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Small Bug - Hebrus

Small Bug - Hebrus
Sexaur Park, Brookings, Brookings County, South Dakota, USA
March 12, 2007
Size: 2mm
Small little bug floating downstream on the Sixmile Creek.

Hebridae: Merragata sp.
It looks like 5 antennomeres --> Merragata rather than Hebrus. Color is right for Merragata also.

Merra*gata sp.?
I think not. Compare genus key on family info page - Heb*rus should have the 4th segment constricted, making antennae to appear 5-segmented, while Merra*gata should have distinctly shorter antennae . . .

You are correct. In a frenzy of putting together a Heteroptera workshop for the Maine Entomological Society and coincidentally correcting the Veliids, I got these two genera mixed up.

Moved from Velvet Water Bugs.

. . . dwarf water strider.


Lipogomphus brevis
Although I hate using keys outside of my own state or area, I decided to try and find a general Hebridae key, and found one at It's a key of the aquatic "hemiptera" of Florida, and had all three genera of Hebrida, so I though I'd take a look. It seems since it has 4 antennal segments, and the 4th segement is about the same width (not obviously wider) than the others, it sends directly to Lipogomphus, the only species in this genus is L. brevis. I hope that this can place it, but any help would be appreciated.

Lipogomphus is a Southern gro
Lipogomphus is a Southern group... not South Dakotan... this can only be Hebrus

I'll move
to hebridae for now; maybe an expert can confirm your species ID.

are you sure on only 4 antenn
are you sure on only 4 antennomeres? looks like 5 in this photo.

Good eye, but not quite...
The 4th antennal segment has an indent in the middle, but is not entirely separated...I belive I saw it in the key somewhere...

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