Kansas University quarterly . on the upper side, there is a slender, deep groove, forming,when inclosed within the paraglossae, a nearly perfect tube. Thepalpifers are evidently more functional here than in Apiocera, thoughit is difficult to say what that function is, as they are much shorterthan the paraglossae. They may serve as a support for the basalmembranous portion of the galea. WILLISTON: APIOCERID^. 113 MYDAID^. In Mydas, and probably in all those species with but two posteriorcells between the forked cell and the posterior margin of the wing, themouth-parts are relatively small, the
Kansas University quarterly . on the upper side, there is a slender, deep groove, forming,when inclosed within the paraglossae, a nearly perfect tube. Thepalpifers are evidently more functional here than in Apiocera, thoughit is difficult to say what that function is, as they are much shorterthan the paraglossae. They may serve as a support for the basalmembranous portion of the galea. WILLISTON: APIOCERID^. 113 MYDAID^. In Mydas, and probably in all those species with but two posteriorcells between the forked cell and the posterior margin of the wing, themouth-parts are relatively small, the proboscis short, and the palpiextremely rudimentary. On the other hand, in the three known gen-era with three posterior cells behind the forked cell, Diochlistus,Triclonus {Hamnophand) and Mitrodetus, the proboscis is more orless elongate, and, in one form at least, has well-developed palpi. InMydas, there is a slight, wart-like protuberance from the basal plate,which probably represents the palpus. From its base, the short,.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherlawre, bookyear1892
