陕西南部戴箭蜒属—新种(蜻蜒目、箭蜒科)  

A NEW SPECIES OF THE GENUS DAVIDIUS FROM SOUTHERN SHAANXI (ODONATA:GOMPHIDAE)

作　　者：朱慧倩[1] 

机构地区：[1]山西大学生物系,山西太原030006

出　　处：《Entomotaxonomia》1991年第3期175-177,共3页昆虫分类学报（英文）

摘　　要：方钧戴箭蜒Davidius squarrosus,新种(图1-7) 雄:体长44mm,腹部33mm,后翅30mm。体黑色,头、胸及腹部的浅色区均呈黄色。 头部:上唇的亚端部镶有1条细弱的黄纹,前唇基污黄色,上颚基部外露部分及上额均鲜黄色。胸部:前胸的前区黄色,中区的侧面有1小黄斑;合胸(图1)的领条纹中断,背条纹略向下分歧,其下端与领条纹的外侧端接合,形成7状纹,有或缺唇前上点,胸侧黄色,第2条纹残留抵及气门前缘的下段,第3条纹完整;翅透明。Davidius squarrosus Zhu, sp. nov. (Figs. 1-7)Holotype (?) , Yuanba, Shaanxi, 1985-Ⅵ-25, Collecbed by Yang Zude; allotype (?); paratype 1 (?), same data as holotype.Male and female: Total length 44mm , abdominal length 33mm, hind wing length 30mm. This new species can be distinguished from the close species D. trox Needham bythe characters below: Male: 1) ante-and post-nodal cross veins being and respectively; 2) the two branches of anterior hamule equal in length andthe posterior hamule broadly expanded as shown in fig.5; 3) segment 9, 10 and anal appendages black and unmarked; 4) the relative lengths of segment 7, 8, 9, 10 and anal appendages represented as 10 : 7 : 4 : 3.5 : 3. Female: 1) ante-and post-nodal crossveins are 2) segments 9, 10 and anal appendages black andunmarked; 3) the relative lengths of segments 7, 8, 9, 10 and anal appendages represented as 10 : 7 : 3 :1.3 : 1.2; 4) vulvar scale is prolonged to four fifths the length of the 9th sternite.The type specimens are deposited in the Insect Collections of Biology Department, Hanzhong Teachers' College, Shaanxi Province, China.

关 键 词：箭蜓科 戴箭蜓属 新种 

分 类 号：Q969.228.2[生物学—昆虫学]