Pinodytes tehama Peck & Cook, 2011

Peck, Stewart B. & Cook, Joyce, 2011, Systematics, distributions and bionomics of the Catopocerini (eyeless soil fungivore beetles) of North America (Coleoptera: Leiodidae: Catopocerinae) 3077, Zootaxa 3077 (1), pp. 1-118 : 36-37

Pinodytes tehama Peck & Cook , new species

( Figs. 26 , 224 , 241–248 )

Type material. Holotype: male ( UNHC). UNITED STATES. California: Tehama Co., 5 mi SE Manton, Bluff Springs , 2550’, XII-4-1991, D.S. Chandler, sift laurel leaf litter . Paratypes (66). UNITED STATES. California: same data as holotype, 37 ( UNHC) ; Tehama Co., 3miNW Mineral, Hampton Butte , 2.XII.1991, 6000’, D.S. Chandler, sift conifer litter, 3 ( UNHC) ; Tehama Co., 5miSE Manton, Bluff Springs , 1.XII.1987, 2500’, D.S. Chandler, sift rotten oak log, 1 ( UNHC) ; Tehama Co., 5miSE Manton, Bluff Springs , 1.XII.1987, 2500’, D.S. Chandler, sift leaf litter at stream edge, 1 ( UNHC) ; Tehama Co., 5miW Mineral , 6.XII.1987, 4250’, D.S. Chandler, bigleaf maple leaf litter, 1 ( UNHC) ; Tehama Co., 6miSE Manton, Soap Creek , 4.XII.1991, 2350’, D.S. Chandler, sift black oak litter, 1 ( UNHC) ; Tehama Co., 6miSE Manton, Soap Creek , 4.XII.1991, 2350’, D.S. Chandler, sift willow/mixed leaf litter by stream, 10 ( UNHC) ; Tehama Co., 10miSE Manton, Snoqualmie Gulch , 4.XII.1991, 2950’, D.S. Chandler, sift litter by stream, 12 ( UNHC) .

Additional material examined. We examined 100 additional specimens (see Appendix) for a total of 167 specimens.

Distribution. Specimens ( Fig. 224 ) are known from Shasta and Tehama Counties, in northern California, on both sides of the Sacramento River. This is one of the few species which may occur in volcanic soils whee it occurs in southeastern Shasta County and eastern Tehama County, California.

Diagnostic description. Total length 1.10–1.30 mm; greatest width 0.58–0.62 mm. Reddish brown; oval in shape ( Fig. 26 ). Head. With scattered minute punctures and a few larger punctures; shining, with faint reticulate microsculpture posteriorly. Eyes absent. Antenna ( Fig. 241 ) with antennomeres 2 and 3 subequal in length; antennomere 5 wider than 4, longer than 6; antennomere 7 slightly longer but not wider than 8; antennomeres 9 and 10 each with a single sensory vesicle indicated apically by a protruding flange. Pronotum. Finely punctate, punctures separated by 3–4 diameters; shining, with transverse substriate microsculpture. Widest at base, sides curving to narrower apex; apical margin weakly emarginate, basal margin nearly straight; apical angles broadly rounded, basal angles narrowly rounded. Elytra. Finely punctate; punctures in serial rows but striae not impressed; punctures joined by fine transverse strioles. Joined elytra slightly wider than pronotum, widest at base, roundly narrowing to apex. Legs. Protibia ( Fig. 242 ) slender; apex spinose; apical one-half of outer margin with three spines; apical three-fifths of inner margin finely, densely spinose. Mesotibia ( Fig. 243 ) slender; strongly spinose on outer margin and apically, with elongate spine near middle of outer margin; apical one-third of inner margin with smaller spines. Metatibia ( Fig. 244 ) slender, straight; spinose at apex; inner margin with two moderately strong spines on apical one-fourth. Metafemur ( Fig. 244 ) slender. Male protarsomeres ( Fig. 242 ) weakly expanded; bearing elongate setae laterally and thin, broad, colorless phanerae ventrally. Mesotarsomeres without phanerae. Venter. Mesoventrite ( Fig. 248 ) carinate; longitudinal carina with large toothlike expansion near middle; not excavated behind transverse carina. Male genitalia. Median lobe of aedeagus ( Figs. 245, 246 ) broad; apex narrowing, flattened. Internal sac ( Figs. 245, 246 ) with two pairs of elongate, flattened structures; a series of smaller, strongly sclerotized spines visible anterior to base of median lobe when internal sac is inverted. Parameres ( Figs. 245, 246 ) moderately broad with apices flat, deflexed, each bearing two closely spaced setae before apex. Spermatheca. Elongate ( Fig. 247 ), tubular, evenly curved.

Etymology. The name tehama , a noun in apposition, refers to the occurrence of this species in Tehama Co., California.

Figures

FIGURE 224. Distributions of species in the Pinodytes pusio species group in the southwestern United States. P. sequoia, open triangles in the southern Sierra Nevada of central California. P.shasta, closed triangles in Trinity Alps mountains in north western California. P.spinus, solid square, in western foothills of the Sierra Nevada Mountains in northern California. P. tehama, open circles at the northern end of the Central Valley and on both sides of the Sacramento River, California. P. tuolumne, closed circles on the western slope of the Sierra Nevada mountains, Yosemite National Park.

FIGURES 19–27. Pinodytes habitus photos. 19. P.minutus, total length 1.08 mm. 20. P. monterey, total length 1.52 mm. 21. P. parvus, total length 1.22 mm. 22. P. sanjacinto, total length 1.60 mm. 23. P. sequoia, total length 2.92 mm. 24. P.shasta, total

FIGURES 241–248. Pinodytes tehama. 241. Male right antenna, dorsal. 242. Male right protibia and protarsus. 243. Male right mesotibia. 244. Male right metafemur and metatibia. 245. Aedeagus, lateral. 246. Aedeagus, dorsal. 247. Spermatheca. 248. Mesoventrite, lateral. Scale bar = 0.1 mm (Fig. 247), 0.3 mm (Figs. 241–246, 248).