. Annals of the Entomological Society of America. Entomology. 156 An7ials Entomological Society of America [Vol. VI, FEMALES. TABLE OF SPECIES. 1. Ovipositor not longer than abdomen 2 Ovipositor longer than abdomen 3 2. Stigmal club oval brevicaudis Stigmal club elongate physocarpi 3. Front wings marked with a brownish spot adjoining the hind margin of the submarginal vein albifrons Front wing not so marked 4 4. Stigma surrounded by a clouded area nigrovariegatus Stigma not surrounded by a clouded area 5 5. Mesonotum black with an oblong redd^h orange area covering the posterior half of the mi
. Annals of the Entomological Society of America. Entomology. 156 An7ials Entomological Society of America [Vol. VI, FEMALES. TABLE OF SPECIES. 1. Ovipositor not longer than abdomen 2 Ovipositor longer than abdomen 3 2. Stigmal club oval brevicaudis Stigmal club elongate physocarpi 3. Front wings marked with a brownish spot adjoining the hind margin of the submarginal vein albifrons Front wing not so marked 4 4. Stigma surrounded by a clouded area nigrovariegatus Stigma not surrounded by a clouded area 5 5. Mesonotum black with an oblong redd^h orange area covering the posterior half of the middle lobe, the inner angles of the scapulse and axillse and all of scutellum pinus Not so marked 6 6. Black species 7 Yellow species 8 7. Pronotum with two yellow spots tsugae Pronotum black without yellow spots lasiocarpae 8. Axillce yellow; stigmal vein as long as the club is wide spermotrophus Axillae black except inner angle; stigmal vein shorter than the width of the club aculeatus M. flavipes Ash. (1886) was described from males only. Megastigmus brevicaudis Ratzeburg. Megasligmtis brevicaudis Ratzeburg. Ichneum. Forstinsect., Ill, p. 225. 1852. Megastigmus brevicaudis Rodzianko. Comment. Torym., pp. 608-611. 1908. Megastigmus brevicaudis Crosby. Cornell Exp. Sta. Bull., 265, pp. 375-377, Figs. 77-79. 1909. Megastigmus brevicaudis Rohwer. U. S. Bur. Ent., Tech. Bull. 20, pt. VI, p. 159. 1913. Female.—Length, mm.; abdomen, 1 mm.; ovipositor, .7 mm. Face, cheeks and a partial ring around eye yellow. Vertex and occiput very dark brown, nearly black. Vertex finely transversely rugulose. Prothorax yellowish, indistinctly marked with dusky on the sides. Rest of the thorax nearly black with a dull yellowish tinge showing through on the scapulas and scutellum. Antennae brownish yellow, scape and pedicel black above and yellow beneath. Anterior coxas yellow; middle and hind coxse brownish; rest of legs light yellowish. Wings hyaline; stigmal club not surrounded by a clouded
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