NO. 1988. STUDIES OF NORTH AMERICAN WEEVILS— PIERCE. 367 



c^. Abdomen black; front smooth in female, carinate at base in male; elytral 

 interspaces with a faint external rim bordering the strife; prothorax 

 moderately to strongly punctured, medially depressed or sulcate. 



collaris Fabricius. 

 d}. Entirely black, except elytra, head sometimes with red frontal spot. 

 Massachusetts to Kansas and Virginia. Length 4.2-4.7 mm. 



var. nigripes Melsheimer, female. 



(P. Body black, elytra bluish black, legs reddish, head sometimes with 



red frontal spot. Massachusetts to Kansas and Virginia. Length 



3.5-3.7 mm var. fuscipes, new variety, male, female. 



cP. Body black, thorax red, elytra bluish black. Massachusetts to Iowa, 

 Florida and Louisiana. Length 3.5-4.5 mm. 



var. collaris Fabricius, male, female, 

 rf*. Body black; head, thorax, and appendages reddish, elytra bluish black. 



Texas. Length 4 mm var. ruficeps, new variety, male, female. 



c^. Abdomen entirely or in most part reddish testaceous; front sulcate; 

 elytral interspaces slightly convex; prothorax strongly punctured, me- 

 dially depressed or sulcate; body reddish throughout, eyes black, 

 elytra nigrocoeruleus. Alabama to Texas. Length 3.2-4.7 mm. 



^ sulcifrons Gyllenhal. 



a^. Head strongly punctured ; elytral interspaces convex, not wider than the strise; 

 prothorax strongly punctured, medially depressed or sulcate. Arizona. 



punctatus, new species. 

 e^. Entirely black, elytra nigrocoeruleous. Length 4.5 mm. 



var. niger, new variety, female. 

 e^. Black, thorax red, elytra nigrocoeruleous. Length 4 mm. 



var. punctatus, typical variety, female. 

 4. Elytra testaceous or piceous black. 

 /I. Head moderately to strongly punctate; thorax medially depressed; front sul- 

 cate angustatus Gyllenhal. 



fir'. Headand thorax strongly punctate; color uniformly rufotestaceous. Texas. 



Length 4.2 mm var. testaceus, new variety, male. 



g'^. Head and thorax moderately punctate; thorax medially depressed; front 



sulcate; color rufotestaceous, elytra more or less piceous black, Virginia 



to Texas. Length 3.7^.2 mm. .var. angustatus Gyllenhal, male, female. 



/*. Head and thorax finely punctured, front sulcate; color pale testaceous. Texas 



and Arizona. Length 3.2-4 mm pallidus Schaeffer. 



This is one of the most difficult genera in the Rhynchophora to 

 separate into species. The writer has had at hand about 150 indi- 

 viduals representing what appear to be eight distinct species and 

 five additional color variations. The characters available are not as 

 easy to use as the characters in other genera. 



EUGNAMPTUS STRIATUS LeConte. 



This species is characteristic of Florida in this country, being rep- 

 resented from Crescent City and Haulover. It has only been taken 

 in March on a single species of Quercus. 



EUGNAMPTUS PUNCTICEPS LeConte. 



This species is the smallest before the writer. Specimens have 

 been taken at Rosslyn, Virginia; Plummers Island, Maryland; Jack- 

 sonville, Florida; Oak Grove, Alabama; Meridian, Mississippi; Cov- 



