,Guangxi University.1 Diptilomiopus dendropanacis sp. nov.(Figs.1-5) Female.Body fusiform,cream colored,length 155.0-172.5,width 81,thickness 70.Rostrum directed downwards at right angle.Dorsal shield 35 long,65 wide,lacking anterior lobe;dorsal tutercles and setae absent,median line incomplete,interrupted;admedian and submedian lines complete,forminga network.Anterior coxae with short sternal line,coxae with granules and curves,first coxal setae absent.Leg Ⅰ 21 long,femoral setae,tibial setae and genu absent;featherclaw divided,each 6-rayed;solenidion knobbed.Leg Ⅱ 16.5 long,without femoral setae and genu.Thanosome with middorsal and lateral ridges.Dorsal annuli smooth,ventral annuli with round microtubercles.Lateral setae absent,3 pairs of ventral setae present,base of female genitalia coverflap with irregular wavy lines.;This new species resembles Diptilomiopus assamica Keifer,1959,but can be distinguished from the latter by:median line incomplete,interrupted;dorsal tubercles and setae absent;featherchaw 6-rayed and base of the female genitalia coverflap having irregular wavy lines.;Holotype ♀,paratypes 10♀♀.Host:Dendropanax chevalieri(Araliaceae).Vagrant.2 Diptilomiopus euryae sp. nov.(Figs.6-10) Female.Body robust,137.5-160.0 long,70 wide,72.5 thick,light yellow in color,fusiform. Rostrum large,down curved dorsal shield 31 long,57.5 wide,without anterior lobe;dorsal tubercles present,without dorsal setae;shield design a network of raised lines.Anterior coxae with short sternal line,first coxal setae absent;hindcoxae with a wavy line near the 3rd coxal setae.Leg Ⅰ 33 long,without femoral setae,genu fused with tibia,tibial setae absent;featherclaw divided,each 9-rayed;solenidion knobbed.Leg Ⅱ 28 long,femoral setae absent;genu fused with tibia.Dorsal annuli smooth,ventral annuli with cone-shaped microtubercles.Lateral setae absent,3 pairs of ventral setae present.Female genitalia coverflap with 3 lines.;This species is similar to Diptilomiopus alangii Mohanasundaram,1982,but differs from the latter in median line complete,dorsal tubercles present,hindcoxae with a wavy line near the 3rd coxal setae,featherclaw 9-rayed.;Holotype ♀,paratypes 16♀♀.Host:Eurya patentipila(Theaceae).Vagrant.3 Diptacus betulae sp. nov.(Figs.11-15) Female.Body fusiform,132.5-158.8 long,57.5 wide,70 thick,cream colored.Rostrum large,down curved.Dorsal shield 34 long,47.5 wide,with anterior lobe;median and admedian lines complete,forming network with 3 transverse lines;submedian lines interrupted;dorsal tubercles and setae present.Anterior coxae with sternal line,3 pairs of coxal setae present,coxae dotted with short lines.Leg Ⅰ 35.5 long,without femoral setae;featherclaw divided,each 5-rayed;solenidion knobbed.Leg Ⅱ 31.5 long,femoral setae absent.Thanosome with median ridge behind light wide groove;from beginning with the 7th dorsal annuli,each ring divided into two parts:transparent area and dark area,with elongated microtubercles in the dark area;ventral annuli with microtubercles.Lateral setae and 3 pairs of ventral setae present.Female genitalia coverflap with 12-14 longitudinal ribs at base.;This new species is similar to Diptacus ulmi Kuang et Huang 1991,except that the new species has median and submedian lines;thanosome with median ridge behind median groove,each dorsal annuli divided into two parts:transparent area and dark area;base of the female genitalia coverflap with 12-14 longitudinal ribs.;Holotype ♀,paratypes 1♂,13♀♀.Host:Betula austro-sinensis(Betulaceae).Vagrant.4 Diptacus damingshanensisi sp.nov.(Figs.16-19) Female.Body creamcolored,fusiform,covered with wax,175-200 long,62.5 wide,77.5 thick.Rostrum large,down-curved.Dorsal shield 37.5 long,50 wide,with thick anterior