294 



PROCEEDINGS OF THE NATIONAL MUSEUM 



The largest specimen I have seen was a female from Costa Rica 

 whose length was 9 mm. and whose wing length was 10 mm. The 

 smallest specimen seen was a female from Petersham, Mass., which 

 measm-ed only 2.5 mm. in length. 



Ogcodes {Ogcodes) dispar (Macquart) 



Plate figures 33, 35 



Henops dispar IMacquart, Dipt. Exot., Supp., vol. 5, p. 67, pi. 2, fig. 12, 1855. 



Ogcodes dispar, Cole, Trans. Amer. Ent. Soc, vol. 45, p. 66, pi. 14, fig. 39, 1919. — 

 Cole, et al., Proc. Ent. Soc. Washington, vol. 26, p. 182, 1924.— Sabrosky, 

 Amer. Mid. Nat., vol. 31, p. 390, 1944; Amer. Mid. Nat., vol. 39, p. 412, 

 1948.— Farr, Bull. Brooklyn Ent. Soc, vol. 48, p. 39, 1953. 



Oncodes dispar, Champlain and KnuU, Ent. News, vol. 34, p. 211, 1923. 



Oncodes viliatus Johnson, Psyche, vol. 30, p. 50, 1923. 



Ogcodes vittatus, Sabrosky, Amer. Mid. Nat., vol. 31, p. 391, 1944. 



Diagnosis: Species of group v with typical posterior tergal fasciae 

 (fig. 29), but usually more yellow or brownish j^ellow than in most 

 species; spiracular area much darker than siurounding ground color; 

 thorax yellow or dark orange in ground color, with or without one 

 to three dark vittae; venation as in plate 3, figure 11; aedeagus as 

 in plate 7, figure 35; ejaculatory apodeme (pi. 6, fig. 33) about as in 

 plate 13, figure 102 for pallidipennis. 



Type: cf and 9, on the same pin, Baltimore, Md. (Museum 

 National d'Histoire Naturelle, Paris). 



Distribution: This is a -widespread but rather uncommon species 

 which ranges throughout eastern North America, north to Quebec 



Figure 8. — Distribution of Ogcodes dispar (Macquart) in the United States. 



