小基瓢虫属Diomus Mulsant一新种记述(鞘翅目:瓢虫科)

A NEW SPECIES OF DIOMUS FROM FUJIAN(COLEOPTERA:COCCINELLIDAE)

小基瓢虫属 Diomus Mulsant 在小毛瓢虫族 Scymnini 中的主要特征为:前胸腹板纵隆线细弱,但伸达前缘;后基线伸达而与后缘重合,末端不向前弯曲;第1与第2腹板中部紧密连接而并合在一起;跗节3节,即跗爪端节仅有1节。本属 Ohta(1929)曾描述 Diomus futahoshii Ohta 原产于台湾。但 Sasaji(1971)检查了模式标本后认为该种是 Cryptogonus orbitulus(Gyllenhal)的异名。本属的另一种褐缝基瓢虫 Diomus brunsuturalid Pang et Gordon(1986),记录于海南岛。

The present paper gives the description of Diomus brachysiphonius sp. nov.(Coccinellidae:Scymnini)from Fujian province.The type specimen is deposited in the South China Agricultural University. Diomus brachysiphonius.sp.nov. Length:1.1mm.,width:0.7mm.Head yellow,with dark gray eyes. pronotum yellow,with dark brown to brown basal spot(the basal margin is darker).Scutellum black.Elytron black,with yellowish 1/4 apex(fig. A).The characters of the postcoxaI line and male genitalia as in fig.B. C.D. Holotype:male,No.850213-4,Aug.20,1084,Pang Xiong-fei collect- ed in Shaowu(Fujian province).