NEOTROPICAL HEMEROBIIDAE — NAKAHARA 113 



Genus Ameromicromus Nakahara 

 Anieromicromus posticus (Walker) 



Heinerobius posticus Walker, List Neuroptera Brit. Mus., pt. 2, p. 283, 1853. 

 Micromus insipidus Hagen, Smithsonian Misc. Coll., vol. 4, art. 1, p. 199, 1861. 

 Micromus sohrinus Hagen, loc. cit. 

 Micromus posticus. — Banks, Trans. Amer. Ent. See, vol. 32, p. 45, 1905. — Carpenter, 



Proc. Amer. Acad. Arts Sci., vol. 74, p. 248, fig. 51, 1940. 

 Ameromicromus posticus. — Nakahara, Mushi, vol. 34, p. 33, figs. 68-70, 1960. 



One d^ and 1 9, Tamazunchale, San Luis Potosi, Mexico (G. E. 

 Bohart); 1 cf, 26 miles east of Ciudad del Maiz, San Luis Potosi, 

 Mexico (H. B. Leech). 



I am not aware of any previous record from Mexico of this common 

 Nearctic species. 



Genus Nusalala Navds 

 Nusalala colombiensis (Banks) 



Boriomyia colombiensis Banks, Proc. Ent. Soc. Washington, vol. 12, p. 157, 1910. 

 Nusalala colombiensis. — Kimmins, Ann. Mag. Nat. Hist., ser. 10, vol. 17, p. 576, 

 1936. 



One 9 (syntype), San Antonio, 2000 m., western Colombia (Fassl), 

 determined by Sophy Parfin as Nusalala colombiensis (Banks). 



The forewing is distinctively marked but the specimen before me 

 is discolored by adherent extraneous matter. 



Nusalala kriigeri, new species 



Figure 2; Plate 1 (Fig. 3) 



Holotype cf, Cordoba, Mexico, Jan. 1, 1941 (G. E. Bohart). 

 Right wings (dry) and dissected parts of genitalia (in balsam) mounted 

 on two slides, USNM type 66867. 



Face fulvous, with a large black spot in middle of frons; brownish 

 around antennal socket and continued to vertex; palpi and antennae 

 fulvous. Thorax fulvous, variegated with fuscous above. Legs pale 

 fulvous, front femur with a brownish band distally, front and middle 

 tibia marked with brownish band proximally as well as distally, and 

 hindtibia marked with brown only distally. Abdomen fulvous. 



Forewing 10 mm. in length; membrane very slightly tinged with 

 pale brownish, covered with numerous fine and short brownish striae. 

 Venation mostly brownish ; outer gradates fuscous black and narrowly 

 margined with brown; middle gradates, first branch of radius beyond 

 middle and first branch of Cui also fuscous black and margined with 

 brown; tiny round or oblong spots on these gradate crossveins; inner 

 gradate crossveins wholly very pale. Costal area very narrow at 

 base, but humeral crossvein recurrent with distinct branches; many 



