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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Adephaga » Whirligig Beetles (Gyrinidae) » Gyrininae » Dineutus

Photo#1262224

Copyright © 2016 Isidro

Dineutus sp. - Dineutus

Captive, San Diego County, California, USA
Size: about 20 mm body lenght

These whirlgig beetles were captive both at San Diego Zoo (Insect House) as at TheNat (San Diego Natural History Museum). Firts place tagged them as "Gyrinus sp" (clearly incorrect, they're much bigger than Gyrinus, and flatter and duller), and the last place tagged as Gyrinidae. I managed to get the genus, Dineutus, and even found a key but it asks first for know if it's male or female, so I can't apply the key. Maybe the only solution for get the species, is ask directly to TheNat staff???

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Dineutus sp. - Dineutus

Dineutus sp. - Dineutus

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Contributed by Isidro on 22 July, 2016 - 7:37am
Last updated 22 July, 2016 - 12:00pm

Moved, Dineutus sp.

Moved from ID Request.

… Blaine Mathison, 22 July, 2016 - 12:00pm

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Dineutus

Also, were these local (i.e. from California) or brought in from elsewhere? My guess is local.

… Brady Richards, 22 July, 2016 - 9:29am

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I found a paper about NA Dine

I found a paper about NA Dineutus and concluded that this only can be Dineutus sublineatus for sure, because of the big size, strong striation on elytra and distribution (as is unlikely that the zoo brought these insects from remote locations). D. sublineatus and D. solitarius are the only species that can be found in California and D. sublineatus is the only in San Diego area. D. solitarius is much smaller. All other species are Eastern, Caribbean or from Southern Mexico and Central America. The specimens shown in the photos would fit in size more with a big undescribed species from Mexico than with D. sublineatus, but I think that this is a minor issue.

… Isidro, 13 April, 2017 - 3:40am

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I thinks local too. At least

I thinks local too. At least the ones in Museum, as there was many other amphibian, reptile and invertebrate aquarium/terrarium all of them with native species. However in the Zoo, the Insect House exhibited species from all over the world, so who knows?

… Isidro, 22 July, 2016 - 10:08am

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