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Genus Grotea

ichneuman - Grotea californica - female Today she perched for a moment - Grotea californica - female The stick - Grotea californica  Ichneumon Wasp ? - Grotea californica Interesting Wasp? - Grotea anguina - female Hide & Seek with Another Grotea from Sweeney Ridge - Grotea californica - female ichneumon wasp - Grotea anguina
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon ("Parasitica" (parasitoid Apocrita))
Superfamily Ichneumonoidea (Braconid and Ichneumonid Wasps)
Family Ichneumonidae (Ichneumonid Wasps)
Subfamily Labeninae
Genus Grotea
Numbers
3 spp. in our area(1), 18 worldwide(2)
The only genus of tribe Groteini in our area.(3)
Size
Fore wing 7.0-11mm (9.0-11 mm G. anguina, 8.0-11 mm G. californica, 7.0 - 10.5 mm G. lokii)(1)
Body often around 15 mm (excludes antennae and ovipositor) (BG data)
Identification
Groteini is defined among Labeninae by the large, exposed labrum and multiple basal hamuli on the hind wing. Grotea is further defined by the decurved first metasomal segment, ovipositor length of between 1-3x the length of the hind femur, and vein 2m-cu of the fore wing with two bullae.(3)

"In photography, members of Labeninae are easily noted for their red bodies with yellow markings, elongated mesoscutum, body length of around 15mm, and orange-yellow ovipositor sheath. Grotea are readily separated from their sister genus, Labena, by their shorter ovipositors." - comment by Jon Hoskins

The three species in our area are recognized as follows:(1)
G. anguina: fore wing without apical spot, antennae yellow with black band at 0.7 of its length. Range: eastern US to TX
G. californica: fore wing without apical spot, antennae entirely yellow. Range: western coast
G. lokii: fore wing with prominent apical spot, antennae with black band at 0,7 of its length. Range: AZ, CO
Range
Canada to northern Argentina(1)
Food
The larvae of G. anguina and G. californica are known to parasitize members of the genus Ceratina.(1)
Print References
Graenicher, S. (1905). On the Habits of Two Ichneumonid Parasites of the Bee Ceratina Dupla Say. Entomological News 16: 43-49 (Full Text)
Rohwer, S. A. (1920). The North American ichneumon-flies of the tribes Labenini, Rhyssini, Xoridini, Odontomerini, and Phytodietini. Proc. U.S. Nat. Mus., 57: 405-474 (Full Text)
Slobodchikoff, C. N. (1967). Bionomics of Grotea californica Cresson, with a description of the larva and pupa (Hymenoptera: Ichneumonidae). Pan-Pacific Entomologist 43: 161-168. (Full Text)
Works Cited
1.A revision of the genus Grotea (Hymenoptera: Ichneumonidae)
Slobodchikoff, C. N. 1970. Pan-Pacific Entomologist 46: 50-63.
2.A new species of Grotea Cresson (Hymenoptera, Ichneumonidae, Labeninae) from Colombia
Andres Fabian Herrera Florez. 2014. ZooKeys 389(389):27-33.
3.Xenothyrini, a new tribe of Labeninae, and a key to the tribes and genera of Labeninae (Hymenoptera: Ichneumonidae)
Wahl, David B. 1996. Proceedings of the Entomological Society of Washington, 98(1): pp. 158-161.