838 



LXXXI, Figs. 6 and 7), lateral cephalic thorns as in Figure 4, Plate 

 LXXXII. Thorax differs from that of notatiis in having near the 

 base of the wing sheath, in longitudinal line with the bifid tubercle at 

 base of posterior leg sheath (Fig. 5), a sharp-poinled tubercle, and 

 midway from base to apex of wing case, on its median line, 2 small 

 wartlike protuberances on a common base. Abdominal spiracles c- 

 shaped, very similar to those of Mydas davatus, the open side directed 

 cephalad ; the abdominal armature (Fig. 20) similar to that of Asilus 

 notatiis, differing noticeably only on the apical two segments, the 

 penultimate segment in vcrtehratiis having strong thorns on dorsum 

 as on other segments, while in notatiis there are only hairs similar to 

 those of the ventral segments; the difference in the apical segments of 

 the two species is shown in Figure 14, Plate LXXXI, and Figure 2, 

 Plate LXXXII. 



The pupa from which the above description was drawn resulted 

 from a larva obtained at Havana, 111., April 24, 1905, and the imago 

 emerged July 24, 1905. 



The larva is predaceous, feeding upon the larvae of Lachnostcrna, 

 and the species is distributed throughout the entire state, though not 

 very common in most localities. 



Deromyia winthemi Wiedemann 



Dasypogon winthemi Wiedemann, Dipt. Exot., 1821, p. 223. 



Diogmites miselliis Loew, Berl. Ent. Zeitschr., 1866, p. 22. 



Dcromyia winthemi Van der Wulp, Tijdsch. v. Ent., Vol. 25, 1883, p. 93. 



Pupa. — Length, 20-25 '^^'^i- Brownish yellow, distinctly shining; 

 thorns dark brown. Upper pair of cephalic thorns directed forward 

 and curved slightly downward, distance between them distinctly 

 greater than that between them and upper one of the 3 lateral thorns ; 

 lateral thorns as in Figure 16, Plate LXXX, the lower one without 

 basal projection. Prothoracic spiracle reniform apically, distinctly 

 elevated ; a distinct wartlike swelling on disc of thorax just above 

 wing base ; the pair of thorns in front of wing base on lateral margin 

 of disc of thorax very long, curved backward at their middle (Fig. 

 14) ; wing cases without central protuberances, their apices in vertical 

 line with second abdominal spiracle and much proximad of apices of 

 sheaths of fore legs. Abdomen with transverse rugae except on por- 

 tion of first segment anterior to the transverse series of thorns, where 

 the rugae are longitudinal ; armature of abdomen rather variable, nor- 

 mally as follows : first segment with a transverse series of stout 

 thorns near anterior margin, which are broadest at middle, stand up- 



