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Species Chariesterus antennator - Euphorbia Bug

Coreid bug - Chariesterus antennator bug nymph - Chariesterus antennator Euphorbia Bug - top - Chariesterus antennator Euphorbia Bug 01 - Chariesterus antennator Euphorbia Bug 01 - Chariesterus antennator Euphorbia Bug 01 - Chariesterus antennator Euphorbia Bug 01 - Chariesterus antennator Euphorbia Bug 02 - Chariesterus antennator
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Heteroptera (True Bugs)
Family Coreidae (Leaffooted Bugs)
Genus Chariesterus
Species antennator (Euphorbia Bug)
Size
body length to 12 mm
Identification
Elongated, covered with flattened hairs. Sharp spine extends from each rear corner of pronotum.
Range
Eastern United States and southern Ontario, west to Colorado.
More common in Southeast (1).
Food
nymphs and adults feed on spurge (Euphorbia spp.)
Print References
Ruckes, Herbert. 1955. The Genus Chariesterus de Laporte (Heteroptera, Coreidae). American Museum Novitates. 1721: pp. 1-16. 20 figs.
[above reference available in PDF format in Internet References link below]
Slater, p. 57, fig. 87 (1)
Salsbury, p. 99--photo (2)
Internet References
The Genus Chariesterus; PDF doc with descriptions, illustrations, and key to all species of Chariesterus (Herbert Ruckes, courtesy American Museum of Natural History)
Bugs (Hemiptera) of Ojibway live images of nymph and adult, plus common name reference and foodplant (ojibway.ca, Windsor, Ontario)
Works Cited
1.How to Know the True Bugs
By Slater, James A., and Baranowski, Richard M.
2.Insects in Kansas
By Glenn A. Salsbury and Stephan C. White

C.antennator vs. E.galeator
Sorry, I can´t tell the solution of the mystery, but I think most (if not all) of the nymphs on the C.antennator page rather belong to E.galeator. Arguments:

- distinction suggested in "featured creatures" (thanks, Hannah!); all nymphs here have clearly only the 3rd antennal segemnt dilated;
- thickened hind femora, pale hind tibia, curved a little outwards of E.galeator adult reflected in some of the larval pictures;
- strong dissimiliarity in body shape between adult of C.antennator and larvae;
- apparent rareness of C.antennator adults in the guide;
- none of the larvae sits on spurge, given as the preferred hostplant of C.antennator.

regards, Boris

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