. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 56 bulletin: museum of comparative zoology Tryphoninae. This subfamily is not very abundantly represented in the Florissant fauna, although I have recognized species belonging to six genera, all of them, modern and occurring in this same region at the present day. These are Mesoleptus, Tryphon, Orthocentrus, Camerotops, Exochus, and Tylecomnus. According to Brischke ('86) Mesoleptus and Tryphon occur in Baltic Amber and Scudder ('90) has described an Eclytus from the Oligocene of Green River, Wyoming. Bassus has been
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 56 bulletin: museum of comparative zoology Tryphoninae. This subfamily is not very abundantly represented in the Florissant fauna, although I have recognized species belonging to six genera, all of them, modern and occurring in this same region at the present day. These are Mesoleptus, Tryphon, Orthocentrus, Camerotops, Exochus, and Tylecomnus. According to Brischke ('86) Mesoleptus and Tryphon occur in Baltic Amber and Scudder ('90) has described an Eclytus from the Oligocene of Green River, Wyoming. Bassus has been said by Kefer- stein ('34) to occur in Baltic Amber. Mesoleptus Gravenhorst. Key to the Florissant species of Mesoleptus. Areolet open M. apertus, sp. nov. Areolet closed M. exstirpatus, sp. nov. Mesoleptus apertus, sp. nov. (Fig. 41.) Female. Length 5 mm. Body black or dark colored, the apical segments of the abdomen brownish; wings slightly infuscated. Head, thorax, and first abdominal segment smooth and highly polished. An- tennae moderately slender, their apices not preserved in the type specimen; basal flagellar joints from two and one-half to four times as long as thick, those toward the apex somewhat transverse. Mesonotum without furrows. Scutellum strongly convex, with a large, broad groove at its base; metanotum com- pletely, very regularly and distinctly areolated, its sur- face polished. Abdominal petiole slightly shorter than the metathorax, with two widely separated longitudinal discal carinae. Abdomen suddenly widened behind the petiole, oval in shape. Ovipositor one-half as long as the abdo-. Fig. 41.— Mesoleptus apertus, sp. nov. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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