File:Ichneumon stramentor (female) (26727858354).jpg

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A striking yellow-banded ichneumon found in my conservatory in Ipswich (VC25 East Suffolk, TM166450) on 6 May 2016. There is a volume of the Royal Entomological Society Handbook that covers this wasp: RES Handbook Vol7 Part 2a ii, available as a free download here: <a href="http://www.royensoc.co.uk/.../files/Vol07_Part02a_ii.pdf" rel="nofollow">www.royensoc.co.uk/.../files/Vol07_Part02a_ii.pdf</a> I used the anatomy diagrams in Tereshkin's illustrated key at <a href="http://www.zobodat.at/pdf/LBB_0041_2_1317-1608.pdf" rel="nofollow">www.zobodat.at/pdf/LBB_0041_2_1317-1608.pdf</a> along with numerous google searches to work out where to look for several of the characteristics. As usual, I photographed what I thought were the relevant features of the insect for an expert to be able to determine its species. From the key I concluded that it is a female Ichneumon stramentarius, Gravenhorst 1820 which Perkins describes as "Not uncommon". Dr Gavin Broad, Senior Curator of Hymenoptera at the Natural History Museum agreed with the identification, but explained that the species called stramentarius by Perkins is now known as stramentor as the true stramentarius turned out to be something else!

In this image you can see the distinctive yellow patches and also that the tarsi are not conspicuously expanded, and segment 3 of hind tarsus has a central length : breadth ratio of at least 1.5:1.
Date
Source Ichneumon stramentor (female)
Author Martin Cooper from Ipswich, UK
Camera location52° 03′ 40.74″ N, 1° 09′ 32.53″ E Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by Martin Cooper Ipswich at https://flickr.com/photos/92899351@N08/26727858354 (archive). It was reviewed on 22 June 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

22 June 2018

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current23:00, 22 June 2018Thumbnail for version as of 23:00, 22 June 20183,304 × 2,283 (1.66 MB)Meisam (talk | contribs)Transferred from Flickr via #flickr2commons

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