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Water Penny

Sclerocyphon sp.


A small, very active dark beetle with a slightly dorso-ventrally flattened body. The elytra showed two narrow bands of pale specks. The pronotum which was the same colour as the elytra had a pair of short pale streaks on either side of midline arising from the posterior margin. The lateral margins had pale flecks. The elytra stopped short of the terminal abdominal segments. Head was small with relatively large closely placed eyes. Antennae were segmented.
Legs were thin with feeble tarsi.


Flew in towards the garden lights on a warm night and then disappeared under some wood.


Unfortunately, I could not get much detail in my shots.
My thanks to phaptor for the ID.
Thanks also to Mark for the link
has interesting information about this beetle - adults are terrestrial but larvae hatch, develop and live in water, scraping food off rocks.
Family: Psephenidae
Subfamily: Eubriinae

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Leuba Ridgway
Leuba Ridgway 3 years ago

Yeh ! got an ID..Thanks so much Boris. I did think of water beetle given that some of the features were similar to a few we found around here, a few years ago.

Haven't had any more visits from the adult, which makes this special for me.

Mark Ridgway
Mark Ridgway 3 years ago

Thanks so much Boris. Some features make some sense now.

thaptor 3 years ago

Have checked suspicion, which proved true:
= Psephenidae, Sclerocyphon sp.

Leuba Ridgway
Leuba Ridgway 3 years ago

Thanks. Patterns on elytra look like a dermestid. Antennae and pronotum look different. Will check again.

Mark Ridgway
Mark Ridgway 3 years ago

Have you checked dermestids maybe Trogoderma genus?.. maybe needs to be more hirsuite.

Leuba Ridgway
Spotted by
Leuba Ridgway

Victoria, Australia

Spotted on Jan 6, 2018
Submitted on Jan 10, 2018

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