Proceedings of the United States National Museum . rator (Gravenhorst) w^as examined. This is a veryisolated species with the larval characters showing no relationshipto those of any other ichneumonid. It is endoparasitic in the sawflyCephus. The lateral parts of the epistoma are very lightly sclerotized andbroad, forming plates on the lateral parts of the clypeus; each pleuro-stoma is lightly sclerotized and bears about five sensilla; there are noother head sclerites: the maxillary and labial palps are represented bysmall sensilla; there is no sclerotized silk press; about 12 sensilla arepres
Proceedings of the United States National Museum . rator (Gravenhorst) w^as examined. This is a veryisolated species with the larval characters showing no relationshipto those of any other ichneumonid. It is endoparasitic in the sawflyCephus. The lateral parts of the epistoma are very lightly sclerotized andbroad, forming plates on the lateral parts of the clypeus; each pleuro-stoma is lightly sclerotized and bears about five sensilla; there are noother head sclerites: the maxillary and labial palps are represented bysmall sensilla; there is no sclerotized silk press; about 12 sensilla arepresent on the labrum; the mandibles are unsclerotized and arewithout teeth; they can be detected in specimens cleared in Fauresfluid, but must be stained in order to be seen clearly; the antenna isdisc-shaped; the spiracle has a long, thin-walled closing apparatuswith a length which is five to sLx times the depth of the atrium; theskin is very smooth with small projections and small setae. 504675—59 6 472 PROCEEDENGS OF THE NATIONAL MUSEUM vol. no. O • 1 mm Figure 44.—MesoleiinaeiEuryproctini, head sclerites: a, Synomelix sp.; b, Polyterusolympiae (Ashmead); c, Ipoctoninus striatus (Davis). (1, antenna; 2, spiracle; 3, skin.) ICHNEUMONID FINAL INSTAR LARVAE—SHORT 473
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
