Pinodytes fresno Peck and 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 : 25

Pinodytes fresno Peck and Cook , new species

( Figs. 12 , 128–136 )

Type material. Holotype: male ( FMNH). UNITED STATES. California: Fresno Co., Sierra N.F., Tamarack Ridge , 3.4 mi SE Hwy 168, 7500’, 16.V.1976, berl. litter, fir-lodgepole pine for., A. Newton, M. Thayer . Paratypes: (29). UNITED STATES. California: with same data as holotype, 3 ( FMNH); Fresno Co., 15miE Squaw Valley , 26.I.1977, A. Gilbert, Ber. live oak litter, 26 ( CSCA) .

Material examined. We have examined 30 specimens.

Distribution. Specimens ( Fig. 136 ) are known only from Fresno County, on the western side of the Sierra Nevada Mountains, California.

Diagnostic description. Total length 1.28–1.68 mm; greatest width 0.59–0.80 mm. Reddish brown; elongateoval in shape ( Fig. 12 ). Head. Finely, sparsely punctate; a large puncture on each side of apex of stem of epistomal suture; shining; transverse substriate microsculpture on vertex. Antenna ( Fig. 128 ) with antennomeres 2 and 3 subequal in length; antennomere 5 larger than 4 and 6; antennomere 7 longer but not wider than 8; antennomeres 9 and 10 each with a single sensory vesicle indicated apically by a protruding flange. Pronotum. Moderately finely punctate, punctures separated by 2–4 diameters, bearing minute erect setae; shining; with transverse substriate microsculpture. Widest before base, sides curving to apex; apical margin weakly emarginate, basal margin nearly straight; apical angles rounded, basal angles weakly obtuse, narrowly rounded. Elytra. Punctation moderately fine; longitudinal rows discernable basally near suture; bearing minute erect setae; punctures joined by fine transverse strioles, giving an imbricate appearance basally. Slightly wider than pronotum, widest in basal one-third, roundly narrowing to apex. Legs. Protibia ( Fig. 129 ) moderately broad apically; width at apex more than 2X width at base; spinose on outer margin and apically; dense fine spines on apical one-half of inner margin. Mesotibia ( Fig. 130 ) moderately slender; strongly spinose on outer margin and apically; spinose on apical one-fourth of inner margin. Metatibia ( Fig. 131 ). moderately slender, weakly curved; strongly spinose apically; small spines on apical two– thirds of inner margin. Metafemur ( Fig. 131 ) sexually dimorphic, broad in male. Male protarsomeres ( Fig. 129 ) weakly expanded, bearing elongate setae laterally and broad, thin, colorless phanerae ventrally. Mesotarsomeres without phanerae. Venter. Mesoventrite ( Fig. 135 ) carinate; longitudinal carina with toothlike expansion near middle; not excavated behind transverse carina. Male genitalia. Median lobe of aedeagus ( Figs. 132, 133 ) broad; apex flattened and narrowing to acute tip. Everted internal sac ( Fig. 133 ) with triangular sclerotized structure. Parameres ( Figs. 132, 133 ) elongate with thin, flattened apices; extending beyond apex of median lobe; each bearing two wellspaced setae before apex. Spermatheca. Elongate ( Fig. 134 ), tubular, twisted before duct.

Etymology. The name fresno , a noun in apposition, refers to the type locality of this species in Fresno Co., California.

Figures

FIGURE 136. Distributions of species in the Pinodytes pusio species group in the southwestern United States. P.fresno, closed squares in the Sierra Nevada Mountains of central California. P. gibbosus, open circles in southern California coastal ranges (Santa Monica Mountains) and the Channel Islands. P. humboldtensis, closed circles in the Coastal Ranges of northwestern California. P.idaho, open square in west central Idaho. P. klamathensis, open triangles in the Klamath mountains of northern California and Southwestern Oregon. P. losangles, closed triangles in coastal mountains of southern California.

FIGURES 11–18. Pinodytes habitus photos. 11. P.eldorado, total length 1.28 mm. 12. P. fresno, total length 1.54 mm. 13. P. gibbosus, total length 1.68 mm. 14. P. humboldtensis, total length 1.46 mm. 15. P.idaho, total length 1.28 mm. 16. P.klamathensis, total length 1.34 mm. 17. P.losangeles, total length 2.10 mm. 18. P. marinensis, total length 1.04 mm.

FIGURES 128–135. Pinodytes fresno. 128. Male right antenna, dorsal. 129. Male right protibia and protarsus. 130. Male right mesotibia. 131. Male right metafemur and metatibia. 132. Aedeagus, lateral. 133. Aedeagus, dorsal. 134. Spermatheca. 135. Mesoventrite, lateral. Scale bar = 0.1 mm (Fig. 134), 0.3 mm (Figs. 128–133, 135).