40 H. C. HUCKETT 



Paregle radicum Linnaeus 



1761 Musca radicum Linn. Fauna Suec, p. 454, no. 1840. 



1780 Musca napobrassicae Bjerk. Acta Holm., p. 196. 



1817 Anthomyia brassicae Wied. Zool. Mag., vol. 1, p. 78, no. 27. 



1824 Musca cinerea Fall. p. p. Muse, p. 70, no. 75, 9 . 



1826 Anthomyia pusilla Meig. p. p. Syst. Beschr., vol. 5, p. 151, no. 118. 



1826 Anthomyia stigmatica Meig. Syst. Beschr., vol. 5, p. 167, no. 147. 



1826 Anthomyia spreta Meig. Syst. Beschr., vol. 5, p. 171, no. 151. 



1826 Anthomyia ruficeps Meig. Syst. Beschr., vol. 5, p. 177, no. 162. 



1830 Egle vulgaris Rob.-Desv. Essai Myod., p. 584, no. 1. 



1830 Egle ludibunda Rob.-Desv. Essai Myod., p. 585, no. 2. 



1830 Egle campestris Rob.-Desv. Essai Myod., p. 585, no. 3. 



1835 Anthomyia obliqua Macq. „Hist. Nat. Dipt., vol. 2, p. 342, no. 37. 



1873 Aricia tristicula Holmgr. Ofv. K. Vet.-Akad. Forhandl., vol. 29, part 6, p. 101. 



1883 Aricia diadema Holmgr. Ent. Tidskr., vol. 4, p. 170, no. 27. 

 Records. — Earliest: Glen Head, Long Island, May 1, 1921. Latest: McLean Bogs (near 

 Ithaca), September 11, 1920. 110 specimens: 71 males, 39 females. Figures 40, 85, 132, 

 192, on plates in this memoir. 



Genus Pegomyia Robineau-Desvoidy 



1830 Rob.-Desv. Essai Myod., p. 550, no. 1. Hylemyia p. p. 



1830 Rob.-Desv. Essai Myod., p. 557, no. 3. Nerina p. p. 



1830 Rob.-Desv. Essai Myod., p. 558, no. 4. Adia p. p. 



1830 Rob.-Desv. Essai Myod., p. 559, no. 5. Phorbia p. p. 



1830 Rob.-Desv. Essai Myod., p. 584, no. 14. Egle p. p. 



1830 Rob.-Desv. Essai Myod., p. 598, no. 1. Pegomyia p. p. 



1830 Rob.-Desv. Essai Myod., p. 600, no. 2. Zabia p.p. 



1830 Rob.-Desv. Essai Myod., p. 600, no. 3. Phoraea. 



1830 Rob.-Desv. Essai Myod., p. 602, no. 4. Chlorina. 



1835 Macq. Hist. Nat. Ins. Dipt., vol. 2, p. 323. Chortophila p. p. 



1838 Zett. Ins. Lapp., p. 660. Anthomyza p. p. 



1845 Zett. Dipt. Scand., vol. 4, p. 1371, no. 134. Aricia p. p. 



1864 Lioy. Atti 1st. Veneto, ser. 3, vol. 9, p. 989. Gymnogaster. 



1864 Lioy. Atti 1st. Veneto, ser. 3, vol. 9, p. 990. Botanophila. 



1864 Lioy. Atti 1st. Veneto, ser. 3, vol. 9, p. 990. Triogonostoma. 



1864 Lioy. Atti 1st. Veneto, ser. 3, vol. 9, p. 990. Psilometopia. 



1864 Lioy. Atti 1st. Veneto, ser. 3, vol. 9, p. 991. Erioischia. 



1864 Lioy. Atti 1st. Veneto, ser. 3, vol. 9, p. 991. Stenogaster. 



1906 Stein. Wien. Ent. Ztg., vol. 25, p. 47. 



1911 Schnb. and Dzied. Die Anthomyiden, p. 111. 



1920 Mall. Bui. Brooklyn Ent. Soc, vol. 15, p. 126. Enneastigma Stein. 



The species of Pegomyia may be distinguished according to the follow- 

 ing keys: 



Males 



1. Legs entiiely blackish 2 



Hind tibiae, at least, yellowish or reddish 4 



2. Hind tibia with three anterodorsal bristles; pra exceeding half length of posterior noto- 



pleural bristle; hypopygium large and prominent rubivora Coq. 



Hind tibia with two anterodorsal bristles; pra not exceeding half length of posterior 

 notopleural bristle; hypopygium small and inconspicuous 3 



3. Thorax, when viewed from behind, with three broad black vittae, increasing in width 



cephalad; abdominal vitta interrupted by broad dark incisures along anterior half of 



each tergum dissecta Meig. 



Thorax without such vittae; abdominal vitta uniformly narrow, without incisures. 



littoralis Mall. 



