|Box of beetles - two Aphthona on the left, and a larger Oulema.|
|Pinned female Oulema - note the blue-black head and elytra and red pronotum.|
|The female genitalia had been dissected and preserved in a drop of clear mountant. The important part is the little knot bottom-right where 'sd' = spermathecal duct.|
|An extract from Cox (1995) comparing the female genitalia of O. melanopus and O. rufocyanea, two very closely related species.|
Cox, M.L. (1995). Identification of the Oulema 'melanopus' species group (Chrysomelidae). The Coleopterist 4(2): 33-36.
Hubble, D. (2012). Keys to the adults of seed and leaf beetles of Britain and Ireland. FSC, Telford.
Hubble, D. (2013). Progress report on the Chrysomelidae recording scheme. The Coleopterist 22(3): 103-109.