Pinodytes gibbosus 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 : 25-27

Pinodytes gibbosus Peck & Cook , new species

( Figs. 13 , 136–144 )

Type material. Holotype: male ( SBPC). UNITED STATES. California: Orange Co., Rt. 74, 20 km SW Lake Elsinore, Lower San Juan Picnic Area, 11.III. 99, 430m, oak forest litter, S. & J. Peck, 99-88. Paratypes (110). UNITED STATES. California: same data as holotype, 10 ( SBPC); Los Angeles Co., 34.0561N 118.8800W, Charmlee Park, 14.IV.2009, M.S. Caterino, K.J. Hopp, Quercus litter, 1 ( SBMN); Los Angeles Co., 34.0561N 118.8800W, Leo Carrillo SP, 14.IV.2009, M.S. Caterino, K.J. Hopp, Heteromeles / Quercus litter, 1 ( SBMN); Los

Angeles Co., 34.0769N 118.8157W, Santa Monica Mts., Zuma Cyn., 14.IV.2009, M.S. Caterino, K.J. Hopp, Quercus litter, 1 ( SBMN); Los Angeles Co., 34.0809N 118.5654W, Topanga SP, Santa Ynez Cyn., 30.III.2009, K.J. Hopp, Heteromeles litter, 1 ( SBMN); Los Angeles Co., 34.0809N 118.7958W, Santa Monica Mtns NRA, Castro Crest, 29.IV.2009, K.J. Hopp, Umbellularia litter, 2 ( SBMN); Los Angeles Co., 34.0861N 118.6645W, Santa Monica Mts. NRA, 3.III.2009, M.S. Caterino, K.J. Hopp, Arctostaphylos /Cercocarpus litter, 6 ( SBMN); Los Angeles Co., 34.0861N 118.6645W, Santa Monica Mts. NRA, 3.III.2009, M.S. Caterino, K.J. Hopp, Arctostaphylos /Cercocarpus litter, 10 ( SBMN); Los Angeles Co., 34.0976N 118.5858W, Santa Monica Mts., Topanga SP, 8.II.2009, M.S. Caterino, K.J. Hopp, Quercus litter, 1 ( SBMN); Los Angeles Co., 34.1115N 118.7785W, Peter Strauss Ranch, 29.IV.2009, K.J. Hopp, Umbellularia / Quercus litter, 1 ( SBMN); Los Angeles Co., 34.1289N 118.5162W, Topanga SP, San Vincente Mtn., 16.III.2009, M.S. Caterino, K.J. Hopp, Quercus litter, 1 ( SBMN); Los Angeles Co., S.M. Mtns., Bundy Cyn., 24.I.1963, L. Woodley, 1 ( TAMU); Los Angeles Co., Santa Catalina Is. East End Rd, 33.3216N 118.3464W, 29.I.2010, M.S. Caterino, K.J. Hopp, Rhus / Quercus litter, 1 ( SBMN); Los Angeles Co., Santa Catalina Is. Howlands Landing, 33.4598N 118.5268W, 30.I.2010, M.S. Caterino, K.J. Hopp, Rhus litter, 2 ( SBMN); Los Angeles Co., Santa Catalina Is. nr Black Jack Peak, 33.3890N 118.3962W, 31.I.2010, M.S. Caterino, K.J. Hopp, Quercus litter, 1 ( SBMN); Los Angeles Co., Santa Catalina Is. nr Black Jack Peak, 33.3896N 118.3969W, 31.I.2010, M.S. Caterino, K.J. Hopp, Lyonothamnus litter, 1 ( SBMN); Los Angeles Co., Santa Catalina Is, west end, 33.4540 118.5178 W, 30.I.2010, M.S. Caterino, K.J. Hopp, Lyonothamnus litter, 3 ( SBMN); Los Angeles Co., Santa Monica Mts. 34.0899N 118.6530W, 11.II.2010, M.S. Caterino, K.J. Hopp, Heteromeles / Umbellularia litter, 1 ( SBMN); Riverside Co., 20 rd km SW Lake Elsinore, Elsinore Mtns., 2.II. 1999, 800m, S. & J. Peck, 99-40, oak forest litter, 2 ( SBPC); Riverside Co., Rt 74, 16kmSW Lake Elsinore, Upper San Juan Cpgds., 11.III.1999, S. & J. Peck, 99-89, canyon oak forest litter, 3 ( SBPC); Riverside Co., Rt 74, 16kmSW Lake Elsinore, Upper San Juan Cpgds., 22.I. 1999, 630m, S. & J. Peck, 99-25, canyon oak forest litter, 1 ( SBPC); Santa Barbara Co., 33.9795N 120.0784W, CINP, Santa Rosa I., Black Mtn. summit, 24.IV.2008, M.S. Caterino, litter Quercus tomentella , 7 ( SBMN); Santa Barbara Co., 33.9826N 120.0222W, CINP, Santa Rosa I., Torrey Pines grove, 23.IV.2008, M.S. Caterino, litter Pinus torreyana , 1 ( SBMN); Santa Barbara Co., 33.9842N 120.0202W, CINP, Santa Rosa I., Torrey Pines area, 15.VI.2007, Caterino & Chatzimanolis, Pinus litter, 1 ( SBMN); Santa Barbara Co., 33.9842N 120.0202W, CINP, Santa Rosa Island, Torrey pines gr., 26.IV.2008, M.S. Caterino, litter Pinus torreyana , 8 ( SBMN); Santa Barbara Co., 33.9842N 120.0734W, CINP, Santa Rosa I., upper Cherry Cyn., 27.IV.2008, M.S. Caterino, litter Quercus tomentella , 15 ( SBMN); Santa Barbara Co., 33.9842N 120.0734W, CINP, Santa Rosa I., upper Cherry Cyn., 27.IV.2008, M.S. Caterino, litter Quercus pacifica , 7 ( SBMN); Santa Barbara Co., 33.9850N 120.0764W, CINP, Santa Rosa Island, Windmill Cyn., 22.IV.2008, M.S. Caterino, litter Quercus tomentella , 6 ( SBMN); Santa Barbara Co., 34.0166N 119.8096W, UC Santa Cruz I. Res., Canada Christy, 14.V.2009, Caterino, Chatzimanolis, Hopp, Polihronakis, Pinus / Quercus litter, 1 ( SBMN); Santa Barbara Co., 34.0320N 119.8033W, UC Santa Cruz I. Res., Lagunitas Secas, 12.V.2009, Caterino, Chatzimanolis, Hopp, Polihronakis, Quercus litter, 1 ( SBMN); Santa Barbara Co., 34.0332N 119.8136W, UC Santa Cruz I. Res., Valdez Cyn., 12.V.2009, Caterino, Chatzimanolis, Hopp, Polihronakis, Quercus litter, 2 ( SBMN); Santa Barbara Co., Santa Cruz Is., Central Vy. nr. U.C. Sta., 2.II.1979, J. Doyen, 2 ( EMEC); Santa Barbara Co., Santa Cruz Isl. no Field Station, X-S-1981, J.A. Moore, 81–207, Oak litter, 5 ( CSCA).

Material examined. We have examined 111 specimens.

Distribution. Specimens ( Fig. 136 ) are known from Los Angeles, Orange, Riverside, and Santa Barbara counties, in southwestern California, including Santa Rosa,Santa Catalina, and Santa Cruz islands of the Channel Islands.

Diagnostic description. Total length 1.68–1.84 mm; greatest width 0.90–0.97 mm. Reddish brown; oval in shape ( Fig. 13 ). Head. Finely punctate, punctures separated by 2–5 diameters; a larger puncture on each side opposite apex of stem of epistomal suture; shining, without microsculpture. Eyes absent. Antenna ( Fig. 137 ) with antennomere 3 slightly longer than 2; antennomere 5 wider than 4, larger than 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. Evenly, finely punctate; punctures separated by about 2 diameters; shining, with transverse substriate microsculpture. Widest before base, sides weakly rounded, narrowing to apex; apical margin weakly emarginate, basal margin nearly straight; apical angles rounded, basal angles rectangular. Elytra. Strongly, densely punctate; punctures in longitudinal rows, joined transversely by fine strioles. Joined elytra slightly wider than pronotum, widest in basal one-half, narrowing to apex. Legs. Protibia ( Fig. 138 ) of moderate width, width increasing evenly from base to apex; spinose on apical one-half of outer margin and apically; fine, dense spines on apical one-half of inner margin. Mesotibia ( Fig. 139 ) of moderate width; strongly spinose on outer margin and apically; smaller spines on apical one-half of inner margin. Metatibia ( Fig. 140 ) slender, straight; outer margin with a single spine near middle, spinose at apex; small spines on apical one-half of inner margin. Metafemur ( Fig. 140 ) sexually dimorphic, broad in males, slender in females. Male protarsomeres ( Fig. 138 ) weakly expanded, bearing elongate setae laterally and thin, broad, colorless phanerae ventrally. Mesotarsomeres without phanerae. Venter. Mesoventrite ( Fig. 144 ) carinate; longitudinal carina with toothlike expansion near middle; not excavated behind transverse carina. Male genitalia. Median lobe of aedeagus ( Figs. 141, 142 ) broad, sharply declivous dorsally at apical onethird; apex rounded, flattened at tip. Everted internal sac ( Fig. 142 ) with a small, dentate, heavily sclerotized structure. Parameres ( Figs. 141, 142 ) elongate, broad, with flattened apices; an expanded flange on inner margins before apices; each bearing two well separated setae on outer margins before apices. Spermatheca. Elongate ( Fig. 143 ), tubular, coiled before duct.

Etymology. The name gibbosus, Latin , protuberant, refers to the shape of the median lobe of the aedeagus in this species.

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 137–144. Pinodytes gibbosus. 137. Male right antenna, dorsal. 138. Male right protibia and protarsus. 139. Male right mesotibia. 140. Male right metafemur and metatibia. 141. Aedeagus, lateral. 142. Aedeagus, dorsal. 143. Spermatheca. 144. Mesoventrite, lateral. Scale bar = 0.2 mm (Fig. 143), 0.4 mm (Figs. 137–142, 144).

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.