Pseudotremia glaber, Shear, William A., 2011

Shear, William A., 2011, Cave millipeds of the United States. X. New species and records of the genus Pseudotremia Cope. 2. Species from Virginia, USA (Diplopoda, Chordeumatida, Cleidogonidae), Zootaxa 3109, pp. 1-38 : 16-18

Pseudotremia glaber , n. sp.

Figs. 40–46

Types: Male holotype from below Thorne Dam, Pinnacles of Dan, Patrick Co., VIRGINIA, collected 8 April 1974 by R. L. Hoffman; female paratype from same locality, collected 22 April 1972 by R. L. Hoffman. Male holotype head, gonopods, legpair 9 and paratype female genitalia mounted on SEM stub WS23–2.

Diagnosis: This species has an almost completely smooth dorsum, unique in this group of large epigean/ troglophilic species; the ventral colpocoxite process is also unique, in the form of a ventrally pointing large spike; the subapical spines of the median angiocoxite processes are very broad and directed anteriorly.

Etymology: The Latin adjective glaber means “smooth-skinned,” and refers to the smooth metazonites of this species. Suggested vernacular name: Pinnacles of Dan Rough-backed Milliped.

Description: Male holotype 28 mm long, 2.0 mm wide, third antennal segment 1.52 mm long. Nineteen ocelli on each side, round, well-developed but somewhat separated from each other (fig. 40). Segmental shoulders prominent; metazonites smooth, with only a few vague rugae at posteriolateral corners (fig. 41); lateral striae obscure, six to eight. Specimens bleached white by long preservation but probably typically colored in life as other epigean species.

Gonopods (figs.43, 44, 46) moderately robust. Angiocoxites basally separated, distally converging; MAPs and LAPs separated by U-shaped sinus; MAPs with broad, mesally curved, anteriorly directed subapical spines, laterally directed, narrower apical spines less than half length of subapical spines; LAPs broad, sinuously curved, in lateral view seemingly with one turn of a spiral (fig. 46) before dividing near tip into two branches. Colpocoxites large, curving anteriorly, mitten-shaped, fused for most of their length; VCP a large spike, directed ventrally; DCP absent. Ninth legs (fig. 45) typical, coxoprefemur and femur subequal, coxoprefemur with large basal knob subtended by smaller lobe, deeply excavate medially so that distal part appears swollen.

Female similar to male in nonsexual characters. Female genitalia as in fig. 42.

Additional record: VIRGINIA: Patrick Co.: Rock Castle Gorge, west of Woolwine, 2 May 1987, R. L. Hoffman, Ƥ.

Figures

FIGURES 39 – 45. New species of Pseudotremia. Fig. 39, gonopods of Pseudotremia peponocranium, n. sp., ventral view. Figs. 40 – 45. Pseudotremia glaber, n. sp. Fig. 40, ocelli. Fig. 41, metazonite, dorsal view. Fig. 42, female genitalia, ventral view. Fig. 43, gonopods, anterior view. Fig. 44, gonopods, ventral view. Fig. 45, right ninth leg, anterior view.

FIGURES 46 – 52. New species of Pseudotremia. Fig. 46, gonopods of Pseudotremia glaber, n. sp., lateral view. Figs. 47 – 50, P. f e r g u s o n i, n. sp. Fig. 47, ocelli. Fig. 48, metazonite, dorsal view. Fig. 49, metazonite, lateral view. Fig. 50, gonopods, ventral view; cc, colpocoxites; dcp, dorsal colpocoxite process; lap, lateral angiocoxite process; map, median angiocoxite process. Fig. 51, right ninth leg, anterior view. Fig. 52, P. jaculohamatum, n. sp., right ninth leg, anterior view.