Classification Of The Ichneumon Flies

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1900 edition. Excerpt: ...the middle of the discoidal nervure. (859) Delocarpa Forster. 17. Vertex concave; thorax compressed laterally (860) Dipiesta Forster. Vertex convex; thorax not compressed laterally (861) AspUota Forster. 18. Second discoidal cell open; marginal cell closed before the apex of the wing. (862) Heterokxis Forster. Second discoidal cell closed; marginal cell closed at the apex of the wing. (863) Grammospila Forster. Subfamily III. DCNTTSHSTSC. 1862. Daenusoidx, Family XXVI, Forster, Verh. d. Naturh. Ver. pr. Rheinl., XIX, pp. 229 and 273. 1885. Dacnusides Marshall, Trans. Ent. Soc. Lond., p. 11. 1887. Dacnusin.v. Subfamily, Cresson, Syn. Hym. North America, p. 63. 1888. Dacnusidx, Tribe XXIV, Marshall, Species des Hym. des Braconides, I, p. 67. 1900. Dacnusinx, Subfamily III, Ashmead, Smith's Insects of New Jersey, p. 586. The insects falling in this subfamily have the same habits as the Alysiinc e and exhibit scarcely any structural difference; the only character yet pointed out to separate them from the preceding being the difference of venation in the front wings. The Dacnusinc e have only two cubital cells while the Alysiina; have three, except in one or two cases where the first transverse cubitus is absent, so that the student must be careful not to place these in this subfamily. In all genuine Dacnusines the first transverse cvbiUis is always present. He must also bear in mind that there are no apterous females in this group. Twenty-five genera have been recognized, separable as follows: TABLE OP GENERA. First cubital and first discoidal cells separated, distinct 2 First cubital and first discoidal cells confluent (.864) Aphonia Forster. 2. Abdomen not strongly rugulose; segments 2 and 3 not connate, flexible; post scutellum normal 3...