Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
 

Register · Log In
HomeGuideID RequestRecentFrassForumsDonateHelp
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

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
TaxonomyBrowseInfoImagesLinksBooksData
Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Coccinelloidea » Coccinellid group » Lady Beetles (Coccinellidae) » Scymninae » Dusky Lady Beetles (Scymnini) » Nephus » Nephus intrusus
Photo#358178
Nephus intrusus, dorsal - Nephus intrusus
Copyright © 2009 MJ Hatfield

Nephus intrusus, dorsal - Nephus intrusus
Ames, Story County, Iowa, USA
September 24, 2009
Size: 1+ mm
I want to call it a Coccinellid but it's so small I just can't see.

"An annotated checklist of the lady beetles (Coleoptera: Coccinellidae) of Iowa, U.S.A." (Insecta Mundi 0091, A Journal of World Insect Systematics, Sept. 25, 2009), L. Hesler says: “Nephus (Scymnobius) intrusus (Horn). Wingo (1952: 43) noted this species as occurring in Iowa but presented no records. Distribution of N. intrusus in Iowa is plausible, as it has been found throughout the eastern U.S. (Gordon 1985: 310).

Images of this individual: tag all
Nephus intrusus, dorsal - Nephus intrusus Nephus intrusus, ventral - Nephus intrusus
tag · login or register to post comments
Contributed by MJ Hatfield on 13 December, 2009 - 10:58am
Last updated 20 March, 2016 - 10:29am

thanks a lot, Tim! very thorough.
Moved from Scymnobius.
… v belov, 13 December, 2009 - 10:52pm login or register to post comments

Moved very tentatively -- i'll ask around; nice LB anyway
Moved from ID Request.
… v belov, 13 December, 2009 - 11:02am login or register to post comments

 
Is this...
a valid genus now? Gordon (1985) lists is as a sybgenus of Nephus.
… Blaine Mathison, 13 December, 2009 - 11:05am login or register to post comments

 
indeed
Vandenberg(1) seems to concur -- the rank should be changed in the guide, but i'd leave it to our LB curators [Tim & Abby]
… v belov, 13 December, 2009 - 11:42am login or register to post comments

 
coccinellid subgenera
During the giant Coccinellidae reorganization, when there was much concern about how many levels of navigation there were going to be, I skimped a little on subgenera. But the people worried about being able to find H_armonia aren't the same ones who'll be navigating the depths of Scyminae anyway, so subgenus comin' right up :-)
… Abigail Parker, 14 December, 2009 - 8:54am login or register to post comments

 
good to know!
--and thanks
… v belov, 14 December, 2009 - 9:06am login or register to post comments

 
S. intrusus
Leaving the genus / subgenus to others, from Gordon '76(1), this certainly appears to be S. intrusus (Horn). From the subgenus (in Gordon), keys well, and description matches very well. Most of the rest of subgenus looks to be western. And coloration appears to be fairly unique for the larger genus (Nephus).
… Tim Moyer, 13 December, 2009 - 10:36pm login or register to post comments

I've seen...
coccinellids this small (Diomus comes to mind). But I'd prefer to see the antennae to make a family-level ID.
… Blaine Mathison, 13 December, 2009 - 11:00am login or register to post comments

 
I spoke too soon...
the ventral shot was posted as I was writing my first comment
… Blaine Mathison, 13 December, 2009 - 11:04am login or register to post comments

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.

Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.

Contributors own the copyright to and are solely responsible for contributed content.
Click the contributor's name for licensing and usage information.
Everything else copyright © 2003-2024 Iowa State University, unless otherwise noted.

Bugguide is hosted by:

Plant Pathology, Entomology and Microbiology at Iowa State University logo

Printer Friendly Version 		Terms of Use
Privacy Statement
Site Map
Contact