Download PDF as one large file - AToL Decapoda

504 Family Majidae
Genus Pitho Bell, 1835
Key to species
[Adapted from Rathbun, 1925]
1. Second and third lateral teeth, exclusive of tooth at orbital angle, partially united at
base 2
Second and third lateral teeth not united at base... 5
2.(1) First movable segment of antenna much wider than long, its outer lobe strongly
produced laterally; lateral teeth of carapace blunt-tipped in adult P. aculeata
First movable segment of antenna little, if at all, wider than long, its outer lobe
produced as much anteriorly as laterally; lateral teeth of carapace acute 3
3. (2) Lateral teeth subequal in size; carapace subcircular, front narrow P. laevigata
Lateral teeth not subequal 4
4. (3) Last two lateral teeth not much, if at all, smaller than others (second lateral tooth
very small, much smaller than first and third teeth) P. anisodon
Last two lateral teeth much reduced, at least in male (first movable segment of
antennal slightly wider than long; lateral teeth sharper in female than in male, last
two teeth more prominent than in male) P. Iheminieri
5. (1) Lateral teeth five (exceptionally four), dentiform, their edges denticulate
P. mirabilis
Lateral teeth four, long and narrow, spiniform (rostral teeth acutely pointed)........
P. quadridentata