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

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Previous events


TaxonomyBrowseInfoImagesLinksBooksData
Photo#2041051
Small red and black nocturnal wasp  - Brachycistis - male

Small red and black nocturnal wasp - Brachycistis - Male
Garin Regional Park, Alameda County, California, USA
August 28, 2021
Size: 7-8mm
75F warm breeze at night. This is the first time of 3-4 times that it has been warm enough up in this flat high spot to attract insects to a UV light.

It was unusual to me in having a elongated semi-circular pterostigma, which I hadn't seen before.

Images of this individual: tag all
Small red and black nocturnal wasp  - Brachycistis - male Small red and black nocturnal wasp  - Brachycistis - male Small red and black nocturnal wasp  - Brachycistis - male

Moved
Moved from Chyphotes.

See the forum discussion here.

Moved

Chyphotes…
See reference here.

 
a similar wasp
I happened across this https://bugguide.net/node/view/1453284
which looks very similar. There's a comment about the antennae. I don't have access to that full-sized image to see details better, so can you explain the difference so I know what to look for please?

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