Coloradesmus beckleyi Shear & Steinmann

Shear, William A. & Steinmann, David B., 2019, Cave millipedes of the United States. XV. Coloradesmus gen. nov. (Diplopoda, Polydesmida, Macrosternodesmidae), and four new species from caves in Colorado, USA, Subterranean Biology 32, pp. 15-32 : 24-25

publication ID

https://dx.doi.org/10.3897/subtbiol.32.38161

publication LSID

lsid:zoobank.org:pub:731EF530-E43D-4FB8-AAA3-9B4A0AD1AE09

persistent identifier

https://treatment.plazi.org/id/9737DDFE-2F14-4F5A-96FF-8E47BB053387

taxon LSID

lsid:zoobank.org:act:9737DDFE-2F14-4F5A-96FF-8E47BB053387

treatment provided by

Subterranean Biology by Pensoft

scientific name

Coloradesmus beckleyi Shear & Steinmann
status

sp. nov.

Coloradesmus beckleyi Shear & Steinmann sp. nov. Figs 22-25 View Figures 21–25 , 26, 27 View Figures 26, 27 , 28 View Figures 28, 29

Types.

Male holotype and male and female paratypes from La Sunder Cave, Garfield Co.: Colorado, 7500' (2287 m) asl, 39°42'N, 107°10'W, in organic matter and under cardboard along the first 1000' of passage, collected 31 July 1999 by D. Steinmann.

Diagnosis.

A small species of Coloradesmus , as is the following species, but differing from C. warneri in details of the gonopods, as shown in Figs 28-29 View Figures 28, 29 .

Etymology.

The species epithet honors Steve Beckley, for his dedication to cave conservation and education as the owner of Glenwood Caverns in nearby Glenwood Springs.

Description.

Male holotype. Length, about 4 mm, greatest width 0.4 mm. Head with short, sparse setae; basal joint of mandible exceeding width of collum ( Fig. 22 View Figures 21–25 ). Collum relatively short, posterior margin evenly, concavely curved ( Fig. 23 View Figures 21–25 ); collum setae short, clavate. Metazonites with somewhat suppressed but distinct paranota bearing obsolete teeth ( Figs 22-25 View Figures 21–25 ); setae distinctly clavate, short, set on prominent tubercles, rows even, uninterrupted. Telson ( Fig. 25 View Figures 21–25 ) with few setae, epiproct indistinct. Gonopods ( Figs 26 View Figures 26, 27 - 28 View Figures 28, 29 ) with coxae rather oval, immovable; acropodite (a, Figs 26 View Figures 26, 27 - 28 View Figures 28, 29 ) robust, blocky, pore without cuticular fimbriae, endomerite evidently absent. Prefemoral process (pfp, Figs 26 View Figures 26, 27 - 28 View Figures 28, 29 ) exceeding acropodite, narrow, with distinct acute hook at tip.

Female paratype. Similar in all nonsexual characters to male.

Distribution.

Known only from the type locality.