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Genus Aculepeira

Spider - Aculepeira - female Orb Weaver - Aculepeira packardi Spider, alpine talus, Maine - Aculepeira carbonarioides Yellow and black orb-weaver - Aculepeira carbonarioides - male - female Orb spider--possibly Aculepeira? - Aculepeira packardi Spider - Aculepeira packardi yellow orbweaver  - Aculepeira packardi - female Alpine orb-weaver - Aculepeira carbonarioides - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Araneidae (Orb Weavers)
Genus Aculepeira
Numbers
3 Species in the US & Canada.
Identification
Females:

A. aculifera -

A. carbonarioides -


A. packardi -


undescribed prairie species #1 -
Range
A. aculifera - USA to Guatemala - CO, NM
A. carbonarioides - USA, Canada, Alaska - AB, AK, BC, CO, NH, NT, PQ, UT, WY, YT
A. packardi - North America - AB, AZ, BC, CA, CO, ID, MB, MT, NF, NM, NT, NV, OR, PA, UT, WA, WY, YT
undescribed prairie species #1 & #2 - Species #1 is found in pretty much all of the western WA lowlands, and presumably beyond but I haven't collected in OR or BC. Only in grasslands (but it turns up in some pretty disturbed grasslands). Going up into the mountains you get true A. packardii (and, in the very high North Cascades, carbonarioides); species #2 is in the Columbia Basin. ~ Rod Crawford
Remarks
A. aculifera description and drawings can be found in The Neotropical and Mexican Species or the Orb-Weaver Genera Araneus, Dubliepeira, and Aculepeira.

More drawings of A. aculifera(1)
Internet References
~ kaston.transy.edu - Ranges.
Works Cited
1.Keys to the Genera of Araneid orbweavers of the Americas
H.W. Levi. 2002. The Journal of Arachnology 30:527–562.