A new species of Forcipomyia (Diptera: Ceratopogonidae) ectoparasitic on butterflies in New Guinea

A new species, Forcipomyia (Trichohelea) papuensis, is described from New Guinea, where it is ectoparasitic on butterflies. The modifications and diagnostic characters of this species are compared with those of the other Australasian Trichohelea.     

将乐县不同环境吸血蠓类调查

本文报告1998年8月份在闽北山区将乐县不同环境以灯光和牛饵诱捕法,调查吸血蠓种类分布及其种群密度。共采获吸血蠓类1924只,录属蠓科2属40种。其中城关古镛镇22种,龙栖山自然保护区25种,上山洞林果场35种。荒川库蠓为将乐县的优势蠓种,占全部采获蠓数的28.33％,其次为刺螯库蠓和肩肱库蠓,分别占全部采获蠓数的17.78％和14.81。然不同地方其优势蠓种不完全一样,城关古镛镇和上山洞林果场的优势蠓种为荒川库蠓,龙栖山自然保护区的优势蠓种则为肩肱库蠓。     

A taxonomic revision of the genus Stempellinella (Diptera: Chironomidae)

The species of the chironomid genus Stempellinella are revised, described, and figured, and keys to known larvae, pupae, and male and female adults are presented. Five species new to science are diagnosed and described. An emended generic diagnosis of Stempellinella is given and morphological differences from its putative sister genus Zavrelia are discussed. The partial cytochrome oxidase subunit I (COI) gene sequences (DNA barcodes) of 10 Stempellinella species are presented and the variation in genetic distances within and between species is compared. The results indicate that DNA barcodes are suitable molecular markers for identification of Stempellinella species. The following life stages and species are diagnosed and described: the larva, pupa, male, and female of S. brevis, S. chambiensis, S. ciliaris, S. edwardsi, S. fimbriata sp. n., S. flavidula, S. leptocelloides, S. saltuum, and S. truncata; the pupa, male, and female of S. reissi and S. tamaseptima; the larva, pupa, and male of Stempellinella boltoni sp. n.; the pupa and male of S. lamellata sp. n.; the male and female of S. coronata; and the male of S. apicula, S. brevilamellae, S. distincta sp. n., and S. sublettorum sp. n. Two pupal types are described but not formally named. The following changes of combination are made: Stempellina chambiensis and Stempellina truncata are transferred to the genus Stempellinella. Zavrelia inopinata is listed as a new junior synonym of Stempellinella ciliaris.     

基于二元选择模型的蠓虫分类方法

利用Probit、Logit和Extreme三种二元选择模型研究蠓虫分类问题,并用极大似然法进行参数估计,所得方法具有较高的拟合优度和较好的预测效果,可以用于有效鉴别两类蠓虫。