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Pardosa mackenziana (Keyserling, 1877)

	FAMILY: LYCOSIDAE Sundevall, 1833     Genus: Pardosa C. L. Koch, 1847         Species: Pardosa mackenziana (Keyserling, 1877)
	Author: Pinzon, Jaime Page views: 3,465 Write a Review: Visitor Comments: (0)

General Comments: This species co-occurs with Pardosa moesta, but depending on the degree of canopy closure, densities of these two species differ (P. mackenziana more abundant in closed canopy stands while P. moesta more abundant in open stands) (Buddle et al., 2000).

Family Common Name:  wolf spiders
Genus Common Name:  thinlegged wolf spiders
Species Common Name:  none

Global Distribution: USA, Canada, Alaska
Nearctic States & Provinces: AB YT CO MT NH WA WY

Seasonality Specimen Search Specimen list 305, 409

Feeding Guild:^† ground runners
^†Feeding guild when noted defined by Uetz, G. W., J. Halaj, and A. B. Cady. 1999. Guild structure of spiders in major crops. Journal of Arachnology 27:270-280. PDF
Habitat (published): This is one of the most common boreal species and can be found in many different habitats, such as Spruce, Lodgepole pine, Oak, Poplar and Birch forests, Salt marshes, sphagnum bogs and along shores of seas and lakes (Dondale & Redner, 1990; Nordstrom & Buckle, 2002). Although this species has general habitat requirements, research has shown a higher abundance of P. mackenziana on surface of logs than in surrounding habitats, especially females carrying egg sacs. These females are probably basking in warmer microclimates (Buddle, 2001). This species prefers open areas in the forest having negative correlation with shade (Buddle, 2000).
Habitat (<30 randomly chosen specimens): Aspen, grass, willow; Base camp. Pine forest; Mixed open Forest; Lodgepole Pine Burnt Forest; Old growth; Ridge top; Lake Shore; Mixed Coniferclosed Forest; Dry muskeg; Pine forest; Talus Slope; Black spruce/Ledum bog; Beach; Rock-Fall; Beach ridge; Poplar, cranberry; Deciduous-dominant forest, 20% standing trees; Mixedwood forest; Lodgepole Pine closed Forest; Dry Grassland; Birch point; Rock;

Life & Natural History: P. mackenziana has been reported as biennial (Buddle, 2000), overwintering one time as immature and one time as subadult having the reproductive season between early May to late June.

Image(s) of Habitus:

Description: Carapace broad, dark brown with a dorso-medial longitudinal lighter band which is constricted in its anterior third, no marginal bands present. Mouthparts: Chelicerae and fangs the same color as carapace; labium, endites slightly lighter in color with a pale anterior border. Sternum light brown. Femora and tibia dusky with three inconspicuous lighter rings; patella, metatarsi and tarsi brown. Abdomen with no markings, dorsally dark, lighter ventrally. Palp: Medial apophysis with two projections, anterior projection longer, curved and with several minute “teeth” on its tip, posterior projection smaller, rounded (rather conical); terminal apophysis slender and curved, with internal border toothed.

Male Dimensions: A = 2.97 mm  A+B = 5.91 mm  C = 2.36 mm

Image of External Male Genitalia: Credit: Pinzon, Jaime

Description: Coloration pattern similar as in males. Epigynum: Longer than wide, with two lateral dark swellings. Lateral margins diverging in their posterior end, median septum with anterior part long and narrow and posterior part broader and ridged.

Female Dimensions: A = 3.11 mm  A+B = 6.85 mm  C = 2.45 mm

Image of Epigynum: Credit: Pinzon, Jaime

Lycosa mackenziana Keyserling 1877 urn:lsid:ubio.org:namebank:2069007

Pardosa mackenziana Keyserling 1877 urn:lsid:ubio.org:namebank:9737623

Pardosa mackenziana Chamberlin 1908 urn:lsid:ubio.org:namebank:9735516

Pardosa mackenziana Kaston 1948 urn:lsid:ubio.org:namebank:2069009

Pardosa metlakatloides Schenkel 1951 urn:lsid:ubio.org:namebank:2069010

Pardosa mackenziana Lowrie & Dondale 1981 urn:lsid:ubio.org:namebank:2069011

Pardosa mackenziana Dondale & Redner 1990 urn:lsid:ubio.org:namebank:2069012

Pardosa mackenziana Paquin & Dupérré 2003 urn:lsid:ubio.org:namebank:2011344

Pardosa mackenziana Vogel 2004 urn:lsid:ubio.org:namebank:9738327

Chamberlin, R. V. 1908. Revision of North American spiders of the family Lycosidae. Proc. Acad. nat. Sci. Philad. 60: 158-318.

Dondale, C. D. & J. H. Redner. 1990. The insects and arachnids of Canada, Part 17. The wolf spiders, nurseryweb spiders, and lynx spiders of Canada and Alaska, Araneae: Lycosidae, Pisauridae, and Oxyopidae. Research Branch, Agriculture Canada, Publ. 1856: 1-383.

Kaston, B. J. 1948. Spiders of Connecticut. Bull. Conn. St. geol. nat. Hist. Surv. 70: 1-874.

Keyserling, E. 1877. Ueber amerikanische Spinnenarten der Unterordnung Citigradae. Verh. zool.-bot. Ges. Wien 26: 609-708.

Lowrie, D. C. & C. D. Dondale. 1981. A revision of the nigra group of the genus Pardosa in North America (Araneae, Lycosidae). Bull. Am. Mus. nat. Hist. 170: 125-139.

Paquin, P. & N. Dupérré. 2003. Guide d'identification des araignées de Québec. Fabreries, Suppl. 11 1-251.

Schenkel, E. 1951. Spinnentiere aus dem westlichen Nordamerika, gesammelt von Dr. Hans Schenkel-Rudin. Zweiter Teil. Verh. naturf. Ges. Basel 62: 24-62.

Vogel, B. R. 2004. A review of the spider genera Pardosa and Acantholycosa (Araneae, Lycosidae) of the 48 contiguous United States. J. Arachnol. 32: 55-108.

^‡Nomenclature and taxonomic references from the World Spider Catalog

Buddle, C. M. 2001. Spiders (Araneae) associated with downed woody material in central Alberta, Canada. Agricultural and Forest Entomology 3: 241-251.

Buddle, C. M. 2000. Life history of Pardosa moesta and Pardosa mackenziana (Araneae, Lycosidae) in central Alberta, Canada. Journal of Arachnology 28: 319-328.

Buddle, C. M., J. R. Spence, and D. W. Langor. 2000. Successsion of boreal forest spider assemblages following wildfire and harvesting. Ecography 23: 424-436.

Dondale, C. D. & J. H. Redner. 1990. The insects and arachnids of Canada, Part 17. The wolf spiders, nurseryweb spiders, and lynx spiders of Canada and Alaska, Araneae: Lycosidae, Pisauridae, and Oxyopidae. Research Branch, Agriculture Canada, Publ. 1856: 1-383.

Nordstrom, W. & D. Buckle. 2002. Spider records from four wildland parks in northeastern Alberta. Report prepared for: Alberta Natural Heritage Information Centre, Parks and Protected Areas Division, Alberta Community Development. 34 pp. Accessible at: http://www.canadianarachnology.org/data/alberta_spiders/Nordstrom%20&%20Buckle%202002.pdf.

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