California Biota Home Page ....Animals ....Arthropoda ....Arachnida....Scorpiones

Serradigitus wupatkiensis with first-instar offspring on her back.  Note the ordered
arrangement, wherein each first-instar scorpion is facing forward and is in contact
with the cuticle.  The chelicerae and pedipalps are still largely undeveloped and cannot
be used to capture or manipulate prey.

Serradigitus gertschi striatus with second-instar offspring on her back.  At this age.
the young scorpions are ready to disperse, and have abandoned the orderly
arrangement characteristic of first-instar offspring in members of this genus. 
The pedipalps and chelicerae are now functional, and a pattern of 
pigmentation is now eveident.