Download PDF as one large file - AToL Decapoda

Family Paguridae 363
3. (2) Left chela with longitudinal row of moderately strong or strong spines in proximity
to dorsolateral margin; antennal flagella with setae less than 1 article in length
P. brevidactylus
Left chela without longitudinal row of moderately strong or strong spines in
proximity to dorsolateral margin; antennal flagella with setae 1-2 articles in length ....
P. carolinensis
4. (1) Width of major chela at least length (except P. maclaughlinae) 5
Width of major chela less than length (except P. maclaughlinae) 7
5. (4) Dactylus of major chela with sharply produced angle on mesial margin
...P. pollicaris
Dactylus of major chela without sharply produced angle on mesial margin 6
6. (5) Chelipeds with palms dented on dorsal surfaces, covered with small, closely
crowded granules P. impressus
Palm of major chela bearing irregular rows of spines on dorsal surface; palm of
minor chela bearing single or double rows of spines on dorsal midline
P. maclaughlinae
I. (4) Rostrum distinct, usually produced as small lobe P. marshi
Rostrum not distinct or produced as small lobe 8
8. (7) Antennal flagella with long, usually uniformly paired setae, 3-8 articles in length, at
least every second article proximally 9
Antennal flagella with short, or irregularly short and long, not uniformly paired,
setae over entire length 11
9. (8) Dactyli of pereopods without row of corneous spines on inferior margins (rarely
with 1-3 minute spinules) P. gymnodactylus
Dactyli of pereopods with row of corneous spines on inferior margins 10
10. (9) Antennal flagella short, not overreaching left chela; carpus of 2nd right pereopod
with dorsal row of spines P. annulipes
Antennal flagella long, overreaching right chela; carpus of 2nd right pereopod
without dorsal row of spines, rarely 1 or 2 spines in large individuals (shield length
2.5 mm) P. criniticornis
II. (8) Palm of small (left) chela triangular in cross section, upper surface divided by
longitudinal ridge into 2 obliquely sloping facets .12
Palm of small (left) chela not triangular in cross section, either oval or flattened... 13