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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Elateriformia » Buprestoidea » Metallic Wood-boring Beetles (Buprestidae) » Polycestinae » Haplostethini » Mastogenius
Photo#2013403
Mastogenius - male
Copyright © 2021 Joel DuBois

Mastogenius - Male
Granite Gap, Hidalgo County, New Mexico, USA
May 29, 2021
On Quercus turbinella

The location may seem a bit strange, but trust me--there are Quercus trees at Granite Gap! I spent some time working the few Q. turbinella trees in the area in hopes of grabbing species like this one--one time I find what I'm looking for!--and beat this guy from the second tree I tried. These guys are very tiny and thus flighty and I was concerned I'd lose it!

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Mastogenius - male Mastogenius
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Contributed by Joel DuBois on 31 July, 2021 - 4:57pm
Last updated 12 November, 2023 - 8:45am

Mastogenius
This looks quite a bit like Mastogenius puncticollis, a rarely collected species. I have collected a few on Quercus hypoleucoides in the Huachucas (type locality) and Chiricahuas. It's about 2 mm long. Granite Gap would be an unusual locality, but not impossible.
… Norm Woodley, 13 June, 2022 - 12:10am login or register to post comments

Joel sent me this specimen. I
Joel sent me this specimen. It is male but only the very tip of the adeagus is extracted. The antennae stretch past the pronotum. It keys to M. arizonicus in Bellamy's 2002 key but differs in several ways from the description. It is widest behind the middle, more coarsely punctate, and has a raised median ridge which is somewhat visible in the image here. Granite gap ranges from 1300' to 1500' which is 300-500 ft. lower in elevation than the type locality NE of Tucson, AZ. Looks like Joel needs to go get more specimens and pull the adeagus out all the way.
… Jason Hansen, 15 March, 2022 - 11:52am login or register to post comments

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