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Hyperaspis medialis Casey - Hyperaspis medialis

Hyperaspis medialis Casey - Hyperaspis medialis
Sabal Palm Sanctuary, se. Brownsville, Cameron County, Texas, USA
June 6, 2009
Det. E.G. Riley, 2009

spmn in the TAMUIC

Images of this individual: tag all
Hyperaspis medialis Casey - Hyperaspis medialis Hyperaspis medialis Casey - Hyperaspis medialis

So is that the female with the dark head?
Gordon doesn't mention either gender showing a pale head as far as I'm reading, but I guess its the default for this genus.

Moved from Brachiacantha.

rather, Hyperaspis
I too thought initially this one was Brachiacantha. But after consulting Gordon's ref.(1), it didn't quite seem to fit a particular species (B. decora would be the closest). This ladybird has completely dark humerals, which seem always have a bit of color in similar Brachiacantha. Checking the key to the tribe, Brachiacantha always has a spike or spine on the protibia, whereas Hyperaspis (and others) does not.

Given that this is Hyperaspis, there appear to be several similar looking candidates. H. medialis Casey appears most likely, and is recorded by Gordon only from Brownsville and Alpine, TX. H. conspirans Casey also appears similar, especially as Gordon notes the anterior margin of the apical spot is usually emarginate. Gordon's key separates these two by location, with H. medialis from TX and H. conspirans (and a couple others) from AZ and NM. However, in the description for H. conspirans he specifically mentions "TX: Brewster Co., Chisos Mts." For H. conspirans he states "male head with base of vertex black, female head entirely black." Given that, and your Brownsville location, I'd say we go with H. medialis. Either way, it's another new species for BugGuide :)

Ed Riley concurs with H. medialis...
This is a rare U.S. sp...

Thanks Mike,
Nice find!
PS: keep looking. There's a few more rare ones in the Brownsville area.

These are the two rarest "RGV Ladies:"
Diomus pseudotaedatus Gordon
Hyperaspis rotunda Casey - info
Trust me, we're looking. We beat on every bush in sight all weekend long every trip down there...

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