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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Symphyta" - Sawflies, Horntails, and Wood Wasps » Horntail Wasps (Siricidae) » Siricinae » Sirex
Photo#1587898
Sircicidae: Sirex - Sirex
Copyright © 2018 Carl Barrentine

Sircicidae: Sirex - Sirex
Spokane, Spokane County, Washington, USA
September 6, 2018
Size: Length ~ 3 cm
Hmmm...perhaps Sirex cyaneus, I wonder. Thanks to Gregory Pohl for help with this specimen (pers. comm., 07 September 2018).

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Sircicidae: Sirex - Sirex Sircicidae: Sirex - Sirex Sircicidae: Sirex - Sirex
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Contributed by Carl Barrentine on 7 September, 2018 - 11:21am

Not S. cyaneus
S. cyaneus males would have reddish-orange hind femora, never black. The leg color here should narrow this down to S. nigricornis, S. nitidus, or S. longicauda. The former most should be unlikely in Washington state. The remaining 2 are separated in part by the extent of reddish-orange on the base of the hind tibia and by the presence/absence of dark spots on the middle tibiae and first tarsomere. I don't think I'm seeing these dark spots on the middle legs, so that would seem to favor S. longicauda.
… Jonathan Hoskins, 30 September, 2022 - 6:39am login or register to post comments

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