Bidentogon buttensis Shear & Marek, 2021

Shear, William A. & Marek, Paul E., 2021, Three new genera and eighteen new species of miniature polydesmid millipedes from the northwestern United States (Diplopoda, Polydesmida, Polydesmidae), Zootaxa 4975 (1), pp. 81-126 : 90-91

Bidentogon buttensis Shear & Marek , new species

Figs 13–16

Type. Male holotype from near Stringtown Hill, NE of Oroville , Butte Co., California, collected 9 February 1956 by R. O. Schuster, deposited in the Florida State Collection of Arthropods , Gainesville, Florida. The dissected holotype is mounted on SEM stub WS33-9, deposited in CAS .

Diagnosis. The solenomere (sm, Fig. 16 ) is short and has a low tooth subdistally, nearly appearing bifid; the short terminal zone (tz, Fig. 16 ) is slightly expanded and also has a low subterminal tooth. There are 16 setae in the anterior marginal row of the collum ( Fig. 13 ).

Etymology. The species name, an adjective, is from the type locality in Butte Co., California.

Description. Male holotype. Length about 5–6 mm, maximum width 0.7 mm. Nonsexual characters typical for the genus. Femora of third legpair expanded, nearly spherical. Gonopod prefemora typically flattened (pf, Fig. 15 ). Acropodite (ac, Fig. 15 ) short, distally broadened, solenomere curved, nearly as long as terminal zone. Terminal zone with very low subterminal tooth. Females unknown.

Distribution. Known only from the type locality.

Figures

FIGURES 13–16. Bidentogon buttensis, n. sp. 13. Head and anterior rings, dorsal view. 14. Midbody ring, dorsal view. 15. Gonopods in situ, ventral view. 16. Gonopod tips, ventral view. Abbreviations: ac, acropodite; pf, prefemorite; sm, solenomere; tz, terminal zone. SEM stub WS33-9.