Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Register
·
Log In
Home
Guide
ID Request
Recent
Frass
Forums
Donate
Help
Clickable Guide
Calendar
Upcoming Events
Registration
is open for the
2024 BugGuide gathering in Idaho
July 24-27
Moth submissions
from
National Moth Week 2023
Photos of
insects
and
people
from the
2022 BugGuide gathering in New Mexico
, July 20-24
Photos of
insects
and
people
from the
Spring 2021 gathering in Louisiana
, April 28-May 2
Photos of
insects
and
people
from the
2019 gathering in Louisiana
, July 25-27
Photos of
insects
and
people
from the
2018 gathering in Virginia
, July 27-29
Previous events
Taxonomy
Browse
Info
Images
Links
Books
Data
Home
» Guide »
Arthropods (Arthropoda)
»
Hexapods (Hexapoda)
»
Insects (Insecta)
»
Beetles (Coleoptera)
»
Polyphaga
»
Series Elateriformia
»
Byrrhoidea
»
Water Penny Beetles (Psephenidae)
»
Psepheninae
»
Psephenus
»
Psephenus herricki
Photo#207653
Copyright © 2008
Jim McClarin
Water Penny Beetle -
Psephenus herricki
Louden, Merrimack County, New Hampshire, USA
July 27, 2008
Size: about 9 mm
I was curious to see the feet that can cling so deftly to slimy river rocks.
Images of this individual:
tag all
tag
·
login
or
register
to post comments
Contributed by
Jim McClarin
on 29 July, 2008 - 6:01pm
Nice find, Jim.
I think the feet function mainly for locomotion. I read that clinging is mainly accomplished by minute hooks all along the edges of the carapace, that work much as Velcro does.
…
Stephen Luk
, 30 July, 2008 - 10:48am
login
or
register
to post comments
Makes sense.
I've tried and failed to get fine paintbrush bristles under the edge, yet when they want to move this carapace edge seems to glide quickly and easily over the uneven surfaces of the rock. I think the yellowish rim of the carapace is composed of fine setae but I have yet to get enough resolution on it to tell for sure.
…
Jim McClarin
, 30 July, 2008 - 5:36pm
login
or
register
to post comments
Comment viewing options
Flat list - collapsed
Flat list - expanded
Threaded list - collapsed
Threaded list - expanded
Date - newest first
Date - oldest first
10 comments per page
30 comments per page
50 comments per page
70 comments per page
90 comments per page
Select your preferred way to display the comments and click 'Save settings' to activate your changes.