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Photo © jeneesmith, all rights reserved
Los Altos, CA (Google, OSM) Details Hide details

Description

We found this weird beetle outside our front porch.

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Comments & Identifications

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This is probably Polyphylla decimlineata, the most widespread and common California species. There are 14 species of Polyphylla in California and I don't have a guide that covers them all, so I can't say what others might have a similar appearrance. i think P. nigra and P. crinita have stripes too, but I'm not sure.

Posted by barbarab about 5 years ago (Flag)
462 thumb
Lined June Beetles - Photo (c) Celeste Ramsay, some rights reserved (CC BY-NC-ND)
barbarab's ID: Lined June Beetles (Genus Polyphylla)
Posted by barbarab about 5 years ago (Flag)
933 thumb
Lined June Beetles - Photo (c) Celeste Ramsay, some rights reserved (CC BY-NC-ND)
invertboy's ID: Lined June Beetles (Genus Polyphylla)
Posted by invertboy about 5 years ago (Flag)
933 thumb

Agree with P. decemlineata, but there are a few other striped ones as well that you can see here.

Posted by invertboy about 5 years ago (Flag)
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Lined June Beetles - Photo (c) Celeste Ramsay, some rights reserved (CC BY-NC-ND)
jeneesmith's ID: Lined June Beetles (Genus Polyphylla)
Posted by jeneesmith about 5 years ago (Flag)
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Ten-lined June Beetle - Photo (c) Celeste Ramsay, some rights reserved (CC BY-NC-ND)
zabbey's ID: Ten-lined June Beetle (Polyphylla decemlineata)
Posted by zabbey almost 5 years ago (Flag)
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Lined June Beetles - Photo (c) Celeste Ramsay, some rights reserved (CC BY-NC-ND)
jeneesmith's ID: Lined June Beetles (Genus Polyphylla)
Lined June Beetles - Photo (c) Celeste Ramsay, some rights reserved (CC BY-NC-ND)
Community ID: Lined June Beetles (Genus Polyphylla)
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barbarab invertboy 2 people agree
Ten-lined June Beetle - Photo (c) Celeste Ramsay, some rights reserved (CC BY-NC-ND)
zabbey's ID: Ten-lined June Beetle (Polyphylla decemlineata)
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Observation © jeneesmith
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