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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Predaceous Diving Beetles (Dytiscidae) » Dytiscinae » Aciliini » Acilius » Acilius fraternus
Photo#607547
Super Water Beetle? - Acilius fraternus
Copyright © 2012 Federal Copyright Protected 2012 - Copyright Owner - Leon Paul Reyna of Leon Paul Reyna Photography

Super Water Beetle? - Acilius fraternus
Houston, Harris County, Texas, USA
November 4, 2007
Size: 1"
I found this guy in a puddle of water in front of my home!
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Contributed by L. Reyna on 16 January, 2012 - 6:16pm
Last updated 13 March, 2012 - 10:54pm

Moved
I'm pretty sure this is A. fraternus based on locality and features seen here on the underside- black ventral surface and hind femora.
… Tim Loh, 13 March, 2012 - 10:54pm login or register to post comments

Moved
Moved from ID Request.

Based on the structure of the male palette (enlarged area of foretarsus with adhesive discs). There are a couple species known from Texas. A dorsal photo would be helpful.
… Brady Richards, 16 January, 2012 - 9:59pm login or register to post comments

Dytiscid male
This looks to me like a male Predaceous Diving Beetle in the family Dytiscidae. Your specimen has the elarged tarsal pads that are present on many males of this family--as in this image:


Keep in mind that this might not be the same species (or, possibly, even genus, tribe, or subfamily) as your specimen.

See here for more information about the Dytiscidae.
… Peter Edelman, 16 January, 2012 - 7:20pm login or register to post comments

Dytiscidae
Not sure if it can be ID'd without seeing the top of the beetle.
… Brad Barnd, 16 January, 2012 - 7:20pm login or register to post comments

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