Chalcididae? - Pteromalus cassotis - BugGuide.Net

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Parasitica" - Parasitoid Wasps » Chalcidoid Wasps (Chalcidoidea) » Pteromalid Wasps (Pteromalidae) » Pteromalinae » Pteromalini » Pteromalus » Pteromalus cassotis

Photo#1033911

Copyright © 2015 Marci Hess

Chalcididae? - Pteromalus cassotis

Blanchard township, Lafayette County, Wisconsin, USA
November 11, 2013
Size: 2mm

This hymenoptera came out of a Monarch chrysalis

Images of this individual: tag all

Chalcididae? - Pteromalus cassotis

Chalcididae? - Pteromalus cassotis

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Contributed by Marci Hess on 17 January, 2015 - 4:18pm
Last updated 11 April, 2017 - 9:00am

Moved

Moved from Pteromalids.
IDed by Carl Stenoien. His comment: very likely P. cassotis. The leg coloration matches that of all P. cassotis I've seen. This is a distinguishing character from P. puparum.

… Beatriz Moisset, 11 April, 2017 - 9:00am

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Monarch chrysalis

I posted a pic of the chrysalis

… Marci Hess, 13 April, 2017 - 10:20am

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Agreed cassotis

The wasp is Pteromalus cassotis. p. puparum looks different in the abdomen.

… Shaun Michael, 2 April, 2015 - 9:05pm

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Moved

Moved from Ants, Bees, Wasps and Sawflies.

… Ken Wolgemuth, 17 January, 2015 - 6:07pm

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Pteromalid…

Pteromalus cassotis is a species that frequently parasitizes monarchs.

See reference here.

… Ross Hill, 17 January, 2015 - 4:47pm

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Thanks. I searched and search

Thanks. I searched and searched for some clues before posting. I don't see a page for BugGuide.

… Marci Hess, 17 January, 2015 - 5:04pm

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Monarch Watch

I contacted Monarch Watch to see if they had any further research on parasitoids of monarchs and if they could shed any light on this. Here's a comment they made: "Current research in the Monarch Lab demonstrates that the wasp Pteromalus puparum (in the family Pteromalidae and the same superfamily, Chalcidoidea, as the two Chalcid wasps found in queens) could be an important pupal parasitoid (Oberhauser et al. in preparation). Pteromalus puparum wasps are tiny, and over 200 can emerge from one monarch pupa." A link to this site: http://monarchlab.org/biology-and-research/biology-and-natural-history/parasites-natural-enemies?/Lab/Research/Topics/Enemies/Default.aspx

… Marci Hess, 29 January, 2015 - 4:58pm

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