Download PDF as one large file - AToL Decapoda

Family Xanthidae 605
18. (13) Frontal and anterolateral regions rough with numerous tubercles, spinules, or
sharp granules; walking legs spinulous above 19
Frontal and anterolateral regions relatively smooth, never spinulous or sharply
granulous 20
19. (18) Anterolateral regions coarsely tuberculate (basal antennal segment broad,
prolonged into orbital hiatus; front prominent, four-toothed; fingers spooned).....
Etisus maculatus
Anterolateral regions, chelipeds and walking legs spinulous or sharply granulous;
size small; anterolateral margin shorter than posterolateral, with either second or
fifth tooth or both reduced or wanting; basal antennal segment not reaching or
barely reaching prolongation from front Micropanope
20. (18) Only four anterolateral teeth including orbital angle; carapace very convex from
front to back; front truncate; chelae elongate Tetraxanthus
Five anterolateral teeth 21
21. (20) Anterolateral teeth small, thick, widely separated; few smooth transverse ridges
on anterolateral and epigastric regions; legs thickly hairy •
Chlorodiella longimana
Anterolateral teeth broad, flat, first and second more or less fused 22
22. (21) Third segment of male abdomen not reaching coxae of legs of last pair; carapace
subquadrate, broad behind, front truncate Rhithropanopeus harrisii
Third segment of male abdomen reaching coxae of legs of last pair; carapace
narrower behind 23
23. (22) Carapace crossed by broken, transverse, raised, granulated lines on anterior half;
front nearly transverse, not advanced; first and second anterolateral teeth partially
fused Panopeus
Carapace narrow, not crossed by transverse raised lines 24
24. (23) Front arcuate, forming regular curve with anterolateral margins; second
anterolateral tooth lobiform, separated from the first by shallow sinus; male
abdomen constricted between fifth and sixth segments; terminal segment
subtriangular Neopanope
Hexagonal; front narrow, prominent beyond curve of anterolateral margins;
posterolateral margins strongly converging; anterolateral teeth prominent;
supraorbital lobe well marked Hexapanopeus
25. (1) Fronto-orbital border half or less than half greatest width of carapace 26
Fronto-orbital border much more than half greatest width of carapace 28