摘要
脸角泉蝇群Pegomya acklandi group特征如下:触角第一节长,故第一节与第二节交界处成膝状弯曲;触角芒具短纤毛;下腭须黄且末端微膨大;后气门下方暗色刚毛4～5根,并倒伏于气门厣上;尾器侧尾叶末端分叉,其外支长于内支,外支内缘具小突;后阳基侧突刚毛叶片状。
A key to 1 Japanese and 18 Chinese species of the Pegomya acklandi group,including 1 new species, is given below:1(4) Apical border of the lateral lobe of 5thsternite with an angular notch2(3) Hairs on the basal part fo surstylusrather thick and numerous; inner sideof the twig of surstylus with a tubercle;apex of postgonite hook-like. ..........Pegomya densipilosa Li et Deng, 19843(2) Basal part of surstylus with sparsehairs; postgonite bluntly rounded at theapex........P. rhagolobos Li et Deng, 19844(1) NO angular notch on the apical borderof the lateral lobe of 5th sternite5(10) Aedeagus of fork type6(9) Lateral lobe fo the 5th sternite with anarch of long setae7(8) Arch fo long setae of the lateral lobe of5th sternite in 2 rows and the apex ex-tremely expanded; acrophallus with ahook bent to the paraphallus at the dis-tal end ;A_3 twice as long as its width...........P. Semiannula Li et Deng, 19848(7) Lateral lobe of 5th sternite cone--shaped;acrophallus pointed apically and slight-ly curved. A_3 as long as its width.................P.laterisetiata Deng et Li, 19889(6) Setae on the lateral lobe of 5th sterniterather sparse and short; a strong setabehind the cerca; acrophallus with asmall hook at the distal end;A_3 as longas its width...................P.unimediseta Deng et Li, 198810(5) Aedeagus of long type or short type,but not of fork type11(32) Laternal lobe of 5th sternite of longtype;its lengih longer than the base12(23) Aedeagus of short type13(16) Setae on the apical border of 1aterallobe of sth sternite sparse or bare14(15) Inner side of the long twig of surstyluswith a tubercle ; setae of the laterallobe of the 5th sternite only along theinner border and inner posterior bor-der; A_3 more than twice as long as itswidth;post stigma brownish and small;coxae, trochanters and tarsi blackish..............P. melatrochanter Li et Deng, 198S15(14) Long twig of the surstylus with 2 den-ticular processes; apical border of thelateral lobe of 5th sternite without se-tae; A, twice as long as its width; poststigma yellowish and large, coxae andtrochanters yellowish................................P.dentella Li et Deng, 198316(13) Setae on the apical border of lateral lobeof 5th sternite rather numerous anddense17(22) Inner side of the long twig of surstyluswith a tubercle18(19) Inner border of latend lobe of 5th ster-nite with strong hairs and the lobe rather straight apically;acrophallusnarrowed distally and one of its endsharply pointed; A_3 more than twice aslong as its width;post stigma yellow-ish and large; coxae and trochantersyellowish ........................ P.hamatacrophalla Li et Deng, 198319(18) Inner border of the lateral lobe fo 5thsternite not straight apically; acrophal-lus not narrowed distally20(21) Basal part of 5th sternite shorter than1/3 of the lateral lobe,less than 1/4 ofthe area fo basal part of lateral lobebare, the inner twig of surstylus notlong enough to reach half of the lengthof outer twig ............ ..... .............P.cinsinnata Li et Deng, sp. nov.21(20) Lateral lobe of 5th sternire coveredwith setae on its whole length andsetae on apical part of lateral lobe notbent;of surstylus,the inner twig longerthan half the length of the outer one. .........P. acklandi Suwa, 197422(17) No tubercle on the long twig of sursty-lus; A_2 yellowish, A_3 brownish and 3times as long as its width; fore legyellow,post stigma yellowish large.................P. flaviprecoxa Li et Deng, 198323(12) Aedeagus of long type24(27) Anal cerci separated completely and V-1ike25(26) Outside of the inner border with a rowof long and strong hairs on the mid-posterior portion of the lateral lobe of5th sternite and the apex with somebairs; posterior process of pregonitewith 3 long hairs; postgonite notsickle-like.........................P. simpliciforceps Li et Deng, 198326(25) No long and strong hairs on the laterallobe of 5th sternite,apical hairs absent;posterior process of pregonite with 5long hairs; postgonite sickle-like..............................P.folifera Li et Deng, 198327(24) Basal part of anal cerci not separa
出处
《华西医科大学学报》
CAS
CSCD
1990年第2期150-154,共5页
Journal of West China University of Medical Sciences
基金
国家自然科学基金
