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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Scarab, Stag and Bess Beetles (Scarabaeoidea) » Bess Beetles (Passalidae) » Odontotaenius » Horned Passalus (Odontotaenius disjunctus)
Photo#100858
Passalid larvae - Odontotaenius disjunctus
Copyright © 2007 Sean McCann

Passalid larvae - Odontotaenius disjunctus
Payne's Prairie SP, Alachua County, Florida, USA
April 1, 2007
Pretty sure these are Odontotaenius disjunctus Larvae. Mama was around. Not sure if the dark things are eggs though.
They have the same mites on them as the adults.
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Contributed by Sean McCann on 1 April, 2007 - 1:34pm
Last updated 2 April, 2007 - 7:38am

Young ones!
Here are some older passalid larvae I photographed in Ecuador.
… Jim McClarin, 1 April, 2007 - 2:59pm login or register to post comments

 
Eggs
I also think that they must be eggs, I've just posted a picture with some, see here. Hence your larvae must be first instars, freshly hatched probably.

Lovely hairs on the larva's body. Excellent picture. Mine were taken not too far away though.
… Maria Fremlin, 6 September, 2007 - 4:24am login or register to post comments

 
...
Thanks! Good to see my hunch was correct!
… Sean McCann, 6 September, 2007 - 1:45pm login or register to post comments

 
It was interesting to see tha
It was interesting to see that both our finds were at the same developmental stage.
The eggs are huge, aren't they? This raises several questions, mainly how big are they inside the female?
I've read in The evolution of social behavior in Passalidae, Jack C. Schuster and Laura B. Schuster, in The Evolution of Social Behaviour in Insects and Arachnids that they produce 2 to 4, rarely 6, eggs per day, and nests usually have fewer than 35 eggs. Now this is a lot, don't you think?
It would be interesting if someone dissected a female early in the Spring, just an idea... Alas I can't do it myself.
… Maria Fremlin, 7 September, 2007 - 2:17am login or register to post comments

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