Category: Latridiidae

The Latridid that broke the camel’s back

It’s that time again, when an excess of specimens requires the splitting up of a specimen box.  Not that this is a bad thing; actually it’s great, as long as you have an extra box sitting around.

I’ve been putting away some identified specimens, but I just couldn’t find any room for some new Latridiidae.  So its time to split it up, which I’ve been putting off for awhile.  Actually, I probably have four or five boxes that need splitting now that I think about it….

Here is the before picture.  Yeah, sloppy I know.  Kudos if you can guess all 12 families I have stuffed in this box.

old latridiidae etc

A touch of Laboulbeniales

A recent post on BugGuide brought to my attention to a group of fungi known as Laboulbeniales that infect insects.  I knew I had seen these before, but I had never really paid them much attention.  Sorting through some Carabidae I had collected this summer, I noticed one of the strange growths on the elytron of a Clivina americana.  After posting an image of this beetle to BugGuide, I continued sorting the sample.  To my surprise, I found the fungal hyphae on a large number of specimens.  Once I had seen the first, they became fairly easy to spot (despite all the moth scales floating around in the alcohol).

I contacted the author of the Laboulbeniales post, Danny Haelewaters, now a doctoral student at the Farlow Herbarium, Harvard University.  He is studying Laboulbeniales fungi, so I’ll be sending the specimens to him for his research.

The Carabidae that appeared infected included Clivina americana, Perigona nigriceps, Elaphropus xanthopus, Acupalpus partiarius, Acupalpus indistinctus, Bradycellus rupestris, Stenolophus lecontei, and Stenolophus ochropezus.  There were also infected Homaeotarsus cf. bicolor (Staphylinidae) and Melanophthalma sp. (Latridiidae).

Below are images of some infected beetles (Homaeotarsus, Melanophthalma, Elaphropus xanthopus, and Stenolophus ochropezus):

HomaeotarsusMelanophthalma

Elaphropus xanthopusStenolophus ochropezus
UPDATE: Danny Haelewaters has informed me that the parasite on the Homaeotarsus is Corethromyces cryptobii, a new record for Kentucky.  Hopefully more to come.