leptocercal

from The Collaborative International Dictionary of English v.0.48

Leptocercal \Lep`to*cer"cal\, (l[e^]p`t[-o]*s[~e]r"kal),
Leptocercous \Lep`to*cerc"ous\ (l[e^]p`t[-o]*s[~e]rk"[u^]s),a.
   (Zool.)
   Having a long slender tail.
   [PJC]