suranal

adj

1. Above the anus or a body part associated with the anus.

   “There are three suranal plates, two along the axis connecting ambulacrum III with interambulacrum 5, and one to the right of this axis, towards ocular plate II.”

   “The species which have suranal ducts are in genera that have frame ducts in the second-stage males, and therefore have been found consistentiy only in the Chionaspidini.”

   “Confusion may occur with some Saturniidae - which however, have biordinal crochets (usually triordinal in butterfly larvae with scoli) - also no scoli on the head and no suranal 'tails'.”

   “Larvae use setiform thoracic legs and a suranal hook to help propel themselves along, aided by silk.”