tlawson's Favorites
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leptoniaΗμερομηνία
Ιανουάριος 2022Τόπος
Channel Islands National Park, Channel Islands, Santa Barbara County, UCNRS, US-CA, US (Google, OSM)
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tlawsonΗμερομηνία
Σεπτέμβριος 2021Περιγραφή
Empty shells found exposed beneath Monterey cypress trees
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tlawsonΠεριγραφή
Purchased from an old collection. Data slip indicated they were collected among vegetation in field along Hwy. 58 near Tehachapi, Kern County, CA.
Shells have incised sculpture indicative of the Charodotes subgenus. Both shells are relatively small 20 and 22mm.
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anudibranchmomΠεριγραφή
Rain earlier in the day, temp in the 30s at night.
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anudibranchmomΠεριγραφή
Rain earlier in the day, temp in the 30s at night.
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alice_abelaΠεριγραφή
Carrizo Plain, San Luis Obispo County, California
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tlawsonΠεριγραφή
Empty shells observed between granite boulders on rocky slopes. @cedric_lee @davegoodward I didn’t want to disturb the habitat by moving rocks but based on the empty shells observed in just 10 minutes looking between boulders I’d say this isolated hill supports a healthy colony!
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anudibranchmomΠεριγραφή
Prettiest one of the day, found under plastic kiddie pool discarded in a culvert. :-) Or Bigtree Shoulderband Snail (Helminthoglypta napaea)? I cannot distinguish these @tlawson!
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william_hoyerΗμερομηνία
Ιανουάριος 2021Περιγραφή
In a rotting Leptosyne stem.
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tlawsonΗμερομηνία
Δεκέμβριος 2004Περιγραφή
Bandless form of Helminthoglypta contracostae
These empty shells were found among dead or dormant dill plants at Point Isabel.
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tlawsonΠεριγραφή
I believe these are Helminthoglypta salviae mina based on their diminutive size and flattened spire. Shells range between 15 - 17 mm. I’m just unsure if the species is found this far east of the type locality.
@cedric_lee @davegoodward Could any of you confirm the identity?
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tlawsonΠεριγραφή
Empty shells exposed on loose talus slopes. Habitat photo included.
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tlawsonΠεριγραφή
Helminthoglypta simians Hanna & Smith, 1937
Off Hwy 41 Near Cottonwood Pass, Kern Co., California. This species is in the subgenus Charodotes.
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drivers-pankratzΤόπος
ΙδιωτικόΠεριγραφή
drp2018-22, mature. Along path on rock
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davegoodwardΠεριγραφή
Three shells deep in talus within 5 feet of each other. The one on the right in photo 3 is very flat, while the one on the left has a high spire. That's a lot of variation in one local population. I doubt if there is more than one species there.
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finaticΠεριγραφή
Riverside County, California, US
The spire is reduced on this shell compared to what I think of as Sonorelix rixfordi (the only Helminthoglyptidae that I see as being in this mountain range. It looks more like Eremarionta morongoana which is present one mountain range away.
Found exposed in a rocky wash.
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finaticΠεριγραφή
BioBlitz organized by the Natural History Club at San Diego State University
Santa Margarita Ecological Reserve
Riverside County, California, US
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jameshinsonΗμερομηνία
Δεκέμβριος 2019Περιγραφή
I believe they were exchanging eggs and sperm.
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davegoodwardΠεριγραφή
Might be Eremarionta morongoana or close to it. Found in a transition area between morongoana and rowelli. Similar shells were just south of Chiriaco Summit.
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p_herreraΗμερομηνία
Φεβρουάριος 2016Περιγραφή
Large live land snail ~18mm. In granitic soil in blue oak woodland.
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p_herreraΠεριγραφή
Found shell among burned brush in rocky soils on private land within 2 miles of Shasta Lake, Shasta County, California.
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rjadams55Περιγραφή
I found this snail in Tuolomne County on the trail to the South Grove sequoias at 4650 ft elevation. The habitat was mature pine forest with a scattering of large Big Leaf Maples.
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tknΠεριγραφή
Seen along the Stanislaus River (picnic area) in Big Trees State park in wet, rotted wood.
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jasperdecuirΠεριγραφή
I’ve been seeing a lot of these snails under logs but I don’t know what they are.
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davegoodwardΠεριγραφή
Resting in the upper inch of a woodrat nest in a rock crevice. Right across the Mohave River from a population of Victorville Shoulderband (which was unfortunately fenced). The photos show the precipitated cement dust from the nearby cement plant, which doesn't seem to harm the snails.
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tlawsonΠεριγραφή
I’ve often observed this miniature subspecies on the western portion of the county near Tomales Bay. Today I observed several of these diminutive arrosas (1 inch or less when fully matured) here at China Camp so it’s nice to know that this subspecies is also found along the eastern portion of the county as well.
Snails observed among wood debris beneath bay laurel trees along the shores of San Pablo Bay.
