Pinodytes humboldtensis 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 : 27-28

Pinodytes humboldtensis Peck & Cook , new species

( Figs. 14 , 136 , 145–152 )

Type material. Holotype: male ( SBPC). UNITED STATES. California: Humboldt Co., Redwood Nat. Park, Orick , N41°18’ W124°01’, 400m, Lady Byrd Johnson Grove, litter Ber., 28.V.03, S. Peck, 03-85 . Paratypes (96). UNITED STATES. California: same data as holotype, 25 ( SBPC) ; Humboldt Co., Orick , 29.IV.1976, T.R. Haig, Ber. redwood duff, 25 ( CSCA) ; Humboldt Co., Prairie Ck. Redwoods St. Pk., Orick , 16.VIII.1966, J. & S. Cornell, ex. redwood litter, 966VIII-16-1, 15 ( JFCC) ; Humboldt Co., 4miS Fieldbrook , 29.VI.1969, J. Powell, under Sequoia logs w/fungus, 8 ( EMEC) ; Humboldt Co., Freshwater , 13.VIII.1953, G.A. Marsh, R.O. Schuster, 1 ( EMEC) ; Humboldt Co., Dry Lagoon St. Pk. , 22.III.1967, E.M. Benedict, DM 248, 3 ( UCDC) ; [Humboldt Co.], Eureka, 2.6, H.S. Barber, 2 ( MCZC) ; [Humboldt Co.], Eureka, 3.6, H.S. Barber, 1 ( MCZC) ; [Humboldt Co.], Eureka, 5.6, H.S. Barber, 2 ( USNM) ; [Humboldt Co.], Eureka, 4.6.03, H.S. Barber, 1 ( USNM) ; [Humboldt Co.], Eureka, 3.6, H.S. Barber, 3 ( USNM) ; [Humboldt Co.], Eureka, 2.6, H.S. Barber, 3 ( USNM) ; [Humboldt Co.], Fieldbrook, 29.5.03, H.S. Barber, 1 ( USNM) ; Del Norte Co., Stout Grove , II.1986, Sequoia litter, F. W. Merickel, 6 ( WFBM) .

Additional material examined. We examined 934 specimens additional to those listed above (See Appendix) for a total of 1031 specimens.

Distribution. Specimens ( Fig. 136 ) are known only from Del Norte and Humboldt counties in northwestern Califonria.

Diagnostic description. Total length 1.32–1.46 mm; greatest width 0.82–0.86 mm. Reddish brown; oval in shape ( Fig. 14 ). Head. Finely, sparsely punctate, shining, with faint reticulate microsculpture on vertex. Eyes absent. Antenna ( Fig. 145 ) with antennomeres 2 and 3 subequal in length; antennomere 5 wider than 4, subequal to 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. Minutely, sparsely punctate; with reticulate microsculpture. Widest at base, nearly as wide as elytra; sides rounded, narrowing to apex; apical margin weakly emarginate, basal margin nearly straight; apical angles broadly rounded, basal angles narrowly rounded. Elytra. Finely punctate; punctures in obscure longitudinal rows; with fine, widely spaced transverse strioles. Joined elytra slightly wider than pronotum, widest at basal one-fourth, narrowing to apex. Legs. Protibia ( Fig. 146 ) slender; apical two-thirds of outer margin and apical margin spinose; apical three-fifths of inner margin with fine spines. Mesotibia ( Fig. 147 ) slender, straight; strongly spinose apically; a large, elongate spine at middle of outer margin. Metatibia ( Fig. 148 ) slender, nearly straight; strong spines apically; smaller spines on apical three-fifths. Metafemur ( Fig. 148 ) slender. Male protarsomeres ( Fig. 146 ) feebly or not dilated, bearing elongate setae laterally and thin, broad, colorless phanerae ventrally. Mesotarsomeres without phanerae. Venter. Mesoventrite ( Fig. 152 ) carinate; longitudinal carina with a toothlike expansion near middle; transverse carina on different plane than longitudinal carina; not excavated behind transverse carina. Male genitalia. Median lobe of aedeagus ( Figs. 149, 150 ) broad with flat, dorsally depressed, rounded apex. Inverted internal sac ( Fig. 150 ) with two pairs of elongate, narrow structures near middle; posteriorly with a distinctive elongate, dark structure bearing spines. Parameres ( Figs. 149, 150 ) moderately narrow, extending to near apex of median lobe; with flat, deflexed apices, each bearing two closely spaced setae before apex. Spermatheca. Elongate ( Fig. 151 ), tubular, sinuate.

Etymology. The name humboldtensis refers to the abundance of this species in Humboldt 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 145–152. Pinodytes humboldtensis. 145. Male right antenna, dorsal. 146. Male right protibia and protarsus. 147. Male right mesotibia. 148. Male right metafemur and metatibia. 149. Aedeagus, lateral. 150. Aedeagus, dorsal. 151. Spermatheca. 152. Mesoventrite, lateral. Scale bar = 0.1 mm (Fig. 151), 0.3 mm (Figs. 145–150, 152).