FEMALE—Length 7 mm.; head and thorax greenish, clypeus becoming more blackish, abdomen blackish but with metallic greenish tints, legs blackish, becoming somewhat ferruginous apically: head slightly broader than long; eyes slightly converging below; clypeus rather strongly protuberant, projecting slightly below suborbital line; cheeks very slightly broader than eyes; lateral ocelli somewhat nearer margin of vertex than to eyes; punctures in general quite deep and distinct, rather coarse but close on upper part of face, becoming more sparse below, finer and rather indistinct on cheeks, close and rather fine but not crowded on dorsum of thorax, indistinct on the shining pleura, quite close and fine on the abdominal terga; dorsal area of propodeum distinctly striate laterally, becoming finely rugoso-striate medially; wings nearly hyaline, veins and stigma yellowish; tegulae yellowish anteriorly, more ferruginous posteriorly; hind basitibial plate triangular, pointed apically; apical margins of abdominal terga becoming reddened, apical fasciae pale yellowish, thin and subinterrupted medially on basal tergum, but entire on the others. |
MALE—Length 7 mm.; general body color greenish on head and thorax, abdomen somewhat darker but with strong green tints; head slightly longer than broad, slightly narrower below, eyes slightly convergent; mandibles, labrum, and apical third of clypeus yellow, the clypeus strongly protuberant, projecting considerably below suborbital line; cheeks subequal to eyes in width; space between lateral ocelli subequal to that between ocelli and eyes, that between ocelli and margin of vertex slightly less; basal segment of flagellum rather strongly yellowish, about half the length of the second and following segments; puncturation in general deep and distinct, rather fine and close but not crowded on upper part of face and dorsum of thorax, becoming quite sparse on lower portion of face, clypeus, and on cheeks below, pleura being obscurely rugoso-punctate, and abdominal terga shining between minute, deep and distinct punctures; disc of propodeum finely rugoso-striate medially, becoming distinctly striate laterally; wings hyaline, veins and stigma testaceous; tegulae yellowish-hyaline anteriorly, becoming more ferruginous posteriorly; coxae blackish, trochanters and femora ferruginous, tibiae ferruginous except for a narrow, outer, yellowish stripe, tarsi yellowish; apical abdominal fasciae whitish but usually rather indistinct; apical margin of sternum 5 broadly incurved, 6 with a median pit from which a narrow groove approaches the straight apical margin; gonostyli double, consisting of a broad hatchet-shaped dorsal lobe and a much narrower ventral lobe, these distinct on apex of the gonocoxite, ventral lobe with a pair of inner tufts of setae.
DISTRIBUTION—Nova Scotia to North Dakota, South to Florida and Texas, from March to October.
FLOWER RECORDS—Althaea, Antenneria, Apocynum, Aster, Barbarea, Berteroa, Brassica, Cerastium, Chrysanthemum, Cirsium, Clematis, Epilobium, Fagopyrum, Fragaria, Houstonia, Hydrangea, Leontodon, Lotus, Malus, Melilotus, Potentiila, Prunus, Rhus, Rubus, Salix, Salvia, Scilla, Solidago, Taraxacum, and Trifolium. This species (as Seladonia fasciata) is recorded by Robertson (1929) in the following additional genera: Abutilon, Amelanchier, Amorpha, Anemonella, Anthemis, Arabis, Asclepias, Blephilia, Boltonia, Camassia, Capsella, Cardamine, Ceanothus, Cerastium, Cercis, Cicuta, Claytonia, Coreopsis, Cornus, Crataegus, Cryptotaenia, Dianthera, Ellisia, Erigenia, Erigeron, Eryngium, Erythronium, Eupatorium, Euphorbia, Geum, Gnaphalium, Helenium, Helianthus, Heracleum, Isopyrum, Krigia, Lappula, Leonurus, Lepidium, Lippia, Lobelia, Ludwigia, Lycopus, Lythrum, Malva, Mollugo, Monarda, Nepeta, Oenothera, Osmorrhiza, Oxalis, Parthenium, Pastinaca, Petalostemon, Phytolacco, Polygonum, Polytaenia, Prunella, Psoralea, Pycnanthemum, Radicula, Ranunculus, Rhamnus, Rudbeckia, Scrophularia, Sisymbrium, Sisyrinchium, Sium, Specularia, Staphylea, Stellaria, Symphoricurpus, Taenidia, Tradescantia, Verbena, Veronica, Viola and Zizia.