Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Photo#1182293
Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female

Cuckoo Wasp with Dark Belly - Chrysura sagmatis - Female
Tonopah Desert, Maricopa County, Arizona, USA
May 29, 2015
Size: 6.5mm
These are images of a Cuckoo Wasp, that is most likely a female Chrysura sagmatis.
ID Info:
Keying to Subfamily and Tribe of Western North American Chrysididae: (Kimsey 2014)(1)
1. - Metasoma with four or fewer segments in males and three in females; sternum flat or concave; face above antenna sockets flat or concave, usually with well developed scalpal basin; pronotum not narrowed submedially and without transverse groove, instead with narrow collar followed by subquadrate disk (Subfamily Chrysidinae) = 2
2. - Tongue not elongate nor tubular, fitting closely in oral fossa; metasoma with three external segments in both sexes; apical tergum apically rounded, medially notched or with one to six well-developed teeth or lobes, without two large lateral subapical foveae = 3
3. - Tarsal claws edentate; apical tergum with subapical pit row; mesopluron with horizontal scrobal sulcus; occiput with transverse welt or carina above foramen, often ending in one small tooth = Tribe Chrysididini (Chrysidini)
Keying to Genera of Tribe Chrysidini:
1. - Tergum T3 apical rim without teeth or angles = 2
2. - T3 apical rim, if notched, without lateral angle; transverse frontal carina various = 3
3. - T3 apical rim edentate or rarely with a weak lateral angle; face unusually flattened and completely granulate-punctate without fine median cross-ridging, no transverse frontal carina = Genus Chrysura Dahlborn
Keying to Species of Genus Chrysura:
1. - Malar space more than 2x MOD long (midocellus diameter); propodeal angles strongly projecting, forming acute angle = 2
2. - Interocellar distance between hind ocelli equal to or slightly less than ocellocular distance = 3
3. - T3 posterior margin slightly concave, straight or convex, with or without slight to moderately developed swelling and saddle preceding pit row viewed in profile = 4
4. - T2 medially about 2.5x as long as flagellomere F1 and 0.6x as long as broad or less; female T3 apical margin straight or slightly concave (Fig. 94); body usually longer than 3.5mm long = Species sagmatis Bohart 1982
Descriptions: (copied from the above key)
Hosts: A large number of Megachilid species [Bees] have been recorded as hosts for sagmatis, including various genera, mostly in the Tribe Osmiini.
Discussion: Similar to sonorensis, sagmatis differs in having close fine punctation on T2, giving it a dull granular appearance. T3 in profile is slightly saddled in males and distinctly so in females, without a transverse bulge behind the saddle and the apical margin is nearly straight to very slightly concave in females.
Distribution: This Cuckoo Wasp has been reported from central Oregon and Idaho, throughout California, Nevada, Utah, Arizona, parts of Colorado and New Mexico, western Texas and northern Mexico.

Images of this individual: tag all
Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female Cuckoo Wasp with Dark Belly - Chrysura sagmatis - female

Moved
Moved from Chrysura.

Moved
Moved from Chrysidinae.

Moved
Moved from ID Request.