Perilampidae

Definition

A small family of chalcidoid wasps (Hymenoptera: Chalcidoidea) comprising six described genera, characterized by brilliant metallic coloration, robust mesosomae, small triangular metasomae, and strongly sculptured integument. Members are primarily hyperparasitoids that attack other parasitoid larvae within their hosts, with a distinctive broad disc-like prothorax and multidigitate labrum shared with Eucharitidae. The family is closely allied to Eucharitidae, Chrysolampidae, and Eutrichosomatidae.

Etymology

From Greek perilaμπoς (perilampos, "shining all around") + -idae (family suffix), alluding to the brilliant metallic luster characteristic of these wasps.

Example

Perilampus species develop as hyperparasitoids of tachinid flies that parasitize lepidopteran caterpillars, with females depositing eggs into the host habitat rather than directly into hosts; the active first-instar larvae search for and penetrate primary parasitoid larvae.

Related Terms

• Chalcidoidea
• hyperparasitoid
• Eucharitidae
• Chrysolampidae
• Eutrichosomatidae
• mesosoma
• metasoma
• prothorax
• Labrum
• multidigitate

Usage Notes

Distinguished from related chalcidoid families by the combination of metallic coloration, robust body form, and hyperparasitoid biology. The multidigitate labrum is a key synapomorphy with Eucharitidae. Identification to genus requires examination of wing venation and antennal segmentation. The family is relatively species-poor but ecologically significant in parasitoid community dynamics.