76 PROCEEDIXGS OF THE NATIONAL MUSEUM vol. 93 



Exorista confinis (Fallen) Rondani, Dipterologiae italicae prodromus, vol. 3, 

 p. 143, 1859. — Bezzi and Stein, Katalog der pnliiarktischen Dipteren, vol. 3, 

 p. 241, 1907.— Baer, Zeitschr. Angew. Ent., vol. 7, p. 147 (113), 1921.— 

 aUlleb. Arch. Naturg., vol. 88, p. 125, pi. Ill, 1022.— Stein, Arch. Naturg., 

 Abt. A. Heft. (5, p. 7.">, 1924. — Thompson, Ann. Parasitol., Humaine et 

 Compar., vol. 4, p. 216, figs. 6, 18, 1920. — Lundbeck, Diptera Danica, pt. 7, 

 p. 312, 1i:27.- Baranoff, Encycl. Ent. Diptera, vol. 4. p. 36, 1927.— Wain 

 weight. Trans. Ent. Sue. London, 1928, p. 185. 



The reason why this species has been commonly reported as occur- 

 ring in North America is that it has been confused with Aplomya 

 theelarum. Townsend has expressed the opinion that A. con-finis does 

 not occur in North America. The writer considers that this is an- 

 other example of the resemblance of species between the Nearctic and 

 Palearctic realms. 



Admittedly there is a paucity of characters upon which the separa- 

 tion of Aplomya confinis and A. theelarum is based. Other than 

 the difference cited in the key, there appear to be additional small 

 differences between the two species. Owing to the scarcity of Euro- 

 pean specimens, it is difficult to evaluate the systematic worth of the 

 noted differences. 



Male with ten frontal bristles descending to middle of parafacials; 

 facial ridge bristly one-fourth in male, one-fifth in female; gena one- 

 seventh eye height in female; palpus black, brownish toward tip. 

 Third vein with three bristles at base. A decidedly larger fly than 

 theelarum. 



Distribution. — Europe from middle Scandinavia and Finland down 

 into Africa. 



Hosts. — Bezzi and Stein, Baer, and Lundbeck list Aporia crataegi 

 (Linnaeus); Thecla ilicis (Esper), Zephyrus qucrcus (Linnaeus), 

 Callophrys rubi (Linnaeus), Tephrodystia sp., and Rhyparia pur- 

 purata (Linnaeus). 



Remarks. — Comments based on an examination of one male col- 

 lected on July 15 at Rambouillet, France, by Villeneuve, and one 

 female collected at Kelenvoelgy, Hungary, September G, 1927, by 

 Muesebeck. 



Lundbeck stated that the palpi of confinis were "yellow, brownish 

 toward the base." Baer and Stein called the palpi of their speci- 

 mens black. 



The species is oviparous, depositing an oval egg, flattened below, 

 on the skin of the host. 



3. APLOMYA THECLARUM (Scudder), new combination 



Tachina theclarum Scudder, Can. Ent., vol. 19, p. 166, 1887. 



Exorista theelarum (Scudder) Wiluston, Scudder's Butterflies of Eastern United 



States and Canada, vol. 3, p. 1920, fig. 17, 19, 1889 — Townsend, Trans. 



Ainer. Ent. Soc, vol. 22, p. 7."., 1895; Psyche, vol. 7, p. 331), 1896. 



