Desoria capra, Fjellberg, Arne, 2010

Fjellberg, Arne, 2010, Cryophilic Isotomidae (Collembola) of the Northwestern Rocky Mountains, U. S. A., Zootaxa 2513, pp. 27-49 : 40

publication ID	https://doi.org/ 10.5281/zenodo.196078
DOI	https://doi.org/10.5281/zenodo.3509802
persistent identifier	https://treatment.plazi.org/id/504F2D6C-FFD4-FF84-97BE-F264FD3418A1
treatment provided by	Plazi
scientific name	Desoria capra
status	sp. nov.

Treatment

Desoria capra sp. n.

( Fig. 77 View FIGURES 57 – 77 )

Type material. Holotype (female, in slide) and paratype (male, slide) from "Alaska: Juneau. Mts. between Mendenhall Glacier and Montana Creek Trail, 58o29'N, 134o40'W, 13.VII.1980. On melt-water ponds, 975 m. alt., A. Fjellberg leg." ( INHS).

Description. Size 1.2 mm (subadult female in slide). Eye-spots black, rest of body white. Ocelli 6+6. Labrum modified, with stiff setae set close together (somewhat like Gnathisotoma spinolabris , described below). Apical edge of labrum membranous, without visible ventral ciliation (more like rough sandpaper). Maxillary palp trifurcate. Maxillae modified, with prolonged lamellae; Lam.1 passes well beyond tip of capitulum and appears almost smooth, without visible ciliation. Third tooth of capitulum thin and membranous ( Fig. 77 View FIGURES 57 – 77 ). Labium with 4+4 basomedian setae. Ventral tube with 1+1 frontal and 3+3 lateral setae. Dens with 7 dorsal setae in proximal half. Tib. 1–2 shortened, inner side with 3+3 setae along median line (as Fig. 72 View FIGURES 57 – 77 ). Abd. 5–6 fused.

Etymology. The name refers to the mountain goat ( Oreamnos americanus ) which is abundant in the area where this new species was collected.

Discussion. The species shares essential characters with cryophila and rosea in the 6+6 ocelli, small roundish PAO with three associated setae, "double" setal cover with distinct macrochaetae (as Fig. 30 View FIGURES 30 – 56 ), abdominal sensilla inserted anterior to the p-row, manubrium with abundant (>50) setae in the ventral median field, mucro compact with 5 teeth. It differs sharply from other species of this group by having a trifurcate maxillary palp and modified labrum and maxillae. Despite that only two specimens are known, the species is so distinct that a formal description seems justified.