{{Short description|Extinct genus of insects}} {{Speciesbox | fossil_range= {{fossil_range|50|44|Early Eocene}} | image = Brevivulva electroma (dorsal habitus).jpg | taxon = Brevivulva electroma | parent_authority = Gibson, 2009 | authority = Gibson, 2009 }}
'''''Brevivulva''''' is an extinct genus of parasitic wasp in the Eupelmidae subfamily Neanastatinae and contains the single species '''''Brevivulva electroma'''''.<ref name="Gibson2009">{{cite journal |author=Gary A. P. Gibson |year=2009 |title=Description of three new genera and four new species of Neanastatinae (Hymenoptera, Eupelmidae) from Baltic amber, with discussion of their relationships to extant taxa |journal=ZooKeys |volume=20 |pages=175–214 [190] |url=http://pensoftonline.net/zookeys/index.php/journal/article/view/161 |doi=10.3897/zookeys.20.161 |access-date=2010-03-30 |archive-url=https://web.archive.org/web/20100922071426/http://pensoftonline.net/zookeys/index.php/journal/article/view/161 |archive-date=2010-09-22 |url-status=dead |doi-access=free |bibcode=2009ZooK...20..175G }}</ref> The genus is solely known from the Early Eocene<ref name="Wolfe2009">{{cite journal |author1=Alexander P. Wolfe |author2=Ralf Tappert |author3=Karlis Muehlenbachs |author4=Marc Boudreau |author5=Ryan C. McKellar |author6=James F. Basinger |author7=Amber Garrett |year=2009 |title=A new proposal concerning the botanical origin of Baltic amber |journal=Proceedings of the Royal Society B: Biological Sciences |volume=276 |issue=1672 |pages=3403–3412 |doi=10.1098/rspb.2009.0806 |pmid=19570786 |pmc=2817186 |url=https://www.researchgate.net/publication/26334401 }}</ref> Baltic amber deposits in the Baltic Sea region of Europe.<ref name="Gibson2009"/>
==History and classification== ''Brevivulva electroma'' is known only from one fossil, the holotype, number "AMNH BaJWJ-408", which is a single female specimen preserved near the end of a triangular amber block {{convert|21|by|5|mm}} in size. The block is currently residing in the American Museum of Natural History paleoentomology collections in New York City.<ref name="Gibson2009"/> ''B. electroma'' was first studied by Gary A.P. Gibson, with his 2009 type description being published in the journal ''ZooKeys''.<ref name="Gibson2009"/> The generic name combines the Latin words ''brevis'', meaning "short", and ''vulva'', meaning "cover" or "wrapper" and refers to the short length of the hypopygium in comparison to the modern genus ''Lambdobregma''. The specific epithet "''electroma''" derives from the Latin ''electrum'' "amber".<ref name="Gibson2009"/>
==Description== ''Brevivulva electroma'' is {{convert|3.25|mm|in}} in length when the ovipositor is included and is a uniform dark color with a faint metallic green cast to the mesosoma at certain angles. Several areas on the female are obscured, with the mouth, lower half of the face and underside of the gaster to the rear of the hypopygium having thin coatings of white mold. The forewings are uniformly hyaline in coloration and highly setose along the front edge of the wing margin in the costal cell. Beyond the parastigma the setae grow sparse and the wing apex is apparently bare.<ref name="Gibson2009"/>
The overall structure of and general appearance is very similar to that of living species in the genus ''Lambdobregma''. This includes ''Brevivulva'' having a prepectus which is notably an elongate triangular shape and that narrows quickly towards the rear. However, a number of features set ''Brevivulva'' and ''Lambdobregma'' apart. Most distinctly ''Lambdobregma'' possesses a hypopygium which extends almost all the way to the tip of the gaster, whereas the hypopygium in ''Brevivulva'' extends only half the length of the gaster. Due to the stiff, exerted shape of the ovipositor sheath, Gibson postulated that ''Brevivulva electroma'' was parasitic on woodboring beetles or other hosts with similar habits of concealment.<ref name="Gibson2009"/>
==References== {{Reflist}}
{{Taxonbar|from=Q4962594}}
Category:Eupelmidae † Category:Prehistoric Hymenoptera genera Category:Monotypic prehistoric insect genera Category:Ypresian genera Category:Ypresian insects Category:Eocene insects of Europe Category:Fossil taxa described in 2009 Category:Hymenoptera of Europe Category:Baltic amber