Order: Hymenoptera. Section: Terebrantia. Family: Siricidæ, Leach.
Genus. Tremex, Jurine. Sirex, Linn. Drury.
Tremex Columba. Fusca, abdomine nigro lateribus flavo-marginatis alis, nigris. (Long. Corp. 1 unc. 6 lin.)
Syn. Sirex Columba, Linn. Syst. Nat. 2. 929. 2. Fabr. Ent. Syst. 2. 105. 3. Syst. Piez. 49. 3.
Sirex cinctus, Drury, App. vol. 2.
Sirex pensylvanicus, De Geer Mem. 3. pl. 30. f. 13.
Habitat: North America, New York.
Head and thorax brown orange, the former furnished with two jaws. Ocelli distinct. Antennæ 16-jointed, of the length of the thorax, which does not appear separated from the abdomen. Eyes narrow and oblong. Abdomen black, and fringed with yellow; being as broad and thick at the extremity as the middle. Wings dark brown (almost black) and narrow, but not folded. From the upper part of the abdomen, near the middle, issues a tube which covers, like a groove, a rough serrated bristle, being the instrument through which the creature ejects its eggs. Legs brown orange, having a strong tibial spur on each leg.
FORMICA RUBRIPES.
Plate [XXXVIII]. fig. 3.