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.