Baeus seminulum, which has no common name, is a species of parasitic wasp found in western Europe.[1] Its known hosts are spider eggs, especially of the families Araneidae and Theridiidae.[2]
| Baeus seminulum | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Scelionidae |
| Genus: | Baeus |
| Species: | B. seminulum
|
| Binomial name | |
| Baeus seminulum Haliday, 1833
| |
Description
editFemales do not have any wings[1], instead they ride on adults female spiders until it lays eggs.[3] The male's wings are narrow and feature long marginal setae, with the longest marginal setae nearly as long as the maximum wing width. The hind wing is 8.5 times its maximum width, with the longest marginal setae measuring 1.6 times the maximum wing width.[2]
Female antennae is clavate. Males have antennae that are subclavate and have more segments.[3] The first and second abdominal tergites (T1 and T2) are characterized by numerous closely spaced ridges on T2. The genitalia feature well-developed digiti. Males appear closely related to those of Baeus japonicus, although B. japonicus exhibits a slightly narrower forewing and longer marginal setae.[2]
Distribution
editB. seminulum is found in western Europe, notably France, Sweden, the United Kingdom, Finland, and Ukraine.[5] The species has also been recorded from several other European countries: Austria, Belgium, Denmark, Germany, Italy, Russia, and Portugal.[2]
References
edit- ^ a b Marshall, Stephen A. (2023). Hymenoptera: the natural history & diversity of wasps, bees & ants (First printing ed.). Buffalo, New York Richmond Hill, Ontario: Firefly Books. ISBN 978-0-2281-0371-4.
- ^ a b c d PINTUREAU, BERNARD; AL-NABHAN, MOUNIR (2003-07-16). "New data on the European species of three genera Scelionidae (Hymenoptera)". Zootaxa. 238 (1). doi:10.11646/zootaxa.238.1.1. ISSN 1175-5334.
- ^ a b "Genus Baeus". bugguide.net. Retrieved 2024-10-19.
- ^ Jussila, Reijo (1996-09-01). "Ichneumonidae (Hymenoptera) of Greenland found in Scoresbysund (lttoggortoormiit)". Entomologica Fennica. 7 (3): 145–156. doi:10.33338/ef.83903. ISSN 2489-4966.
- ^ Citizen science observations for Baeus seminulum at iNaturalist