. Bulletin of the Department of Agriculture. Agriculture; Agriculture. The larva differs from that of E. rugiceps mainly in the entire absence of anything suggestive of a median double row of modified bristles on the last ventral segment (PL III, F). The surface of the front of the head is sculptured as in E. rugiceps (PL III, A and G). PUPA The pupa of D. trachypygus (PL IV, G) is readily distin- guished from that of E. rugi- ceps by its longer and smoother head and by the form of the mouth parts. The mandibles are much longer and more slen- der than in either E. r-ugiceps or L. gibhosus
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. The larva differs from that of E. rugiceps mainly in the entire absence of anything suggestive of a median double row of modified bristles on the last ventral segment (PL III, F). The surface of the front of the head is sculptured as in E. rugiceps (PL III, A and G). PUPA The pupa of D. trachypygus (PL IV, G) is readily distin- guished from that of E. rugi- ceps by its longer and smoother head and by the form of the mouth parts. The mandibles are much longer and more slen- der than in either E. r-ugiceps or L. gibhosus, and terminate in a short, nearly truncate apex which lies in contact with the sides of the relatively small labrum (fig. 15). The maxil- lary palpi are unusually elon- gate, with an acute apex, and project considerably beyond the general level of the other mouth parts. The postcoxal process of the presternum is more nearly oblique and rather i i ~j- j-i „ •„ t? • Fig. 16.—Dyscmetus trachypygus: Adult, more blunt than m A. rugiceps. (Drawn by Henry Fox). D. trachypygus (fig. 16) may be readily recognized by its tooth- less mandibles and by the form and smoothness of the head. The latter is both longer and wider than in either Euetheola or Ligyrus. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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