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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » Aculeata - Ants, Bees and Stinging Wasps » Apoidea sans Anthophila – Apoid Wasps » Square-headed Wasps, Sand Wasps, and Allies (Crabronidae) » Square-headed Wasps (Crabroninae) » Trypoxylini » Trypoxylon » Subgenus Trypargilum (Trypoxylon Subgenus Trypargilum) » Organ Pipe Mud-dauber Wasp (Trypoxylon politum)
Photo#1026328
Crabronidae, spine - Trypoxylon politum - male
Copyright © 2014 MJ Hatfield

Crabronidae, spine - Trypoxylon politum - Male
Great River Road, Allamakee County, Iowa, USA
July 12, 2014

Images of this individual: tag all
Crabronidae cocoons in sand - Trypoxylon politum Crabronidae emerge - Trypoxylon politum - male Crabronidae, lateral - Trypoxylon politum - male Crabronidae, thoraxX - Trypoxylon politum - male Crabronidae, spine - Trypoxylon politum - male Crabronidae, dorsal - Trypoxylon politum - male Crabronidae, cocoonX with no emergence - Trypoxylon politum Crabronidae, opened cocoon - Trypoxylon politum
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Contributed by MJ Hatfield on 11 December, 2014 - 8:46pm
Last updated 28 October, 2018 - 11:04am

Male
The ventral spine is a feature of the males only.
See here: ♂ The females don't have one, but they do have a stinger: ♀ I'm not sure if the mites care about the gender.
… Bob Biagi, 28 October, 2018 - 10:15am login or register to post comments

 
Thank you.
It would be good to have this information on the INFO page.
… MJ Hatfield, 28 October, 2018 - 11:01am login or register to post comments

 
Yes
That's true, but I'm not sure if this feature is specific to only this species or for the entire genus. Where to put the info...?
Someone smarter than me may be able to look it up and say, for sure. Otherwise, we should keep counting the antennae and abdominal segments, watching the hunting or nest-building and enjoying the mating postures, haha.
… Bob Biagi, 28 October, 2018 - 11:36am login or register to post comments

 
OK,
but just so you know, all the work you are doing on BG is much appreciated.
… MJ Hatfield, 28 October, 2018 - 11:58am login or register to post comments

Moved
Moved from Trypoxylon.
… John S. Ascher, 2 February, 2015 - 7:51am login or register to post comments

Moved
Moved from Aculeata - Ants, Bees and Stinging Wasps.
… John S. Ascher, 12 December, 2014 - 6:25pm login or register to post comments

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