Proceedings of the United States National Museum . a. The dorsal part of the epistoma is very faintly sclerotized; thepleurostoma is well sclerotized and has a lightly sclerotized lateralexpansion; the hypostoma is well sclerotized and has a lightlysclerotized posterior expansion; the hypostomal spur is well sclerotized;the stipital sclerite is V-shaped with its lateral part expanded andcurved dorsally; the labial sclerite is similar in shape to that of manyEphialtini, but there are no lobes on the ventral surface; on eachmaxillary and labial palp there are two sensilla, both round and onesmal
Proceedings of the United States National Museum . a. The dorsal part of the epistoma is very faintly sclerotized; thepleurostoma is well sclerotized and has a lightly sclerotized lateralexpansion; the hypostoma is well sclerotized and has a lightlysclerotized posterior expansion; the hypostomal spur is well sclerotized;the stipital sclerite is V-shaped with its lateral part expanded andcurved dorsally; the labial sclerite is similar in shape to that of manyEphialtini, but there are no lobes on the ventral surface; on eachmaxillary and labial palp there are two sensilla, both round and onesmaller than the other; the labral sclerite is distinctive with eachlateral part bearing a quadrate-shaped expansion and the median(dorsal) part being unsclerotized except for a small, lightly sclerotizedplate; the antenna is papilliform; the atrium of the spiracle is oval inshape and the closing apparatus is thick-walled and situated close tothe atrium; the skin has setae of moderate size but no spines. 414 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no. / - Figure 9.—Pimplinae, head sclerites: a, Theronia atalantae (Poda) (Theronlini); b, LahenagrallatoT (Say) (Labenini). (1, antenna; 2, spiracle; 3, skin.) ICHNEUMONID FINAL INSTAR LARVAE—SHORT 415 Tribe Xoridini Figure 10a Species of this tribe parasitize wood-boring Coleoptera. Xorides insularis (Cresson) and X. rileyi (Ashmead) (fig. 10a) havebeen examined. In the genus Xorides the dorsal part of the epistoma is not scle-rotized, but the pleurostoma, hypostoma, hypostomal spur, andstipital sclerite are well sclerotized; the labial sclerite is roughlytriangular in shape; the maxillary and labial palps each bear twosensilla, one round and one cresccntic in shape; the labral scleritein both species examined does not have the dorsal part sclerotizedand each lateral part consists of two sclerotic bands which join ven-trally; the mandible is distinctive with a broad blade bearing two rowsof large teeth on the dorsal surface; the ant
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
