SMICRONYX WEEVILS—ANDERSON 201 
dorsum, but not on apical portion of venter; median orifice flanked by 
two curved plates, the orificial plates; two struts, the median struts, 
attached at the anterior end of the median lobe, armature of the inter- 
nal sac varying from small spines to heavy sclerites (fig. 48). Spi- 
culum gastrale curved or hooked and/or expanded at anterior end; 
loosely connected with eighth sternum at posterior end (fig. 49). Teg- 
men ring shaped, encircles the median lobe; provided with a cleft dor- 
sal cap piece, which extends posteriorly, and a single ventral strut, 
which extends anteriorly from the tegmen. 
Female genitalia (fig. 102): Ovipositor widest at base, most heavily 
sclerotized at sides, two small styli present at apex; vagina usually 
entirely membranous, narrow near point of attachment with 
ovipositor, widened into a pouch anteriorly; spiculum ventrale (or 
eighth abdominal sternum) divided into two ‘‘arms”’ posteriorly, rod- 
like anteriorly; attached to mantle (eighth abdominal tergum) by a 
membranous connection; apex of mantle usually fringed with fine bris- 
tles. Spermatheca C-shaped, connected with vagina by a long duct 
and provided with an elongate gland, the spermathecal gland. 
Forms 1ncLupEp: A list follows of the subgenera, species groups, 
and species of Smicronyz in America north of Mexico. Page numbers 
refer to the present work; synonyms are given in parentheses following 
the valid name: 
Subgenus Smicronyx Schoenherr (p. fiducialis Casey (p. 234) 
203) halophilus Blatchley (p. 235) 
cinereus group (p. 204) instabilis group (p. 237) 
cinereus Motschulsky (p. 206) defricans Casey (p. 238) 
(=perplexus Dietz) (=nubilus Dietz) 
pacificus, new species (p. 208) (=celaenus Pierce) 
tardus Dietz (p. 209) posticus Dietz (p. 240) 
cuscutiflorae Pierce (p. 211) instabilis Casey (p. 241) 
obscurus, new species (p. 213) silaceus Casey (p. 243) 
mucidus Dietz (p. 215) pusillus Dietz (p. 244) 
(=scalator Dietz) languidulus Dietz (p. 246) 
(=cognatus Dietz) rhodopus Dietz (p. 247) 
sculpticollis group (p. 216) quadrifer group (p. 248) 
tychoides LeConte (p. 218) 
sculpticollis Casey (p. 220) 
(=sagittatus Casey) 
(=gibbirostris Casey) 
atratus Dietz (p. 224) 
interruptus Blatchley (p. 225) 
congestus Casey (p. 226) 
seriatus LeConte (p. 228) 
(=elsegundinis Pierce) 
apionides Casey (p. 230) 
vestitus LeConte (p. 232) 
perfidus Dietz (p. 233) 
586455—62——2 
lutulentus Dietz (p. 249) 
albonotatus, new species (p. 251) 
quadrifer Casey (p. 253) 
intricatus Casey (p. 254) 
lepidus Dietz (p. 256) 
profusus group (p. 257) 
profusus Casey (p. 258) 
spretus group (p. 259) 
spretus Dietz (p. 260) 
Subgenus Pachyphanes Dietz (p. 262) 
amoenus group (p. 262) 
amoenus (Say) (p. 264) 
