. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 734 '735 737 Figs. 733-737. Acalyptrate Diptera, Larvae 733. Ephydra, side view (Jones) Ephydridse. 734. Agromyza, side view (Frost) Agromyzidse. 735. Drosophila, dorsal view (Banks) Drosophilidae. 736. Cryptochaetum, side view (Smith and Compere) Cryptochsetidae. 737. Scaptomyza, side view (Frost) Drosophilidae. 59. Spiracular plates on black tubercles; lateral fusiform areas rather weak though distinct; rather slender larvae. (Fig. 732 E, Trit6xa) ORTALID2E Spiracular plates barely if at all elevated; lateral fusifo
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 734 '735 737 Figs. 733-737. Acalyptrate Diptera, Larvae 733. Ephydra, side view (Jones) Ephydridse. 734. Agromyza, side view (Frost) Agromyzidse. 735. Drosophila, dorsal view (Banks) Drosophilidae. 736. Cryptochaetum, side view (Smith and Compere) Cryptochsetidae. 737. Scaptomyza, side view (Frost) Drosophilidae. 59. Spiracular plates on black tubercles; lateral fusiform areas rather weak though distinct; rather slender larvae. (Fig. 732 E, Trit6xa) ORTALID2E Spiracular plates barely if at all elevated; lateral fusiform areas indistinct; spiracular plates often contiguous or nearly so, slits long and subparallel, no button TR KEY TO THE PUPAE OF THE PRINCIPAL FAMILIES OF DIPTERA l Pupa free, not enclosed within the indurated last larval moult, or if so the head is distinct as in the larva, or the puparium is slightly flattened dorso-ventrally, its texture leathery, not chitinous, and the anterior respiratory organs not distinguish- able; adult, or pupa, emerging through a rectangular, T-shaped split on dorsum of larval skin (see Fig. 707) 2 1 Based largely on Malloch: Bull. 111. State Lab. Nat. Hist., 12, art. 3 (1917).. 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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