Loxandrus vulneratus? - Loxandrus
Dead Lake, Demopolis County, Alabama, USA
August 19, 2015
Loxandrus sure seems in need of some revision! I figured I'd share a specimen I've been looking at for sometime to get some advice, see what you all think.
The ABL = 7mm and the SBL = 6.5mm. The elytra is iridescent, despite this photo, I will post an additional photo of the elytra under harsher light. Using Allen (1972) I keyed it out to Loxandrus (micans group).
On my first attempt, I keyed this specimen out to Loxandrus crenatus due to it's light brown dorsum. Luckily I have a L. crenatus specimen in our collection, so I was able to clearly see the traits separating it including, a reflexed sharp hind angle, as well as a hairy tarsomere segment 5. I then decided this must be dark enough to qualify for the mican's group, or perhaps this specimen had freshly molted shortly after it fell into the trap.
What led me to this group include:
1. Lack of distinct microsculpture.
2. Punctate metepisternum.
3. Transverse mentum with deep pits.
To take this a step further I read up on the conversation about the "Loxandrus duryi-micans-vulneratus complex" on Brad's photo of Loxandrus duryi. This specimen has a very weak stria 7 basally, become very apparent apically. So this would leave my best guess to be Loxandrus vulneratus.
Let me know if you think this has any ground, as there are very few pictures available of this elusive group. The light brown color, and the lack of a lighter apex leave me skeptical, though I know these variations can exist. Many thanks!
This specimen was caught using a pitfall trap containing a 1:1 ratio of water and propylene glycol.
Images of this individual: tag all