Megarhyssa greenei
{{Short description|Species of wasp}}
{{Speciesbox
| image = Megarhyssa greenei female.jpg
| genus = Megarhyssa
| species = greenei
| display_parents = 2
| authority = Viereck, 1911
}}
Megarhyssa greenei, also known as Greene's giant ichneumonid wasp, is a species of large ichneumon wasp. It is known from the United States and Canada.[http://www.insectimages.org/browse/detail.cfm?imgnum=1351014 Megarhyssa greenei] at www.insectimages.org.
Description and identification
It is very similar in appearance to Megarhyssa macrurus, but the latter species has a relatively longer ovipositor (about 2x the total body length, where greenei is only slightly greater than 1x), and usually has more extensive dark wing markings. M. greenei also lacks the dark striping on the face present on M. macrurus.{{Cite journal|last=Pook|first=Victoria|last2=Sharkey|first2=Michael|last3=Wahl|first3=David|date=2016-01-04|title=Key to the species of Megarhyssa (Hymenoptera, Ichneumonidae, Rhyssinae) in America, north of Mexico|url=https://dez.pensoft.net/articles.php?id=7619|journal=Deutsche Entomologische Zeitschrift|language=en|volume=63|issue=1|pages=137–148|doi=10.3897/dez.63.7619|issn=1860-1324|doi-access=free}}
Ecology
M. greenei is a parasitoid wasp, and its host is Tremex columba, a sawfly. Females must find a larva of this species, and lay an egg close by or on it. The larva of Megarhyssa devours it, it pupates under the bark of trees, and it emerges as an adult one year later.{{Cite journal |last=Stillwell |first=M. A. |date=July 1967 |title=The Pigeon Tremex, Tremex columba (Hymenoptera: Siricidae), in New Brunswick |url=https://www.cambridge.org/core/product/identifier/S0008347X00058788/type/journal_article |journal=The Canadian Entomologist |language=en |volume=99 |issue=7 |pages=685–689 |doi=10.4039/Ent99685-7 |issn=0008-347X|url-access=subscription }}
References
{{Reflist}}
External links
Photos on [http://bugguide.net/node/view/84170 BugGuide.net]
{{Taxonbar|from=Q6808834}}
Category:Insects described in 1911
{{Ichneumonidae-stub}}