Canadian Forest Service Publications

Review of the family Rotoitidae (Hymenoptera: Chalcidoidea), with description of a new genus and species from Chile. 2000. Gibson, G.A.P.; Huber, J.T. Journal of Natural History 34:2293-2314.

Year: 2000

Issued by: Great Lakes Forestry Centre

Catalog ID: 34857

Language: English

Availability: PDF (request by e-mail)

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A new genus and species of Rotoitidae, Chiloe micropteron Gibson and Huber, is described from females and one male from Chile. The taxon is the second known genus and species, and the male is the only one known for the family. Scanning electron micrographs illustrate external and internal structure of C. micropteron females, and external structure of Rotoita basalis Boueek and Noyes, the other described genus and species. The original description of the axillae, prepectus and fore wing venation given for R. basalis is amended and additional features are described based on re-examination of three specimens studied by Boueek and Noyes and study of one additional female. The family diagnosis is modified to include features of Chiloe and some previously undescribed characters that are used to infer relationships within Chalcidoidea. A six-segmented clava in females and possibly a five-segmented clava in males support monophyly of Rotoitidae. A I4-segmented antenna in females, structure of the prepectus, and a single site of origin from the axillar phragnla for the mesotergal-mesotrochanteral muscle could indicate Rotoitidae as the basal lineage of Chalcidoidea, whereas ovipositor structure indicates Rotoitidae as the second-most basal lineage, with Mymaridae being the basal lineage.