A new species of Tapinocyba (Araneae, Linyphiidae) with a redescription of Tapinocyba minuta (Emerton) Author Dupérré, Nadine Author Paquin, Pierre text Zootaxa 2005 1069 33 45 journal article 50839 10.5281/zenodo.170267 ef251fd3-140c-44b8-95af-c1ed2ec56ca8 1175­5326 170267 Tapinocyba prima new species ( Figs. 7–13 ) Tapinocyba minuta : Dondale et al . 1997 : 89 ; Paquin and Dupérré 2003 : 122 , figs. 1276–1279 . Type material.— HOLOTYPE : Canada : British Columbia : Summit Lake [ 58°39’N , 124°38’W ] 01.vi.–08.vii.1981 , moss above tree line, pitfall, 1ɗ, C.D. Dondale ( CNC ); ALLOTYPE : 1Ψ, same data as for holotype ; PARATYPES : Canada : Alberta : Waterton Lakes National Park of Canada , Alderson­Carthew Trail [ 49°05’N , 113°52’W ] 18.vii.1986 , Potentilla , Dryas , moss, lichens, fungus, Carex , 1ɗ, VB87­ 86 V. Behan ( CNC ); near Morley [ 51°09’N , 114°52’W ] 16.v.–05.vi.1963 , grass edge of poplar woods, 4ɗ, A.L. Turnbull ( CNC ); British Columbia : Tetsa River, mi 378 Alaska Highway [ 58°38’N , 123°42’W ] 31.v.–08.vii.1981 , spruce­poplar forest, 1ɗ, C.D. Dondale ( CNC ); Alaska Highway, 15.5 km S Sikanni river [ 57°58’N , 121°11’W ] 31.v.–08.vii.1981 , sprucepine forest, 1ɗ, C.D. Dondale ( CNC ); Yukon : British Mountains, Sheep Creek [ 69°10’N , 140°18’W ] 23.vi.1984 , Mertensia litter & soil, on rich SE facing slope, 410m , 1Ψ, VB69­ 84, V. Behan ( CNC ); British Mountains, June Creek near Firth river [ 69°13’N , 140°05’W ] 18.vi. 1984 , 320m, 2Ψ, VB26/7­84, V. Behan ( CNC ); British Mountains, June Creek Delta [ 69°09’N , 140°10’W ] 19.vi.1984 , Populus balsamifera litter, 1Ψ, V. Behan ( CNC ); U.S.A. Vermont : Lamoille County, Mansfield Mountain [ 44°32’N , 72°48’W ] 13.vii.1971 , litter under dwarf birch, 4100 feet [ 1250m ], 3Ψ, E.E. Lindquist ( CNC ); New York : Essex County, Adirondacks, Mount Algonquin [ 44°08'N , 73°59'W ] 16.viii.1985 , Sphagnum , Ledum, Arctostaphy , 5110 feet [ 1550m ], 1ɗ, VB204, V. Behan ( CNC ). Other material.— Canada : Alberta : Whitemud Creek, Edmonton [ 53°31’N , 113°34’W ] 08.v.1959 , soil sample, 2Ψ, L.K. Smith ( CNC ); Manitoba : Fort Churchill [ 58°45’N , 94°04’W ] 08.ix.1953 , berlese, 3Ψ, C.C. Barlow ( CNC ); Newfoundland : Conception Bay South, Top of Main, Topsail [ 47°32’N , 52°56’W ] 20.vi.1985 , Diapensia lapponica , 1Ψ, L.H. Hollett ( CNC ); Yukon : British Mountains, Parnassius Valley [ 69°13’N , 140°10’W ] 27.vi.1984 , mixed Betula, Salix, Eriophorum meadow, 1Ψ, VB103­ 84, V. Behan ( CNC ); British Mountains, June Creek Delta [ 69°09’N , 140°10’W ] 19.vi.1984 , mixed vegetation, in spruce forest­ Dryas , Betula, Vaccinium , VB40­84, V. Behan ( CNC ); U.S.A. Vermont : Lamoille County, Mansfield Mountain [ 44°32’N , 72°48’W ] 03.vii.1971 , litter under dwarfed fir, 4300 feet [ 1310m ], 2Ψ, E.E. Lindquist ( CNC ). Diagnosis.— The males of T. prima new species are distinguished by the raised dorsal shield of the prosoma ( Fig. 7 ); tail­piece rather small not pear­shaped, embolus thin, straight, spine­like; protegulum large and somewhat triangular ( Fig. 8 ); palpal tibial apophysis thick and stout ( Fig. 10 ). The females have the epigynum recurved onto a median plate, forming the copulatory openings ( Fig. 11 ). Spermathecae oriented obliquely ( Fig. 12 ). Description.— Male (n=5) : Total length: 0.94–0.98mm ; carapace length: 0.45– 0.47mm ; carapace width: 0.31–0.35mm ; carapace smooth, shiny, light yellow to light brown (#fafad2 to #daa520), cephalic region sometimes ornamented by a light grey marking forming a trident (or psi,), carapace border and radiating lines occasionally suffused with grey; 4 erect setae along midline, cephalic pit and sulci present, dorsal shield of the prosoma raised ( Fig. 7 ). Sternum light yellow, variably suffused with grey. Chelicerae light yellow, promargin with 2 large and 3 small teeth, retromargin with 4–5 denticles. Cheliceral stridulatory organ not visible with a dissection microscope (highest magnification 120x). Abdomen uniformly coloured, light to dark grey (#d3d3d3 to #8b8378), densely covered with semi­erect setae. Legs light yellow, tibia I–IV with one dorsal macroseta; metatarsus I with dorsal trichobothrium, TM I 0.40–0.44, Tm IV absent. Palpal tibia with a thick, stout, curved apophysis ( Figs. 9–10 ); embolus thin, straight, spine­like ( Fig. 8 ); protegulum triangular ( Fig. 8 ); tail­piece somewhat rectangular, fundus visible; paracymbium cup­shaped, bearing ~9 setae along its edge ( Fig. 9 ). Female (n=5) : Total length: 1.00– 1.22mm ; carapace length: 0.44–0.48mm ; carapace width: 0.33–0.35mm ; carapace colouration as in male, occasionally with suffused grey pattern, 4 erect setae along midline. Colouration of sternum and chelicerae as in male; promargin of chelicerae with 2 large and 3 small teeth, retromargin with 5 denticles. Cheliceral stridulatory organ not visible with dissection microscope (highest magnification 120x). Abdomen uniformly coloured, lighter than male, light grey (#e0eee0), densely covered with semi­erect setae. Legs light yellow, tibia I–IV with one dorsal macroseta; metatarsus I with dorsal trichobothrium, Tm I 0.35–0.42, Tm IV absent. Posterior portion of the epigynal plate sclerified, recurved onto a median plate, forming the copulatory openings ( Fig. 11 ). Spermathecae visible through the cuticle and extending well beyond the epigynal plate ( Figs. 11–12 ). Spermathecae oval and oriented obliquely, fertilization ducts curved, copulatory ducts long and curled ( Fig. 12 ). Distribution.— Widespread in North America , from northern Yukon to Newfoundland with an extension in the Rockies; southern records from the East Coast from high elevations in New York and Vermont ( Fig. 13 ). Habitat.— This species has been collected in forest litter, moss and lichens. Etymology.— The specific name is an adjective derived from the Latin primus, ­a, ­ um , meaning “the first”, as a reference to our first new species description.