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Photo#239179
Hmmmm.... - Vitronura giselae

Hmmmm.... - Vitronura giselae
Norfolk, Virginia, USA
November 8, 2008
Size: ~2mm

Images of this individual: tag all
Hmmmm.... - Vitronura giselae Hmmmm.... - Vitronura giselae Hmmmm.... - Vitronura giselae

Moved

Vitronura giselae
Family Neanuridae.

 
I noticed that these....
seem to lack a 'furca' and have no escape mechanism. What kind of defense against predators does this Family (Neanuridae) have?

Thanks!

 
Neanuridae
indeed lack a furca.
Theire defense is chemical. They taste badly. Once a predator tasted such a colourfull and easily to spot prey, it will not easily forget the bad taste and will associate the distinct colour with bad taste. And avoid it in the future. So the defense works at the level of the population, not at individual level.

The closely related family Brachystomellidae have defense bleeding, in which an attacked specimen will bleed to dead in such a way that 1. the attacker will get caught in the sticky blood and will die eventually with its mouthsparts glued together; and 2. the other members of the colony will be warned by the 'smell' of the blood of the attacked specimen that the colony is in danger, so they can escape in time.

 
Interesting...
I did not know the color/bad taste defense worked with such small creatures. For birds and brightly colored caterpillars, yes. This is great info. Thanks for answering my question!

Now, I'm off to find more Collembola....:^)

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