Beetles of the Cuyamaca Mountains
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  • Beetle Families 1
    • Carabidae
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  • Beetle Families 2
    • Cantharidae
    • Bostrichidae
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Beetles of Imperial County


Carabidae
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Callisthenes affinis
det. P. Messer


Algodones Dunes, south of Glamis, California

Many of this species were present in late September after a  summer of heavy monsoonal rains.
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Callisthenes affinis

Algodones Dunes, south of Glamis, California
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Callisthenes affinis

Algodones Dunes, south of Glamis, California

Mating pair, with the female pursuing a Diplotaxis sp.
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Calosoma parvicolle

Algodones Dunes, north of Glamis, California

Several of this species were seen in the spring of 2017 after relatively heavy rains.

Geotrupidae
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Bolbocerastes regalis
Male

Yuha Desert, California

Came to a black light after dark. 
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Bolbocerastes imperialis
Male
det. R. McPeak


Algodones Dunes, south of Glamis, California

Came to a black light after dark. Palo Verde habitat.
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Bolbocerastes imperialis
Male
det. R. McPeak


Algodones Dunes, California

Came to a black light after dark. Palo Verde habitat.
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Bolbocerastes imperialis
Male

Algodones Dunes, California


Came to a black light after dark. Palo Verde habitat.
The sequence below is of a female Bolbocerastes imperialis digging into what appeared to be an already-constructed tunnel, with a blocked entrance. It had rained the weekend before and there was moist sand just below the surface. Algodones Dunes, California.

Scarabaeidae
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Phyllophaga mucorea

Algodones Dunes, California
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Phyllophaga mucorea, mating pair

Algodones Dunes, north of Glamis, California

In Dune Evening Primrose.
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Polyphylla cavifrons
Male

Picacho State Recreation Area, California
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Pseudocotalpa sonorica

Algodones Dunes, California

​With hairy elytra.
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Pseudocotalpa andrewsi

Algodones Dunes, California

No hair visible on elytra.
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​     Pseudocotalpa andrewsi

      Algodones Dunes, California

       No hair visible on elytra.

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Megasoma sleeperi
Male

Algodones Dunes, California


NOTE: Please do not ask me to collect specimens of this species. Thank you.
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Megasoma sleeperi
Male

Algodones Dunes, California
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Megasoma sleeperi
Female

Algodones Dunes, California

Buprestidae
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Acmaeodera pubiventris yumae

Algodones Dunes, California

det. R. Westcott

Trogossitidae
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Temnoscheila sp.

Algodones Dunes, California

Came to a black light after dark. Palo Verde habitat.
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Temnoscheila sp.

Algodones Dunes, California

Feeding on Diplotaxis sp. These are predatory beetles and can deliver a good nip to a careless human being!

Coccinelidae
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Seven-spotted Lady Beetle, Coccinella septempunctata

Algodones Dunes, California


On Palo Verde blossom in the spring.

Tenebrionidae
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Asbolus verrucosus

Algodones Dunes
, California
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Asbolus laevis

Algodones Dunes
, California
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Cryptoglossa muricata

Algodones Dunes, California
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Edrotes arens

Algodones Dunes, California

Found resting on the sand at dusk, along the edge of the dunes.
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Embaphion depressum

Algodones Dunes, California
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Embaphion depressum

Algodones Dunes, California
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Embaphion depressum

Algodones Dunes, California
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Stenomorpha hirsuta

Algodones Dunes, California

This individual visited an oatmeal trail laid out in the dunes, on the eastern edge.
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Stenomorpha confluens

Algodones Dunes, California

This individual was wandering on the sand surface below Palo Verdes at night. These are often the conditions that I find this species in.

Meloidae
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Cysteodemus armatus

​South of Ocotillo, California


Found clinging to a creosote bush in the spring.
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Cysteodemus armatus

Algodones Dunes, California
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Cystodemus armatus

Algodones Dunes, California

Mating pair.
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Eupompha elegans

Algodones Dunes, California

This was one of quite a few seen in March, 2017, after a wet winter.
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Lytta melaena

Algodones Dunes, California

I have only seen this species at these dunes in 2005 and 2017, in both cases after unusually wet winter/spring seasons.
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Lytta melaena mating pair

Algodones Dunes, California
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Phodaga alticeps

Algodones Dunes, California

This species seems to appear more reliably after wet winter/spring seasons. This is the defense display that it makes when feeling threatened.

Cerambycidae
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Nothopleurus lobigenis
Male

Winterhaven, California
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​Nothopleurus lobigenis

Female

Picacho State Recreation Area, California
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Osmidus guttatus
Male

Picacho State Recreation Area, California
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Osmidus guttatus
Female

Algodones Dunes, California


Came to a black light after dark. Palo Verde habitat.
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Susuacanga falli

Algodones Dunes, California

This individual came to a black light near the edge of the dunes.
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Achryson surinamum
Male

​Algodones Dunes, California

Males and females were abundant at black light in mid-September. This was one of them.
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Achryson surinamum
Female

Algodones Dunes, California

Males and females were abundant at black light in mid-September. This was one of them.

Chrysomelidae
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Probably Altica sp. (flea beetle)

Algodones Dunes, California
​

This individual and others found on and near the sand in March 2017.

Curculionidae
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Apleurus albovestitus

Algodones Dunes, California

This was one of quite a few that were out on the dunes in March of 2017, following heavy winter and spring rains.
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