26 PROCEEDINGS OF THE NATIONAL MUSEUM vol. ra 



12. Pterostichus (Leptqferonia) trinitensis, new species 



Figures 12, 37, 41 



Holotype male. — Characteristics oifuchsi group plus the following. 



Head. — Frontal impressions curving, forming an angle of some- 

 what less than 80°, not recurving posteriorly. 



Pronotum. — Sides broadly sinuate, then parallel before rectangular 

 hind angles; longitudinal impressions fairly sharp; base not strongly 

 bisinuate, making hind angles more prominent than in other species 

 of group. 



Elytron. — Humeral tooth small. 



Legs. — Hind femur not obtusely angulate; no setae on ventro- 

 lateral margins of last article of tarsus. 



Sixth abdominal sternum of male (fig. 12). — Apical margin 

 evenly rounded; strong carina joining the three tubercules; right 

 tubercule nearly obsolete; middle and left tubercules only slightly 

 prominent. 



Aedeagus (fig. 12). — Right paramere broad, narrowed laterally 

 in about middle; basal portion concave where left paramere rests 

 against it. Median lobe stout, twisted, but not as abruptly as in 

 lobatus; narrow tip curved to left; unsclerotized area large. 



Length of body. — 7.5 mm. 



Allotype female. — Same as holotype except for usual female 

 differences. Other specimens range in length from 7.0 to 9.0 mm. 



Type.— USNM 69605. 



Type-locality. — Eight miles northeast of Zenia, Trinity County, 

 Calif. 



Specimens examined. — 95. 



Distribution (fig. 37). — Holotype, male, and allotype, female, 

 8 miles northeast of Zenia, T. 2 S, R. 6 E, Humboldt meridian, 

 elev. 3500 ft., Trinity County, Calif., July 1, 1964, H. A. Hacker. 

 Also the following paratypes: 2 males, 3 females, same data as holo- 

 type; 3 males, 2 females, 16 miles northeast of Zenia, T. 2 S, R. 7 E, 

 elev. 3400 ft.; 1 male, 1 female, 4 miles northeast of Zenia, elev. 

 4000 ft.; 1 male, 1 female, 3 miles northeast of Zenia; 4 males, 7 miles 

 southeast of Zenia, T. 4 S, R. 6 E, elev. 3100 ft. Other specimens 

 were collected from as far south as five miles south of Willits, Mendo- 

 cino County, as far east as Plaskett Meadows, Glenn County, and 

 from elevations between 300 and 6500 ft. This species is found to 

 the east of the redwood belt in woods of Pseudotsuga menziesii (Mirb.) 

 Franco with Libocedrus decurrens Torrey and Pinus lambertiana 

 Douglas or various Abies at higher elevations. Specimens from eastern 

 Mendocino and western Glenn Counties were collected too late to 

 be shown on the distribution maps. 



