SMICRONYX WEEVILS—ANDERSON 27 
distinctive enough to justify placing them in “groups” by themselves, 
and therefore they are treated here as a single group. 
Map 2 gives the distribution of this group. 
Map 2.—Distribution of the specimens examined of the sculpticollis group of Smicronyx. 
A, S. apionides; HH, S. perfidus; OC, S. atratus; @, S. sculpticollis; A, S. congestus; ©, 
S. seriatus; #, S. halophilus; A, S. tychoides; O, S. interruptus; @, S. vestitus. 
Key to Species of the Smicronyx sculpticollis Group 
1. Body surface, including legs, entirely black; all scales white. . ..... 2 
Body surface never entirely black, some part or parts reddish or brownish; 
scalesineverientirely white MUS sella Weds Se deh eal aac td ERS tS 
2. Elytra covered with scattered patches of broad scales; surface of prothorax 
appearing strongly pebbled. . . . . . . . S.apionides Casey (p. 230) 
Elytra thinly covered with linear scales except for a few broad scales at bases 
of third intervals; surface of prothorax rough but not pebbled. 
S. seriatus LeConte (p. 228) 
3. Femora always reddish, their bases dark; scales of elytra (of all species but 
S. vestitus LeConte) in bands, patches, or vittae. .......2.2..4 
Femora always some shade of brown, never reddish; elytral scales unicolorous 
anavevienlyadis tributed: a ws us; le ARG a ak ail a) ney of ce BOE bere $5, 0 
4. Surface of prothorax and elytra entirely black or piceous ....... 5 
Elytra and/or prothorax reddish brown or reddish. .......... 7 
5. White elytral scales arranged in broken bands; surface of prothorax smooth 
betweenspunctures|).". 2... s+ - S. atratus Dietz (p. 224) 
White elytral scales arranged in wavy bands; surface of prothorax raised into 
low knobs between punctures. . . . S. interruptus Blatchley (p. 225) 
586455—62——_3 
