112 PROCEEDINGS OF THE NATIONAL MUSEUM vol. n? 



Micromus nesoticus Navds, Brooklyn Ent. Soc, vol. 9, p. 16, fig. 3, 1914. 

 Pseudomicromus subanticus. — Nakahara, Mushi, vol. 34, p. 32, figs. 62-64, 1960. 



One 9, Mexico at Brownsville, Tex., Gateway Bridge, Mar. 9, 1937, 

 in alcohol. This specimen was determined by A. B. Gurney as 

 "Micromus subanticus (Walker)." 



Pseudomicromus variolosus (Hagen) 



Micromus variolosus Hagen, Proc. Boston Soc. Nat. Hist., vol. 23, p. 284, 1886. — 

 Carpenter, Proc. Amer. Acad. Arts Sci., vol. 74, p. 251, fig. 54, pi. 2, fig. 21, 

 1940. 



Pseudomicromus variolosus. — 'Nakahara, Mushi, vol. 34, p. 32, 1960. 



One 9, Mexico, May 12, 1943, on parsley, determined as "Micromus 

 variolosus" by H. Townes. 



Pseudomicromus fuscatus, new species 



Plate 1 (Fig. 2) 



Holotype 9, Real de Arriba, Temescaltepec, Mexico, May 23, 

 1933 (H. E. Hinton and R. L. Usinger). Right wings mounted dry 

 on a slide, USNM type 66866. 



Length of body 6.5 mm.; length of forewing 8.5 mm.; width 2.5 

 mm. ; length of hindwing 7 mm. 



Head, thorax, and abdomen nearly uniformly very dark grayish 

 brown, almost blackish; antennae nearly black; legs slightly paler. 



Forewing very slender, produced into subacute apex; membrane 

 unspotted, almost uniformly tinged with light brown, slightly more 

 intensely toward apical and hindmarginal areas and in the narrow 

 mediocubital cell; pterostigmatic area more brownish; venation 

 wholly dark brown. Four or five branches to radius; M3+4 and Cui 

 connected by a very short crossvein; five or six crossveins to inner 

 and seven to outer gradate series, these crossveins being separate 

 from each other by more than their length ; radius, two gradates, and 

 outer margin of the wing nearly parallel and about the same distance 

 apart. Hindwing hyaline, slightly brownish toward apex, with 

 brownish pterostigmatic area; veins, including gradate crossveins, all 

 brownish; M3+4 not running into Cui. 



The large size, narrow forewing with subacute apex, and almost 

 uniformly brownish membrane form a combination of characters 

 that readily distinguishes this species. I tentatively place it in the 

 genus Pseudomicromus on the assumption that it may be related to 

 subanticus and variolosus, but examination of male genitalia is required 

 to confirm this generic designation. 



