NEOTROPICAL HEMEROBIIDAE — NAKAHARA 109 



1 cf , 2 9, and 2 other specimens without abdomen, Socorro Island 

 Mexico, (H. H. Keifer) ; 2 specimens, Pim-a, Peru (R. A. Berry) ; 



2 specimens, Lima, Peru; 4 specimens, Arequipa, Peru. 



This is the most common species of the genus in southern United 

 States and its occurrence in territories farther south is only to be 

 expected. The records from the small islands of Socorro and Clari6n 

 may be noteworthy. 



Sympherobius angustus (Banks) 



Hemerobius angustus Banks, Trans. Amer. Ent. Soc, vol. 30, p. 102, 1904. 

 Sympherobius angustus Banks, ibid., vol. 32, p. 41, 1905. — Carpenter, Proc. 



Amer. Acad. Arts Sci., vol. 74, p. 233, fig. 34, pi. 2, fig. 16, 1940. 

 Sympherobius tristis Nav^, Bull. Brooklyn Ent. Soc, vol. 9, p. 15, fig. 2, 1914. 



One 9, Cuernavaca, Mexico, July 1906 (Wm. Schaus), bearing 

 Banks' label {'' Sympherobius angustus Bks.") ; 1 9, Real de Arriba, 

 Temescaltepec, Mexico (H. E. Hinton and R. L. Usinger) ; 1 specimen 

 without abdomen, 10 miles south of Jalapa, Mexico (G. E. Bohart). 



I refer these specimens to angustus. Forewing 5 mm. in length, very 

 slender with very narrow costal space. Color as well as venational 

 characters are compatible with this determination. 



Sympherobius arizonicus Banks 



Sympherobius arizonicus Banks, Trans. Amer. Ent. Soc, vol. 37, p. 346, 1911. — 

 Carpenter, Proc. Amer. Acad. Arts Sci., vol. 74, p. 234, pi. 2, fig. 14, 1940. 



One 9, 18 miles southeast of Guaymas, Sonora, Mexico (R. Ryck- 

 man, C. Christianson, and R. Lee). 



The very characteristic brown maculation of forewing strongly 

 suggests that the specimen may be arizonicus, which has hitherto been 

 known from the unique female type from Arizona. 



Sympherobius maculipennis Kimmins 



Figure 1; Plate 1 (Fig. 1) 



Sympherobius maculipennis Kimmins, Rev. Soc. Ent. Argentina, vol. 9, p. 189, 

 text fig. 3, pi. fig. 1, 1929. 



One cf, Mendoza (Argentina?), Apr. 13-15, 1921, "feeding on 

 coccus on C. aethiops"; 1 9, Pelotas, Rio Grande do Sul, Brazil, 

 May 10, 1956 (C. Biezanko) ; 3 cf and 1 9, Uruguay near Montevideo, 

 May 24, 1946 (P. A. Berry); 1 9, Verrugas, Lima, Peru, May 19, 1928 

 (R. C. Shannon); 1 cf, in alcohol, Pelotas, BrazU, February 1955 

 (C. Biezanko), determined by S. Parfin as "near Sympherobius maculi- 

 pennis Kimmins." 



K immins figured the lateral view of the abdominal apex of the 

 male without giving any description. The structures shown in solid 



