GIRARDIELLA

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AUSTROCAMBARUS
CAPILLICAMBARUS
GIRARDIELLA
HAGENIDES
LECONTICAMBARUS
ORTMANNICUS
PARACAMBARUS
PENNIDES
SCAPULICAMBARUS
VILLALOBOSUS
 

KEY TO THE SPECIES OF THE SUBGENUS GIRARDIELLA


1.   Mesial surface of palm of chela bearded (Fig. 38a);  areola with 3 or 4 punctations across
      narrowest part (Fig. 38d; see also Fig. 39e):....................................................................................
     ...........................................................................................  Procambarus (G.) tulanei  Penn, 1953.

      (Lentic and lotic habitats and burrows between the Red and Ouachita river systems in
        Louisiana and Arkansas.  Literature:  Penn, 1956b, 1959).

  • Mesial surface of palm of chela never bearded (Fig. 38b, c); areola linear or with only
    1 or 2 punctations across narrowest part (Fig.  38e):........................................................................    2
Fig. 38.  a-c, Dorsal view of chelae;  d,e, Dorsal view of carapaces.  a, Procambarus tulanei;  b, P. s. simulans;  c, P. gracilis;  d, P. tulanei;  e, P. gracilis.

2(1).   Areola with room for more than 1 punctation across narrowest part;  chela with length of
            inner margin of palm subequal to or greater than width of palm (Fig. 38b):...................................    3

  • Areola linear, never with room for more than 1 punctation across narrowest part (Fig. 38e);
    chela with length of inner margin of palm less that width of palm (Fig. 38c):..................................    4
Fig. 39.  Lateral view of left first pleopods.  a, Procambarus s. simulans;  b, P. s. regiomontanus;  c. P. gracilis;  d, P. hagenianus;  e, P. tulanei.  (cp, cephalic process;  e, central projection).

3(2).  Central projection (e) and cephalic process (cp) of first pleopod tilted cephalodistally;
          caudal margin of main body of appendage evenly contoured (Fig. 39a; see also Fig. 38b):.........
          ................................................................  Procambarus (G.) simulans simulans  (Faxon, 1884).  

           (Lentic and lotic habitats from New Mexiaco to Colorado, Kansas, Arkansas, and
            Louisiana.  A species complex that has been investigated by Rollin D. Reimer.
            Publication of his revision of the species is anticipated in the near future.
            Literature:  Williams, 1954a).

           EDITOR'S NOTE:  The R.D. Reimer reference referred to above is:
             Reimer, R.D., 1975.   Procambarus (Girardiella) curdi, a new crawfish from Arkansas,
            Oklahoma, and Texas (Decapoda: Astacidae). Tulane Studies in Zoology and
            Botany
, 19(1,2): 22-25, figures 1-9. 

  • Central projection and cephalic process of first pleopod directed distally (Fig. 39b);
    caudal margin of main body of appendage sometimes with angular notch near base
    of distal 1/3:.........................  Procambarus (G.) simulans regiomontanus  Villalobos, 1954.  

          (Known only from the type-locality, 5 km. north of Monterrey, Nuevo León, México.
            Literature:  Villalobos, 1955).

Fig. 40.  Dorsal view of terminal portion of abdomens.  a, Procambarus gracilis;  b, P. hagenianus.  (Arrow indicating median spine on inner ramus of uropod).

4(2).  Cephalic process (cp) of first pleopod well developed (Fig. 39c); inner ramus of uropod
       with median spine not projecting distally beyond margin of ramus (Fig. 40a; see also
          Fig. 38c, e):...............................................................  Procambarus (G.) gracilis (Bundy, 1876).  

          (Burrows in Texas, Oklahoma, Kansas, Arkansas, Missouri, Iowa, Illinois, and
           Wisconsin.  A species complex that has been investigated by Rollin D. Reimer.
           Publication of his revision of the species is anticipated in the near future.
           Literature:  Williams, 1954a).

          EDITOR'S NOTE:  The R.D. Reimer reference referred to above is:
            Reimer, R.D., 1975.   Procambarus (Girardiella) curdi, a new crawfish from Arkansas,
            Oklahoma, and Texas (Decapoda: Astacidae). Tulane Studies in Zoology and
            Botany
, 19(1,2): 22-25, figures 1-9. 

  • Cephalic process of first pleopod absent (Fig. 39d); inner ramus of uropod with median
    spine projecting distally much beyond margin of ramus (Fig. 40b;  see also Fig. 21a):.............
    ..........................................................................  Procambarus (G.) hagerianus  (Faxon, 1884).

           (Burrows in central and eastern Mississippi and western Alabama.  A species complex
             that is being revised by Joseph F. Fitzpatrick.  Literature:  Faxon, 1885, 1914).


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END OF GIRARDIELLA

Last Updated:  10 September 2004