Pseudotremia hubbardi, 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 : 24

Pseudotremia hubbardi , n. sp.

Figs. 66–71

Types: Male holotype, male and female paratypes from Cracker’s Neck Saltpetre Cave, Wise Co., VIRGINIA, collected 12 March 1997 by D. Hubbard.

Diagnosis: The gonopods of this troglomorphic species are unlike those of any other in Virginia, with large, thick colpocoxites that extend anteriorly to partially cover the angiocoxites (fig. 71). A similar arrangement occurs in P. stupefactor Shear 1972 , but that species occurs in central Kentucky and is not troglomorphic.

Etymology: It is a distinct pleasure to name this species for David Hubbard, a speleobiologist and karst geologist with the Virginia Department of Mines, Minerals and Energy, who has collected extensively in southwestern Virginia and added significantly to our knowledge of cave faunas there. Suggested vernacular name: Hubbard’s Cave Milliped.

Description: Male 18 mm long, 1.2 mm wide. 12–13 unpigmented ocelli on each side of head (fig. 67). Segmental shoulders well-developed past midlength of body; metazonites entirely smooth (fig. 68); 3–5 lateral striae incomplete, not well-marked (fig. 66).

Gonopods (figs. 69–71) large, angiocoxites parallel, not diverging; MAPs without spines, abruptly narrowed distally, deflected dorsally; LAPs closely paralleling MAPs, slightly sinuous, divided at tips. Colpocoxites very large, thick, not mitten-shaped, curved at right angles anteriorly to cover angiocoxites in ventral view (fig. 71); colpocoxite processes absent. Ninth legs (figs. 69–71) with femur equal to coxoprefemur, coxoprefemoral lobes low.

Female similar to male.

Additional records: VIRGINIA: Wise Co.: Ridge Cave, 4 km SE of East Stone Gap, off Va. Rt. 616 (Cracker’s Neck), 18 March 1996, D. Hubbard, mm ff; Kelly Cave, Big Stone Gap, 25 January 2005, W. Orndorff, 3, Ƥ; Parson’s Cave, E of East Stone Gap, off Va. Rt. 616, 22 April 1996, D. Hubbard, 3, ƤƤ; Little Kennedy Cave, N of Big Stone Gap, 26 November 1970, J. Holsinger, R. Baroody, 3, Ƥ; Blowing Cave, East Stone Gap, 2 February 2005, B. Schwartz, 3, ƤƤ; Kelly Cave, 3 mi NE of Big Stone Gap, 30 November 1974, J. Holsinger et al., 3, ƤƤ; Wildcat Saltpetre Cave, 7 mi SE Big Stone Gap, 27 November 1975, J. Holsinger et al., m.

Notes: Only the southwest corner of Wise Co. is karstic; Pseudotremia hubbardi is found in a group of caves clustered around East Stone Gap and Big Stone Gap. Both these places are in the upper reaches of the Powell River Valley, at the westernmost margin of the Ridge and Valley Province.

As seen in figs. 69–71, the gonopod colpocoxites are tightly embraced by the coxoprefemora of legpair 9; the robust colpocoxites in this species made inadvisable an attempt to separate the gonopods and ninth legpair.

Figures

FIGURES 59 – 66. New species of Pseudotremia. Figs. 59 – 65, Pseudotremia fremens, n. sp. Fig. 59, ocelli. Fig. 60, diplosegment, dorsal view. Fig. 61, diplosegment, lateral view. Fib. 62, gonopods, anterior view. Fig. 63, gonopods, ventral view; vcp, ventral colpocoxite process. Fig. 64, gonopods, lateral view; as, apical spine; cc, colopocoxite map, median angiocoxal process; sas, subapical spine; vcp, ventral colpocoxite process. Fig. 65, left ninth leg, anterior view. Fig. 66, P. hubbardi n. sp., metazonite, lateral view.

FIGURES 67 – 72. New species of Pseudotremia. Figs. 67 – 71, Pseudotremia hubbardi, n. sp. Fig. 67, ocelli. Fig. 68, metazonite, dorsal view. Fig. 69, gonopods, anterior view; cc, colpocoxites; lap, lateral angiocoxite process; map, median angiocoxite process. Fig. 70, gonopods, lateral view. Fig. 71, gonopods, ventral view; cc, colpocoxites. Fig. 72, P. ryenesis, n. sp., metazonite, lateral view.