Antrodiaetus pugnax (Chamberlin)

Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G., 2005, Mygalomorph spiders from southwestern Oregon, USA, with descriptions of four new species, Zootaxa 1058, pp. 1-34 : 32-33

publication ID 10.5281/zenodo.170130


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Antrodiaetus pugnax (Chamberlin)


Antrodiaetus pugnax (Chamberlin) View in CoL

Figs. 1 View FIGURE 1 , 4 View FIGURE 4 , 7 View FIGURE 7 , 33 View FIGURES 22 – 33 , 48 View FIGURES 47, 48

Antrodiaetus pugnax: Coyle 1971 View in CoL , 354, figs. 109–112, 124, 132, 161, 179, 207–212, 250–252, 292– 294; Niwa & Peck 2002:791; Platnick 2005 (see for complete synonymy).

Material Examined (m = male). Oregon, Jackson County, Ashland Watershed, Ashland Ranger District, Rogue River National Forest, 1998: N42°85’8.0”, W122°41’14.3” (1219– 1268 m elevation), 29 Sept. (1m); N42°8’5.7”, W122°42’24.9” (1463 m elevation), 29 Sept. (11m), 11 Oct. (4m); N42°8’5.7”, W122°41’14.3” (1317–1365 m elevation), 29 Sept. (10m), 11 Oct. (5m). Josephine County, 2001: Illinois Valley Ranger District, Siskiyou National Forest, N42°07’23”, W123°24’25” to N42°08’05”, W123°20’30” (1280–1494 m elevation), 4 Sept. (16m), 17 Sept. (6m), 9 Oct. (9m). Ashland Resource Area, Medford District, Bureau of Land Management, N42°01’34”, W123°27’42” (1646 m elevation), 4 Sept. (9m), 17 Sept. (2m), 9 Oct. (1m).

Diagnosis. The presence of a ventral prominence on tibia and metatarsus I and a group of macrosetae on the tibial I swelling ( Fig. 48 View FIGURES 47, 48 ) will separate males of this species from all others in the genus.

Abbreviated Description. With three (occasionally two) separate dorsal opisthosomal sclerotized patches; male genital plate with sclerotized parts divided, straight to slightly recurved ( Fig. 33 View FIGURES 22 – 33 ); chelicera without distodorsal projection, without setae on upper ectal surface; with prolateral brush of macrosetae on tibia I ( Fig. 48 View FIGURES 47, 48 ), 67–100% of macrosetae ensiform; tibia I with 2–9 macrosetae retrolaterally, without large heavy macrosetae ventrally; middle of tibia and metatarsus I each greatly swollen in lateral view; metatarsus I weakly sinuous, with pair (setae A–B) of distal macrosetae ventrally; tip of palpal outer conductor sclerite closely appressed to inner conductor sclerite; palpal tibia 2.26–2.42 times longer than wide.

Distribution. Oregon, southern Washington, into northwestern Idaho ( Figs. 1 View FIGURE 1 , 4 View FIGURE 4 ; Coyle 1971: map 2).

Wandering Activity. All individuals were trapped between late August and early October ( Fig. 7 View FIGURE 7 ).

Comments. Antrodiaetus pugnax was limited to the Siskiyou Mountains study areas. Within the eastern Siskiyou Mountains it was found in equal abundance in burned and unburned sites (16 in each). Within the western Siskiyou Mountains, it was restricted to plant associations within the white fir type near Oregon Caves National Monument. Of the 41 individuals collected in the latter area, 22 were in ABCO­SYMO, 14 were in ABCO­ ABMAS/QUSA2 and 5 were in ABCO­BENE2/ACTR plant associations.

All 74 individuals collected were male.














Antrodiaetus pugnax (Chamberlin)

Cokendolpher, James C., Peck, Robert W. & Niwa, Christine G. 2005

Antrodiaetus pugnax:

Coyle 1971
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