small beetle - Eucinetus morio - BugGuide.Net

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Elateriformia » Scirtoidea » Plate-thigh Beetles (Eucinetidae) » Eucinetus » Eucinetus morio

Photo#380128

Copyright © 2010 tom murray

small beetle - Eucinetus morio

Cambridge, Middlesex County, Massachusetts, USA
March 27, 2010
Size: 2.5mm

Found in leaf litter. This little beetle was jumping like crazy, like a flea gone mad.

Images of this individual: tag all

small beetle - Eucinetus morio

small beetle - Eucinetus morio

small beetle - Eucinetus morio

small beetle - Eucinetus morio

small beetle - Eucinetus morio

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Contributed by tom murray on 28 March, 2010 - 2:09pm
Last updated 4 April, 2010 - 5:08pm

Moved

Moved from Eucinetus strigosus.

… Jeff Gruber, 4 April, 2010 - 5:08pm

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*

Hi Tom,

Do you still have this specimen? If so can you take a very careful look at the hind tibial spurs? I'm thinking this might be E. morio. I think morio has 2 apical tibial spurs on the metathoracic legs. The elytral strigae here seem rather more narrow than those I have seen on any E. strigosus I have encountered.

Thanks.

… Jeff Gruber, 28 March, 2010 - 7:59pm

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Close up added

Jeff, I think I see the 2 tibial spurs in the close up. So does that make this E. morio?

… tom murray, 28 March, 2010 - 8:17pm

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Yup.

Keys to E. morio.

… Jeff Gruber, 4 April, 2010 - 5:17pm

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Wow...

that was faster than Jimmy John's!

My eucinetid keys are down at the lab. I should be down there by midweek at the latest. If I remember correctly, I think the 2 apical metatibial spurs are what separate morio from the other Eucinetus species.

Thanks for the closeup. Definitely 2 spurs.

… Jeff Gruber, 28 March, 2010 - 8:26pm

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Moved

Moved from Beetles.

… Tim Loh, 28 March, 2010 - 2:18pm

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Hi Tom

Been doing some reseach in AM. This is a Eucinetus sp. (Nycteus lacks the transverse lines). Based on color and location, this is most-certainly E. strigosus! Nice!

… Blaine Mathison, 28 March, 2010 - 2:17pm

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Eucinetidae

Eucinetus or Nycteus. I dont have a ton of experience with this family.

… Blaine Mathison, 28 March, 2010 - 2:11pm

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