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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » True Bugs, Cicadas, Hoppers, Aphids and Allies (Hemiptera) » True Bugs (Heteroptera) » Pentatomomorpha » Pentatomoidea » Burrowing Bugs (Cydnidae) » Amnestus » pusillus or basidentatus (Amnestus pusillus or basidentatus)
Photo#981945
Coleoptera - Amnestus
Copyright © 2014 Jack Foreman

Coleoptera - Amnestus
Franklin County, Missouri, USA
August 19, 2014
Size: 2mm
I've been trying to figure out on my own what these are for two months but somehow I'm overlooking them. I haven't even got close. They've been fairly regular visitors at the light since early July. HELP ME PLEASE! ( :
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Contributed by Jack Foreman on 21 August, 2014 - 8:20am
Last updated 29 August, 2020 - 1:01am

Moved
Moved from Amnestus.
… v belov, 29 August, 2020 - 1:01am login or register to post comments

pusillus or basidentatus... more likely the latter
… v belov, 12 September, 2019 - 7:12pm login or register to post comments

yeah... both the antennae and wings rule out the beetle option
Moved from True Bugs.
… v belov, 21 August, 2014 - 8:26am login or register to post comments

 
Thanks =V=
I know my ignorance is showing but at risk of further embarrassing myself this morning, how do the wings and antennae rule out beetles?
… Jack Foreman, 21 August, 2014 - 9:13am login or register to post comments

 
wings and antennae
At least 95% of beetle species have 11-segmented antennae; 9-10-segmented condition is also not uncommon among the Melolonthinae, Cossoninae, Ciidae, Melyridae, Alticini... (some members of the former 3 groups may show as few as 7-8)
Only highly specialized, myrmeco/termitophiles (scattered in a number of lineages) may have 3-6, but with antennomeres grotesquely enlarged and apical one exceeding the head in size.
Heteroptera, on the other hand, have a maximum of 5 (usually 4), and the forewings ending in overlapping membranous part (in flying forms like the one here) – which is never the case in beetles, whose elytra are always uniformly leathery. (and that's why the heteropteran forewing is called hemelytron, meaning 'semi-elytron')
… v belov, 21 August, 2014 - 9:51am login or register to post comments

 
Hemelytra vs. elytra, cool!
You are a veritable encyclopedia =V=. Thank you.
… Jack Foreman, 21 August, 2014 - 10:15am login or register to post comments

for starters let's get to the correct order :-]
Moved from Beetles.
… Blaine Mathison, 21 August, 2014 - 8:21am login or register to post comments

 
Oh jeesh, Thanks Blaine
Guess that explains why I couldn't find it in Beetles....embarrassing....
… Jack Foreman, 21 August, 2014 - 9:04am login or register to post comments

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