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Arctobius agelenoides (Emerton, 1919)

	FAMILY: AMAUROBIIDAE Thorell, 1870     Genus: Arctobius Lehtinen, 1967         Species: Arctobius agelenoides (Emerton, 1919)
	Author: Shorthouse, David P. Page views: 865 Write a Review: Visitor Comments: (0)

General Comments: Specimens have also been collected in Finnish and Russian Lappland and are indistinguishable from those in North America.

Family Common Name:  hackledmesh weavers
Genus Common Name:  none
Species Common Name:  none

Global Distribution: Holarctic
Nearctic States & Provinces: AB MB SK YT CO MT

Specimen Search Specimen list 360, 52

Feeding Guild:^† sheet web builders
^†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): under rocks in talus slopes, under stones in dense coniferous woods, under stones on limestone outcrops in mountains, bogs, moss
Habitat (<30 randomly chosen specimens): Moss. Spruce woods; Willow, alder swamp; Basin fen and surrounding Picea mariana woods; Moss. Spruce/aspen forest; Webs in moss. Spruce, poplar woods; Sifting moss. Pine/aspen forest; Spruce woods; Spruce woods. Female and young together in web; On snow. Forest; Pine forest; Birch, spruce, rock; Spruce/poplar woods; Moss. Pine/aspen forest; Aspen forest; Poplar, cranberry; Webs in moss. Picea mariana forest; Spruce forest; Base camp. Pine forest;

Life & Natural History: Males have been collected from July to November and females from May to November. Food consists of ants and other spiders. Egg sacs have been collected in July and September. Members of this species are aggressive and will attack anything approaching the entrance of their retreats.

Seasonality of Contributed Specimen Records:

Image(s) of Habitus:  email an image

Description: Carapace thoracic region edged with pale orange yellow and its center mottled and streaked light brown. Cephalic region dark brown to yellow from clypeus to dorsal, posterior end. Legs darkened distally and much the same as edge of thoracic region of carapace. May also have pale annulations on dorsal sides from patellae to tips. Chelicerae dark brown and may be darker than sternum. Opisthosoma light brown ventrally, darkened dorsally to black.

Male Dimensions: A = 3.7 mm  A+B = 8 mm  C = 2.6 mm

Image of External Male Genitalia: email an image

Description: As male.

Female Dimensions: A = 4.5 mm  A+B = 10 mm  C = 3 mm

Image of Epigynum: email an image

Descriptions Source:
Leech, R. E. 1972. A revision of the Nearctic Amaurobiidae (Arachnida: Araneida). Mem. ent. Soc. Can. 84: 1-182.

Amaurobius agelenoides Emerton 1919 urn:lsid:ubio.org:namebank:2081995

Arctobius agelenoides Emerton 1919 urn:lsid:ubio.org:namebank:9737832

Hesperauximus agelenoides Chamberlin 1947 urn:lsid:ubio.org:namebank:2081997

Hesperauximus agelenoides Bishop 1949 urn:lsid:ubio.org:namebank:2081998

Arctobius agelenoides Lehtinen 1967 urn:lsid:ubio.org:namebank:2081999

Arctobius agelenoides Leech 1972 urn:lsid:ubio.org:namebank:9735887

Arctobius agelenoides Palmgren 1977 urn:lsid:ubio.org:namebank:2082001

Arctobius agelenoides Danilov 1994 urn:lsid:ubio.org:namebank:2082002

Arctobius agelenoides Almquist 2006

Almquist, S. 2006. Swedish Araneae, part 2--families Dictynidae to Salticidae. Insect Syst. Ecol., Suppl. 63: 285-601.

Bishop, S. C. 1949. Spiders of the Nueltin Lake Expedition, Keewatin, 1947. Can. Ent. 81: 101-104.

Chamberlin, R. V. 1947. A summary of the known North American Amaurobiidae. Bull. Univ. Utah 38(8): 1-31.

Danilov, S. N. 1994. Cribellate spiders (Aranei, Cribellatae) of Transbaicalia. Ent. Obozr. 73: 200-209.

Emerton, J. H. 1919. New spiders from Canada and the adjoining states, No. 2. Canad. Ent. 51: 105-108.

Leech, R. E. 1972. A revision of the Nearctic Amaurobiidae (Arachnida: Araneida). Mem. ent. Soc. Can. 84: 1-182.

Lehtinen, P. T. 1967. Classification of the cribellate spiders and some allied families, with notes on the evolution of the suborder Araneomorpha. Ann. Zool. Fenn. 4: 199-468.

Palmgren, P. 1977. Die Spinnenfauna Finnlands und Ostfennoskandiens. VIII. Argyronetidae, Agelenidae, Hahniidae, Dictynidae, Amaurobiidae, Titanoecidae, Segestriidae, Pholcidae und Sicariidae. Fauna fenn. 30: 1-50.

^‡Nomenclature and taxonomic references from the World Spider Catalog

Aitchison-Benell, C. W. & C. D. Dondale. 1990. A checklist of Manitoba spiders (Araneae) with notes on geographic relationships. Naturaliste can. 117: 215-237.

Leech, R. E. 1972. A revision of the Nearctic Amaurobiidae (Arachnida: Araneida). Mem. ent. Soc. Can. 84: 1-182.

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