Pocadicnemis pumila (Blackwall 1841), Blackwall, 1841

Paquin, Pierre & Dupérré, Nadine, 2006, The spiders of Québec: update, additions and corrections, Zootaxa 1133, pp. 1-37: 15-16

publication ID

http://doi.org/ 10.5281/zenodo.273386

publication LSID

lsid:zoobank.org:pub:6744F78C-4CF2-4697-BC43-E637483651C3

persistent identifier

http://treatment.plazi.org/id/038687FF-DC40-FF89-FEF5-FA9D829B734D

treatment provided by

Plazi

scientific name

Pocadicnemis pumila (Blackwall 1841)
status

 

Pocadicnemis pumila (Blackwall 1841)  

( Fig. 29 View FIGURES 25 – 32. 25 – 28 )

Material examined.— Canada: Québec: Rouyn­Noranda: Labyrinthe Lake [48 ° 14 ’N, 79 ° 29 ’W] 16.– 23.vi. 1996, Canopy funnel White cedar/Balsam fir forest, 3 ɗ, P. Paquin & N. Dupérré ( CPAD); Rouyn­Noranda: Labyrinthe Lake [48 ° 14 ’N, 79 ° 29 ’W] 16.– 23.vi. 1996, Malaise/flight interception trap (pan) in White cedar/Balsam fir forest, 1 ɗ, P. Paquin & N. Dupérré ( CPAD); Abitibi­Ouest: Duparquet Lake [48 ° 30 ’N, 79 ° 13 ’W] 16.– 23.vi. 1996, Malaise/flight interception trap (pan) in White cedar/Balsam fir forest, 1 ɗ, P. Paquin & N. Dupérré ( CPAD); Mont­Albert, La Haute­Gaspésie, Parc de la Gaspésie, Lac Pelletier [48 ° 55 ’N, 66 °02’W] 10.– 23.vi. 1994, pitfall in Picea mariana   bog, 1 ɗ, F. Landry ( CPAD); Baie­James (Jamésie): 122 km NNE LaSarre [49 ° 48 ’N, 78 ° 54 ’W] 15.– 22.vi. 1997, flight interception trap in mature Black spruce forest, 1 ɗ, P. Paquin & N. Dupérré ( CPAD); Baie­James (Jamésie): 122 km NNE LaSarre [49 ° 48 ’N, 78 ° 51 ’W] 06.– 15.vi. 1997, flight interception trap in old growth Black spruce forest, 1 ɗ, P. Paquin & N.

Dupérré ( CPAD); Baie­James (Jamésie): 122 km NNE LaSarre [49 ° 48 ’N, 78 ° 51 ’W] 15.– 22.vi. 1997, flight interception trap in old growth Black spruce forest, 1 ɗ, P. Paquin & N. Dupérré ( CPAD); Baie­James (Jamésie): 122 km NNE LaSarre [49 ° 48 ’N, 78 ° 51 ’W] 22.– 29.vi. 1997, flight interception trap in old growth Black spruce forest, 1 ɗ, P. Paquin & N. Dupérré ( CPAD).

Diagnosis.— Pocadicnemis pumila   is distinguished from P. a m e r i c a n a by the straight median apophysis (MA) of the male palpus ( Fig. 29 View FIGURES 25 – 32. 25 – 28 ).

Distribution.— Widespread in North America.

Remark.— Pocadicnemis pumila   is very similar to P. americana   (see Paquin & Dupérré 2003, figs 1206–1208), and these two species are commonly found in the same habitat. Millidge (1976), who described P. americana   , gave characters to distinguish males and females of the two species, but examination of several specimens and comparison with his illustrations led us to the conclusion that females are impossible to separate. Therefore, the present records are from males only. We rely on the shape of the median apophysis to distinguish the two species (straight in P. pumila   and curved in P. americana   see Fig. 30 View FIGURES 25 – 32. 25 – 28 , and Millidge 1976: figs 24 and 40) but we are not convinced that these represent disctinct species. A few specimens examined (omitted here) could have been placed in P. pumila   based on examination of the right palp and in P. americana   with the left palp. However, the two species are actually valid and we report the present records on that premise.