Scolioidea

Scoliid Wasp Superfamily

Family Guides

Scoliidae(Scoliid Wasps)

Scolioidea is a superfamily of Hymenoptera containing the Scoliidae, a group of medium-sized with approximately 560 worldwide. The family is predominantly distributed in tropical and subtropical regions, with 64 species recorded in the New World. Scoliidae are ectoparasitoids of Scarabaeoidea larvae, particularly Melolonthinae (scarab beetles), which they immobilize and parasitize in terrestrial larval galleries. The superfamily has been taxonomically understudied in the Americas, with limited keys and ambiguous historical descriptions.

Damaeus by (c) Alexis Tinker-Tsavalas, some rights reserved (CC BY), uploaded by Alexis Tinker-Tsavalas. Used under a CC-BY license.

Epidermoptidae by (c) Cricket Raspet, some rights reserved (CC BY), uploaded by Cricket Raspet. Used under a CC-BY license.

Psoroptidae by (c) Oleksii Vasyliuk, some rights reserved (CC BY), uploaded by Oleksii Vasyliuk. Used under a CC-BY license.

Pronunciation

How to pronounce Scolioidea: //skɒliˈɔɪdiə//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Scoliidae can be distinguished from other wasps by their distinctively corrugated wing tips. Males are more slender and elongated than females, with significantly longer , though this is less pronounced than in the related Tiphiidae. The family tends to exhibit black coloration, often marked with yellow or orange. Scoliidae differ from Ichneumonidae in having shorter antennae with fewer segments and lacking the extremely long ovipositors characteristic of many ichneumonids.

Images

Habitat

Terrestrial environments; associated with the larval galleries of scarab beetles in soil and ground substrates. occur predominantly in tropical and subtropical regions.

Distribution

Worldwide distribution with greatest diversity in the Pantropical region. In the New World, 64 are known. Mexico: 23 morphospecies and 9 recorded across 30 states, with 41.6% of species occurring in both Nearctic and Neotropical regions. China: 52 species and 11 genera, common in south and central China. Hong Kong: included in fauna.

Host Associations

Scarabaeoidea larvae - especially Melolonthinae; females immobilize and parasitize second and third instar larvae in terrestrial larval galleries

Life Cycle

Females locate scarab beetle larvae in their terrestrial galleries, immobilize them, and parasitize them. The female then buries the parasitized deeper in a special . Development occurs as an ectoparasitoid on the host larva.

Ecological Role

Ectoparasitoid of scarab beetle larvae; of soil-dwelling scarab beetles including potential agricultural pests.

Human Relevance

Potential agents for scarab beetle pests. The has been poorly represented in entomological collections, with specimens frequently in bad condition and lacking biological data, hindering ecological and conservation research.

Similar Taxa

TiphiidaeRelated within Scolioidea; Scoliidae show less pronounced in length and body shape
IchneumonidaeBoth are , but Ichneumonidae have longer with more segments (usually at least 16) and often possess ovipositors longer than the body; Scoliidae have corrugated wing tips and shorter antennae

More Details

Taxonomic Status

Scolioidea has historically been treated as a superfamily containing Scoliidae, though some classifications have merged it into Vespoidea or treated Scoliidae as incertae sedis within . The superfamily rank is used in the provided sources.

Research Gaps

and of Scoliidae has remained understudied for over six decades in the Americas. Mexican specimens examined for recent revisions lacked any biological or ecological attributes. and improved curation are needed for future research.