Vol. XXX I ENTOMOLOGICAL NEWS. 4I 



Ncocorynura, a Genus of Halictine Bees (Hym.)» 



By T. D. A. CocKERELL, Boulder, Colorado. 

 Schrottky proposed the name Ncocoryniira for Cacosoma 

 F. Smith, preoccupied. The species are very numerous in 

 Peru, and adjacent parts of Bolivia and Brazil ; but they also 

 extend as far north as Mexico, and the following form is to 

 be added to that fauna : 



Neocorynura discolor knabiana stibsp. n. 



9. — Length about 8 mm., anterior wing 6.7 (true discolor 9 mm., 

 wing 7.5 mm.) ; first abdominal segment reddish-black, brilliant green 

 at sides and base ; second segment with laterobasal corners bright 

 green ; third with a green basal band, covered with white tomentum. 

 Antennae red at apex. 



Cordoba, Vera Cruz, Mexico, January 20, 1908 (F. Knah), 

 U. S. Nat. Museum. 



Differs from typical N. discolor, as described by Smith, and 

 again (from four examples collected by Salle) by \"achal. in 

 the green base of abdomen. The wings are greyish, with the 

 marginal cell and beyond broadly fuliginous. This is also very 

 near A^. chlorocion (Vachal), but is easily separated by the 

 black face. It is also related to N. ligiiys (A^achal), which 

 Mr. Knab took at Cordoba on the same day. 



The following key separates this from a series of Mexican 

 and Central American specimens now before me, and records 

 some new localities : 



Abdomen elongated, distinctly claviform, segments 2 and 3 green at 

 base; males. (Cordova, Mexico, May 10, L. O. Howard)*, 



N. chlorocion (Vachal) 

 Abdomen ordinary, or scarcely elongated: females i 



1. First abdominal segment with very lajte coarse punctures; marginal 



cell and beyond fuscous (Tabernilla, Canal Zone, Panama, July, 



1907, Aug. Busck) N. cuprifrons (F. Smith) 



First abdominal segment not thus punctured 2 



2. Smaller ; area of metathorax brilliant pale green, 



A', discolor knabiana Ckll. 

 Larger; area of metathorax not thus green... V. lignys (Vachal) 



* One of the A^. chlorocion males carries two stylopids ; this adds a 

 genus to the list of those parasitized by Stylopids. The N. chlorocion 

 have the wings appreciably dusk}^ and the second abdominal segment 

 quite closely punctured, but they are surely this species, which was 

 originally recorded from Orizaba. 



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