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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Cucujoidea » Cucujid series » Shining Flower Beetles (Phalacridae) » Stilbus-group » Stilbus » apicalis-group (Stilbus apicalis-group)
Photo#1670209
Stilbus? - Stilbus - male
Copyright © 2019 Salvador Vitanza

Stilbus? - Stilbus - Male
Nogales, Santa Cruz County, Arizona, USA
May 31, 2019
Size: 2.2 mm
Greater resolution image here

Images of this individual: tag all
Stilbus? - Stilbus - male Stilbus? - Stilbus - male Stilbus? - Stilbus - male Stilbus? - Stilbus - male Stilbus? - Stilbus - male Stilbus? - Stilbus - male
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Contributed by Salvador Vitanza on 3 June, 2019 - 3:31pm
Last updated 23 November, 2020 - 12:46pm

Moved
Moved from Stilbus-group.
… v belov, 23 November, 2020 - 12:46pm login or register to post comments

Moved
Moved from Shining Flower Beetles.
… Salvador Vitanza, 23 November, 2020 - 12:03pm login or register to post comments

Stilbus apicalis group
Salvador, this is a species of Stilbus in the S. apicalis group. One interesting thing about this group is that although the eastern species, which we refer to as S. apicalis proper, appears to be parthenogenic (i.e., all-female), there are several western forms with males, and it's unclear whether any of these are conspecific with eastern S. apicalis. Incidentally, males can be recognized by a posteriorly-pointing tooth-like structure on the hind margin of abdominal ventrite 3, just barely visible in your ventral and lateral shots! (the tip of the aedeagus can also be seen peeking out behind ventrite 5).
… Matthew L. Gimmel, 23 November, 2020 - 11:56am login or register to post comments

 
Wonderful!
I appreciate your ID and helpful info. BugGuide has a section for "Stilbus-group". I will move these images there. I'm glad that I was fortunate to catch a male representing this western form. Also, I will add a link to the greater resolution images for all those who are not BG Editors. Thanks!
… Salvador Vitanza, 23 November, 2020 - 12:02pm login or register to post comments

Moved
Moved from Beetles.
… Blaine Mathison, 20 November, 2019 - 12:22pm login or register to post comments

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