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Photo © Keith Wandry, all rights reserved
Grant Ranch Park, San Jose, Ca. (Google, OSM)
37.3393857, -121.8949555
Accuracy: 30644m
open

Description

Tarantula, walking down the road.
Counted 4 on the road on 9/2 and saw 4 on the road on 9/1 - all of them between the summit of Mount Hamilton and Grant Ranch Park. Seems mating season has begun...

Tarantula
Sep. 03, 2012 23:28:04 -0700
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Comments & Identifications

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Tarantulas - Photo (c) Gertrud K., some rights reserved (CC BY-NC-SA)
kejwa's ID: Tarantulas (Family Theraphosidae)
Posted by kejwa about 2 years ago (Flag)
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Please consider to contact phd candidate Chris Hamilton, if you are willing to collect a couple of specimens for his scientific research to revise the genus in the eastern USA. http://www.8legs2fangs.com/Site/Aphonopelma.html

Posted by sjl197 about 2 years ago (Flag)
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California Ebony Tarantula - Photo (c) Marcel Holyoak, some rights reserved (CC BY-NC-ND)
bob-dodge's ID: California Ebony Tarantula (Aphonopelma eutylenum)
Posted by bob-dodge about 2 years ago (Flag)
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There are currently several described species for California, and the type of E.eutylenum is from San Diego, so it's not best to assume that. From the area around San Fransisco are currently described A.brunneum (from Jasper ridge) and A.smithi (from Patterson/king City)

Posted by sjl197 about 2 years ago (Flag)
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Tarantulas - Photo (c) matt knoth, some rights reserved (CC BY-NC-ND)
sjl197's ID: Tarantulas (Genus Aphonopelma)
Posted by sjl197 about 2 years ago (Flag)
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Tarantulas - Photo (c) matt knoth, some rights reserved (CC BY-NC-ND)
screws's ID: Tarantulas (Genus Aphonopelma)
Posted by screws almost 2 years ago (Flag)
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Tarantulas - Photo (c) matt knoth, some rights reserved (CC BY-NC-ND)
kejwa's ID: Tarantulas (Genus Aphonopelma)
Posted by kejwa almost 2 years ago (Flag)
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Aphonopelma iodius - Photo (c) matt knoth, some rights reserved (CC BY-NC-ND)
kejwa's ID: Aphonopelma iodius, a member of Tarantulas (Genus Aphonopelma)
Posted by kejwa almost 2 years ago (Flag)
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But A. iodius is from Washington, UT. Following Prentice (1997) that ranges through similar arid zone around Las Vegas NV, and CA through Baker, Barstow and perhaps Lancaster. The Sierra Nevada provide a massive barrier from coastal CA, and there is massively different ecology/habitat around the much less arid San Fransisco/San Carlos. I see no reason to justify identifying this with A. iodius.

Posted by sjl197 almost 2 years ago (Flag)
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Tarantulas - Photo (c) matt knoth, some rights reserved (CC BY-NC-ND)
kueda's ID: Tarantulas (Genus Aphonopelma)

Basically the taxonomy of our tarantulas here in the Bay Area is largely unresolved, to my knowledge (right, sjl197?). A genus at the ID level is probably the most appropriate approach.

Posted by kueda almost 2 years ago (Flag)
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If it's absolutely dire, I bet Tom Prentice at UCR would tell you which species.

Posted by screws almost 2 years ago (Flag)
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Tarantulas - Photo (c) matt knoth, some rights reserved (CC BY-NC-ND)
kejwa's ID: Tarantulas (Genus Aphonopelma)
Posted by kejwa over 1 year ago (Flag)
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Thanks for all the feedback! You all know more about them than I do - I just see them around the same time each year when they come out while I'm on my way up to the Observatory I've bumped it back up to just the Genus level. Will read up more details about them and be ready for this years migration!

Posted by kejwa over 1 year ago (Flag)
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Identification Summary

Tarantulas - Photo (c) matt knoth, some rights reserved (CC BY-NC-ND)
kejwa's ID: Tarantulas (Genus Aphonopelma)
Tarantulas - Photo (c) matt knoth, some rights reserved (CC BY-NC-ND)
Community ID: Tarantulas (Genus Aphonopelma)
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sjl197 screws kueda 3 people agree
California Ebony Tarantula - Photo (c) Marcel Holyoak, some rights reserved (CC BY-NC-ND)
bob-dodge's ID: California Ebony Tarantula (Aphonopelma eutylenum)

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Data Quality Assessment

Community-supported ID? Yes
4 people agree
0 people disagree
Date? Yes
Georeferenced? Yes
Photos or sounds? Yes
Is the organism wild/naturalized? Unknown
What do you think?
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Does the location seem accurate? Unknown
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Does the date seem accurate? Unknown
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Observation © Keith Wandry
Cc-by-nc_small some rights reserved

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