Galearctus, Holthuis, 2002

Holthuis, Lipke B., 2002, The Indo-Pacific scyllarine lobsters (Crustacea, Decapoda, Scyllaridae), Zoosystema 24 (3), pp. 499-683 : 559

KEY TO THE SPECIES OF GALEARCTUS N. GEN.

Species dealt with in this paper are in bold.

1. Propodus of P.3 smooth, without hairy grooves on outer surface, rather narrow, being only slightly broader than that of P.2 .......................................................... 2

— Propodus of P.3 distinctly wider than that of P.2, with two parallel, often hairy, grooves on the posterior surface ............................................................................ 3

2. Anterior margin of the third antennal segment with two distinct teeth of about equal size .................................................................................. G. aurora n. comb.

— Anterior margin of the third antennal segment with the outer of the two large teeth much larger than the inner .................................................... G. rapanus n. comb.

3. Gastric tooth of carapace very high, its anterior height is distinctly more than half the distance between the anterior base of the gastric and the tip of the rostral teeth. Anterior half of dorsal surface of the abdominal somites with transverse grooves lined with hairs .................................................................................................... 4

— Gastric tooth not conspicuously higher than the other teeth on the midline of the carapace, its anterior height much less than half the distance between its anterior margin and the rostral tooth. Anterior half of the abdominal somites smooth or with an incomplete single hairy groove ........................ G. kitanoviriosus n. comb.

4. Anterior half of abdominal somites II to V smooth, at most with a single, rather indistinct, sometimes interrupted, transverse groove that bears a row of short hairs ................................................................................................ G. timidus n. comb.

— Anterior half of abdominal somites II to V with two distinct crenulated grooves that sometimes are connected with short longitudinal or oblique grooves ...................... .......................................................................................... G. umbilicatus n. comb.