Desoria capra Fjellberg, 2010, sp. n.
Desoria capra sp. n. (Fig. 77) Type material. Holotype (female, in slide) and paratype (male, slide) from "Alaska: Juneau. Mts. between Mendenhall Glacier and Montana Creek Trail, 58 o 29 'N, 134 o 40 'W, 13.VII. 1980. On melt-water ponds, 975 m. alt., A. Fjellberg leg." (INHS)....
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2010
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| Online Access: | https://zenodo.org/record/3509802 https://doi.org/10.5281/zenodo.3509802 |
| Summary: | Desoria capra sp. n. (Fig. 77) Type material. Holotype (female, in slide) and paratype (male, slide) from "Alaska: Juneau. Mts. between Mendenhall Glacier and Montana Creek Trail, 58 o 29 'N, 134 o 40 '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). 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). 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), 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. Published as part of Fjellberg, Arne, 2010, Cryophilic Isotomidae (Collembola) of the Northwestern Rocky Mountains, U. S. A., pp. 27-49 in Zootaxa 2513 on page 40, DOI:10.5281/zenodo.196078 |
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