Download PDF as one large file - AToL Decapoda

684 Family Pinnotheridae
6. (5) Prehensile edge of immovable finger horizontal of inclined at less than 30° angle... 7
Prehensile edge of immovable finger inclined! at more than 40° angle (juvenile male).
10
7. (6) Third walking leg with greatest length of merus more than twice greatest width,
posterodistal end of ischium prolonged into stout curved spine (may be lacking in
juvenile) ...; P. retinens
Third walking leg with greatest length of merus less than twice greatest width,
ischium lacking stout curved spine .....; :....;.;...;..... * 8
8. (7) Outer surface of chela with numerous scattered granules and long hairs above midhorizontal
row of granules; upper margin of dactylus bearing numerous long hairs ..
;....;...;............ P. floridana
Outer surface of chela with few, if any, grariuies; few short hairs (mainly on
immovable finger and upper margin of dactylus) 9
9. (8) Third walking leg with posterior surface of merus not deeply excavate behind
smoothly beaded posterior margin P. cylindrica
Third walking leg with posterior surface of merus deeply excavate behind nearly
entire length of laminate arid strongly beaded* of tuberculate posterior margin
* P. lunzi
10. (4) Third walking leg with greatest length of propodus twice or more than twice its
greatest width .......................^... k 11
Third walking leg with greatest length of pfbpodus less than twice its greatest width.
..............,.;..;.. 12
11. (10) Third walking leg with inferoposteriof margin of merus coarsely granulated or
toothed (may be concealed by hair) juvenile;.....^.....;.. P. chaetopterana
Third walking leg with inferoposterior margin of merus finely toothed or granular...
.. ... i P. sayana
12. (10) Single bilobed cardiac ridge present. P. pearsei
Two short ridges on cardiac region 1 P. chaetopterana