摘要
记述采自江苏省连云港市花果山的等足目气肢虫科朝鲜潮虫属一新种 ,即花果山朝鲜潮虫KoreoniscushuaguoshanensisTangetGui,sp nov ,并讨论其与相似种莱氏朝鲜潮虫Koreoniscusracovitzai(Arcangeli,192 7)的区别。
A new species Koreoniscus huaguoshanensis sp nov from Huaguoshan in Jiangsu Province,East China,is described in this paper The type specimens are deposited in the Department of Biology,Yancheng Teachers′ College,Jiangsu Province Koreoniscus huaguoshanensis Tang et Gui,sp nov (Figs 1 13) Male length of body 8?mm,width 3 5?mm Dark brown color with blackish gray spots,a pair light brown longitudinal lateral patterns on the surface of pereional somites Each eye with 17 ocelli Cephalon with obtusely triangular median lobe which apex slightly protruded upwards;oblique lateral lobes well developed(Fig 1) The distal article of flagellum 1 5 times as long as proximal article of antenna(Fig 2).The posterior margin of pereional epimera sinuous In the peaked protrusion of 5th pereionite the length of inner border 4 times as long as the length of outer one(Fig 3) Dactylus of pereiopod 7 with a yellow unguis and a secondary unguis exopodite of pleopod 1(Fig 5)with bilobed apex,in which outer border of outer lobe with 4 setae;apex of endopod bent outwards Distal part of endopod of pleopod 2 styliform(Fig 8) Posterior angle of triangular telson about 60°,borders of telson slightly concave Uropod yellow in living specimen;endopodite 1 5 times as long as telson in length(Fig 9) Outer lobe of first maxillule with 4+6 teeth;inner lobe with 2 large penicillate setae,and the inner distal end of inner lobe prolonged into an acute protrusion,which directed slightly obliquely(Fig 11) Second maxilla bilobed,inner one with setae in 2/3 area of its distal part(Fig 12).Noduli laterales with b/c and d/c co ordinates as in Fig 13 Holotype ♂,paratypes 4 ♂♂,16♀♀ collected by TANG Bo Ping on June 10,1995,from Huaguoshan(34°35′N,119°12′E),Lianyungang City,Jiangsu Province,China Remarks.The present new species mostly allied to Koreoniscus racovitzai (Arcangeli,1927 ). It is distinguished from the latter in the following features:1)each eye with 17 ocelli,while in K.racovitzai with 22;2)in the peaked protrusion of 5th pereionite the length proportion of outer to inner one is 4 in the new species,but in K racovitzai the proportion is 1 5;3)exopod of pleopod 1 with bilobed apex:outer border of outer lobe in new species with 4 setae,but K.racovitzai without any seta on outer lobe;the inner lobe of apex is more stout than K racovitzai ;4)posterior angle of telson of the new species about 60°,while the latter species 40°;5)the highest point of the new species in b/c graph is pereionite Ⅲ;while that of K racovitzai is pereionite Ⅰ The second high point in d/c graph is pereionite Ⅲ in K. huaguoshanensis Tang et Gui,sp nov ,while in K racovitzai that is pereionite Ⅱ
出处
《动物分类学报》
CSCD
2000年第4期365-368,共4页
Acta Zootaxonomica Sinica
基金
江苏省教委自然科学基金资助项目
