no. 3649 LEPTOFERONIA — HACKER 27 



Kemarks. — The aedeagus of trinitensis resembles that of lobatus 

 more closely than those of the other species in the fuchsi group. 

 Otherwise trinitensis does not appear very similar to lobatus. It 

 differs from mattolensis in the following pronotal characteristics: 

 longitudinal impressions sharper, anterior angles less prominent, 

 sides sinuate well before the prominent hind angles (rather like pumilus 

 willamettensis) . 



13. Pterostichus {Leptoferonia) humilis Casey 



Figures 13, 37, 41 



Pterostichus humilis Casey, 1913, p. 128. — Van Dyke, 1925, p. 75. — Csiki, 1930, 



p. 582.— Hatch, 1936, p. 704. 

 Leptoferonia humilis (Casey). — Casey, 1918, p. 337. — Leng, 1920, p. 56. 

 Leptoferonia larvalis Casey, 1918, p. 337. — Leng, 1920, p. 56. 

 Pterostichus larvalis (Casey). — Van Dyke, 1925, p. 75 [fide synonymy of humilis 



Casey].— Csiki, 1930, p. 582.— Hatch, 1936, p. 704. 



Species description. — Characteristics of fuchsi group plus the 

 following. 



Head. — Frontal impressions nearly straight, not recurved, forming 

 an angle less than 80°. 



Pronotum. — Sides evenly arcuate in middle, oblique in basal third, 

 then sinuate immediately before hind angles; area lateral to shallow 

 longitudinal impressions often flat. 



Elytron. — Humerus and humeral tooth small; side more arcuate 

 than in other species of group except lobatus. 



Ventral surface. — Coarse punctures essentially confined to 

 mesepisternum. 



Legs. — Hind femur somewhat robust, not obtusely angulate; no 

 setae on lateroventral margins of last article of tarsus. 



Sixth abdominal sternum of male (fig. 13). — Two tubercules 

 small, joined by prominent curved carina; apical margin somewhat 

 truncate between tubercules. 



Aedeagus (fig, 13). — Right paramere sharply elbowed. Median 

 lobe not twisted; unsclerotized area large, triangular. 



Length of body. — 6.0 to 8.0 mm. 



Types. — Pterostichus humilis, male, USNM!; Leptoferonia larvalis, 

 female, USNM! 



Type-localities. — Hoopa Valley, Humboldt County, Calif. 



Specimens examined. — 151. 



Distribution (fig. 37). — From seven miles south of Gold Beach, 

 Curry County, Oreg., south to Weott, Humboldt County, Calif., 

 and to the elevation of 3100 feet. It is sympatric with fenyesi or 

 cochlearis over most of its range. 



