The elongate hemlock scale, Fiorinia externa Ferris, and a circular one, Nuculaspis tsugae (Marlatt) (Homoptera: Diaspididae) attack eastern hemlock, Tsuga canadensis Carriere in the eastern United States. They often co-exist with hemlock woolly adelgid, Adelges tsugae Annand, and hasten the decline of hemlock. Aspidiotiphagus citrinus Craw (Hymenoptera: Aphelinidae) was the only parasitoid spe...

BACKGROUND The genus Cales has been extensively revised recently and divided into two species groups, the noacki- and spenceri-groups Mottern et al. (2010), Mottern and Heraty (2014). NEW INFORMATION Cales motterni Polaszek, Shih & Ward sp. nov. is described from two females reared from the whitefly Bemisia pongamiae from Taiwan. The species belongs to the spenceri- group, and has a character...

in order to identify parasitoids of poplar aphid, sampling was done at urban areas of tehran in 2011. aphid galls were put in clear plastic containers and were evaluated until emergence of parasitoids on daily basis. among the samples, a new species namely protaphelinus nikolskajae (yasnosh, 1963) (chalcidoidea: aphelinidae) was identified. this species is a parasitoid of the popular aphid, pem...

Endoparasitic Hymenoptera vary in the extent to which they provision their eggs and thus in the degree to which they appear to rely on their hosts for resources during embryonic development. In this study, developmental rates were examined in two congeneric parasitoid species, Encarsia formosa and E. pergandiella, that provision their eggs to different degrees. E. formosa eggs are much larger t...

A review of the genera and species of Hymenoptera Parasitica and Chrysidoidea reported so far from Reunion Island is provided with host information. Data presented here is based on a review of the existing literature by the authors. The list includes: (1) 156 species of Ichneumonoidea belonging to 65 genera and 25 subfamilies (Braconidae: Agathidinae, Alysiinae, Aphidiinae, Braconinae, Charmont...