Gymnodamaeus cf. ornatus Hammer, 1952

Walter, David Evans, 2009, Genera of Gymnodamaeidae (Acari: Oribatida: Plateremaeoidea) of Canada, with notes on some nomenclatorial problems, Zootaxa 2206, pp. 23-44 : 27

Gymnodamaeus cf. ornatus Hammer, 1952

( Figs. 1–8 )

Gymnodamaeus ornatus Hammer, 1952 ( Paschoal 1982a, Marshall et al. 1987, Woas 2002, Subías 2004) Allodamaeus ornatus ( Hammer, 1952) ( Aoki & Fujikawa 1971)

Material examined: CANADA, YUKON TERRITORY: Syntypes: Reindeer Station, 48, Canada, 1948, CNC Type 13256, RB30 (770), in CNC; 2 females, one male Dempster Highway km 141N, VB16-87, 24.vi.1987, ex birch litter; 2 females, one male Klondike Highway, ca 10 km north of intersection Alaska Highway, VB10-87, 23.vi.1987; 5 females, 2 males Richardson Mts, Summit Lake (67.43N, 136.50W), 3.vii.1987, VB95-97, ex dry south-facing slope with Hedysarum , grass, Oxytropis , all V. Behan, in CNC. CANADA: ALBERTA: 109 adults, ABMI sites 359 (57.45488358 N, - 111.054222 W), 543 (56.36729431 N, - 110.807022W), 586 (56.55817032 N, - 117.017921 W), 616 (56.43681717 N, - 117.657349 W), 618 (56.38592148 N, - 117.012878 W), 632 (55.97986221 N, - 112.605103 W), 664 (55.85299301 N, - 112.605179 W), 792 (55.02651978 N, - 112.013039 W), 793 (54.97646332 N, - 111.730118 W), 825 (54.8119545 N, - 111.665276 W), 857 (54.64096451 N, - 111.759758 W), UPL7 (54.85365 N, - 111.62854 W), all v–vi.2007; 688 (55.8536644 N, - 114.960381 W), 720 (55.68632126 N, - 114.670769 W), 866 (55.06543732 N, - 118.975967 W), 867 (55.09334183 N, - 118.651749 W), 899 (54.89818954 N, - 118.988976 W), 975 (54.32518005 N, - 115.914856 W), 1009 (54.11553574 N, - 115.737389 W), 1085 (53.48584366 N, - 113.120331 W), 1116 (53.39312744 N, - 113.735886 W), 1191 (52.65173721 N, - 110.923225 W), 1192 (52.66613007 N, - 110.693031 W), SL11 (55.54247 N, - 114.82111 W), UPL1 (55.04704 N, - 111.64944 W), all v–vi.2008; 10 adults, aspen litter on south slope, 13.iii.2008, Onoway (53.77N, 114.06W), A. Finnamore; 25 adults, Lamont Co. near Chipman (53°39'N, 112°46’W), vii–ix.2008, D.E. Walter, all in PMAE.IZ; 3 adults, Waterton Lakes National Park, 2–5.x.1980, E. Lindquist ex mixed deciduous and spruce litter; in CNC. BRITISH COLUMBIA: 5 adults, Manning Provincial Park, Spruce Bay Beach, 1220m, 13.vii.1996, V. Behan, VB78-86, Douglas fir, western hemlock litter, some Va c c i n i u m and Cornus ; in CNC. ONTARIO: one female, St Lawrence Islands National Park, Grenadier Island, 8–9 July 1975, D. Spaner; in CNC; one adult, Shaw Woods Nature Reserve (46.63N), 77.07E), 30.ix.1993, VB138- 93 in PMAE.IZ. NORTH WEST TERRITORY: 2 females, 2 males Richardson Mts, Fish Creek, (67.57.5N, 136.26W), 4.vii.1987; VB108-87, V. Behan, ex Picea glauca litter with grass and Empetrum nigrum in CNC.

Figures

FIGURES 1 – 8. Gymnodamaeus cf. ornatus Hammer, Alberta, Canada; scale bars = 0.1 mm, except Fig. 3 = 1 μm. 1, Prodorsum showing interlamellar seta (in) on apophysis at median edge of bothridial ridge and opposed to median prodorsal tubercle (larger arrow); 2, Prodorsum and anterior notogaster; 3, Spherical crystalline notogastral pustules; 4, Ano-genital region, arrow points to soft cuticle between genital and anal openings; 5, Dorsal habitus view showing Ushaped raised notogastral ridge pattern; 6, Rostrum from anterior view; 7, Light micrograph of ano-genital region, arrow points to preanal organ; 8, Genu IV (DIC micrograph) showing normal joint, i. e. lacking retrotecta, between femur (top) and tibia.