The pea crab genus Arcotheres Manning, 1993 (Crustacea: Brachyura: Pinnotheridae) from Singapore and Peninsular Malaysia, with a reappraisal of diagnostic characters and descriptions of two new genera
Author
Ng, Peter K. L.
Author
Ahyong, Shane T.
text
Raffles Bulletin of Zoology
2022
2022-04-01
70
134
248
journal article
10.26107/RBZ-2022-0009
2345-7600
7174234
BE6164AE-1C24-4E01-8B7B-D80764F147B3
Magnotheres
,
new genus
Type
species.
Pinnotheres globosum
Hombron & Jacquinot, 1846
, by present designation.
Diagnosis.
Carapace dorsal surface smooth, without obvious gastric grooves. MXP3 dactylus slender, inserted near or slightly proximal to ventral midlength of propodus, variable length; propodus spatuliform, about 3.0 times longer than wide; inner margin of widest part of ischiomerus rounded to angular; exopod relatively slender with proximal part of exopod not especially wide.
Female P
4 slightly asymmetrical, with merus on left or right side slightly longer; dactyli of P2 and P3 subequal, weakly curved, longer than half propodus length, P4 dactylus similar in shape but slightly longer than P2 and P3 dactyli; P5 dactylus elongate, weakly falciform, with 2 rows of distoflexor spinules.
Male
pleon relatively