Cambarus cryptodytes Hobbs 1941

Cambarus (J.) cryptodytes

B unidentifiable branchiobdellid: Decatur (Holt, 1973a:248)

E Uncinocythere warreni Hobbs and Walton (1968:250): Decatur (Hobbs and Walton, 1968:251)

Cambarus (Jugicambarus) cryptodytes Hobbs

Cambarus (Cambarus) cryptodytes Hobbs, 1941b:110, 112–114, figs. 2, 3, 7, 11, 13, 15, 18, 21, 24, 28, 29.

Cambarus cryptodytes.—Hobbs, 1942a:354; 1942b:9;, 12, 21, 32, 156–158, 162–163, figs. 196–200; 1952c:689, 693; 1959: 895; 1971a: 122*, fig. 18.—Pennak, 1953:458.—Pylka and Warren, 1958:334.—Hobbs and Hart, 1959:149.—Hobbs and Barr. 1960:13–16, 31, figs. 48–57.—Nicholas, 1960: 132.—Warren, 1961:2*, 6, 7*, 10.—Hobbs and Bedinger, 1964:9*.—Hobbs and Walton, 1968:251*.—Sutton and Relyea, 1971:58.—Holsinger and Peck, 1971:30*. Hobbs and Means, 1972:393.—Caine, 1974b:ii, 3, 7, 12–15, 18, 20, 23, 25, 26, 33–36, 49–41, 43, 44, 47, 50, 55, 57, 62–63, 66, 69, figs. 2c, 4g, 5b; 1975:4280–B.—Hart and Hart, 1974:139*.—Means, 1977:45*, 51, fig. 5*.—Wharton, 1978:176*.

Cambarus (Jugicambarus) cryptodytes.—Hobbs, 1969a: 107, 142*–144, 161*, figs. 9*, 19d; 1972b:122*, 146*, 154*, figs. 10e, 107b; 1974b:18*, fig. 64; 1975b:14*.—Hobbs and Barr, 1972:3*,—Hobbs and Cooper, 1972:49*. 55.—Holt, 1973a:246, 248*.—Hobbs III, 1975:276*.—Hobbs, Hobbs, and Daniel, 1977:11*, 21*, 27, 82, 83*, 151*, fig. 40.

cambarus cryptodytes.—Padgett, 1970:19*.

Crayfish.—Peck, 1974:31* [in part].

The above is believed to be a complete bibliography for the species. References to its occurrence in Georgia are indicated by asterisks.

SUMMARY OF LITERATURE PERTAINING TO GEORGIA.—The first record of the occurrence of this crayfish in Georgia was that of Warren (1961), who cited it from Climax Cave, Decatur County, the only known locality in the state. Prior to Caine's (1974b) study, little was known about this crayfish other than its range (see below), and except for opinions of its affinities, descriptions, and keys to aid in its identification, little other than new locality records are included among the above citations. Caine's study provides valuable comparative data on adaptations of this and six other crayfishes occurring in northern Florida to the rather diverse environments available to them. Among the “adaptive traits” considered are tolerance to temperature, stream velocity, and oxygen tensions, as well as preference of substrate, and differences in metabolism and behavior. A summary of all the known localities is included in Hobbs, Hobbs, and Daniel (1977:83). Means (1977) has included this crayfish among the assemblage of troglobites comprising the “Chattahoochee Fauna,” which occurs in the “Marianna Lowlands-Dougherty Plain physiographic region” of the Florida panhandle and southwestern Georgia.

DIAGNOSIS.—Body without pigment, eyes small and lacking pigment and faceted cornea. Rostrum long and acuminate, margins not thickened and lacking spines or tubercles. Areola 6.0 to 9.8 times as long as wide and comprising 37.3 to 39.3 percent of total length of carapace (46.9 to 48.8 percent of postorbital carapace length), as little as 35.5 and 43.0, respectively, in juveniles under 20 mm carapace length, and bearing 3 or 4 punctations across narrowest part. Cervical spine usually not much larger than flanking tubercles (both branchiostegites and hepatic area with prominent tubercles, often spiniform ones on latter). Suborbital angle weak and obtuse or obsolete. Postorbital ridge terminating in spine or tubercle. Antennal scale slightly less than twice as long as broad, broadest short distance distal to midlength. Chela with 1 or 2 rows of tubercles along mesial margin of palm (8 to 11 in mesialmost row); entire palm tuberculate except for part of dorsolateral surface, lateral margin of palm and proximal half of fixed finger and mesial margin of dactyl subserrate. First pleopod of first form male with very short, broad central projection bearing conspicuous subapical notch and directed at 90-degree angle to main shaft of appendage; mesial process not conspicuously inflated basally, tapering from base and extending much farther caudally than central projection. Female with annulus ventralis only slightly asymmetrical with usually deep, slightly oblique cephalomedian groove, swollen caudal wall, and rather small tongue, latter directed dextrally or sinistrally; sinus, either vaguely S- or C-shaped, terminating on caudal wall at or near median line; first pleopods vestigial, almost tuberculiform.

COLOR

Cambarus (Jugicambarus) cryptodytes Hobbs

Cambarus cryptodytes Hobbs, 1941b:110, figs. 2, 3, 7, 11, 13, 15, 18, 21, 24, 28, 29; 1942b:162, pl. 11: figs. 196–200.— Hobbs and Barr, 1960:31, figs. 48–57.

Cambarus (Jugicambarus) cryptodytes.—Hobbs, 1969b: 107, figs. 9, 19d.

cambarus cryptodytes.—Padgett, 1970:19 [lapsus calami].

TYPES.—Holotype, allotype, and “morphotype,” USNM 79339, 79340, 79343 (I, , II); paratypes, MCZ, USNM.

TYPE-LOCALITY.—R. W. Williams farm, 2 miles south of Graceville, Jackson County, Florida.

RANGE.—Known from several caves in Jackson County, Florida, and Climax Cave, 3 miles north of Climax, Decatur County, Georgia.

HABITAT.—Subterranean waters.

Cambarus (Jugicambarus) cryptodytes Hobbs

Cambarus (Cambarus) cryptodytes Hobbs, 1941b:110, figs. 2, 3, 7, 11, 13, 15, 18, 21, 24, 28, 29; 1942b:162, pl. 11: figs. 196–200; 1974b:18, fig. 64; 1981:197, figs. 24e, 77, 87, 215.—Hobbs and Barr, 1960:31, figs. 48–57.—Hobbs, Hobbs, and Daniel, 1977:83, fig. 40.

Cambarus cryptodytes Hobbs, 1941b:113.—Caine, 1974:12, 43, 62.—Franz and Lee, 1982:56, 69.

Cambarus (Jugicambarus) cryptodytes.—Hobbs, 1969b: 107, figs. 9, 19d; 1981:197, figs. 24e, 77, 87, 215.

Cambarus cryptodytes.—Padgett, 1970:19 [lapsus calami].

Cambarus (Jugicambarus) crytodytes.—Hobbs, 1974b, fig. 64 [erroneous spelling].

TYPES.—Holotype, allotype, and “morphotype,” USNM 79339, 79340, 79343 (male I, female, male II); paratypes, MCZ, USNM.

TYPE LOCALITY.—R.W. Williams farm, 2 miles (3.2 km) south of Graceville, Jackson County, Florida (NW , SW , NE , Sec. 15, T. 6W, R. 13W), 0.2 mi (320 m) W of St. Rte. 77 on St. Rte. 277.

RANGE.—Known from several caves in Jackson and Washington counties, Florida, and Climax Cave, 3 miles (4.8 km) north of Climax, Decatur County, Georgia.

HABITAT.—Subterranean waters.

Cambarus (Jugicambarus) cryptodytes Hobbs

Cambarus (Cambarus) cryptodytes Hobbs, 1941b:110, 112–114, figs. 2, 3, 7, 11, 13, 15, 18, 21, 24, 28, 29.

Cambarus cryptodytes.—Hobbs, 1942a:354; 1942b:9, 12, 21, 32, 156–158, 162–163, figs. 196–200; 1952:689, 693; 1959:895; 1971b:122, fig. 18.—Pennak, 1953:458.—Pylka and Warren, 1958:334.—Hobbs and Hart, 1959:149.—Hobbs and Barr, 1960:13–16, 31, figs. 48–57.—Nicholas, 1960:132.—Warren, 1961:2, 6, 7, 10.—Hobbs and Bedinger, 1964:9.—Hobbs and Walton, 1968:251.—Sutton and Relyea, 1971:58.—Holsinger and Peck, 1971:30.—Hobbs and Means, 1972:393.—D. G. Hart and C. W. Hart, 1974:139.

Cambarus (Jugicambarus) cryptodytes.—Hobbs, 1969b:107, 142–144, 161, figs. 9, 19d; 1972b:122, 146, figs. 10e, 107b; 1974b:18, fig. 64; 1975a:14.—Hobbs and Barr, 1972:3.—Hobbs and Cooper, 1972:49, 55.—Holt, 1973a:246, 248.—Hobbs III, 1975:276.

cambarus cryptodytes.—Padgett, 1970:19.

Crayfish.—Peck, 1974b:31 [in part].

DIAGNOSIS.—Body and eyes without pigment, latter lacking facets. Rostrum tapering gently from base, lacking marginal spines or tubercles. Areola broad, less than 5 times as long as wide. Cervical spine absent or represented by small tubercle. Central projection of first pleopod of first form male short, not tapering, bearing subapical notch, and directed caudally at angle of about 90 degrees; mesial process directed at angle slightly greater than 90 degrees and extending caudally much beyond tip of central projection.

SIZE.—Carapace length 26.4 mm; postorbital carapace length 20.8 mm.

TYPES.—Holotype, allotype, and “morphotype,” USNM 79339, 79340, 79343 ( I, , II); paratypes, MCZ, USNM.

TYPE-LOCALITY.—Well on farm of R. W. Williams, 2 miles (3.2 km) south of Graceville, Jackson County, Florida, U.S.A.

RANGE.—U.S.A. This crayfish is known from several caves in Jackson County, Florida, and from a single cave in Decatur County, Georgia.

The following localities, unless accompanied by references or collectors and/or dates, were taken from Franz and Sutton (in press).

Florida. Jackson County: (1) type-locality; (2) Gerard's Cave [= Sam Smith's Cave], 3.8 mi (6.1 km) NW of Marianna, SW ¼, NE ¼, Sec. 23, T. 5N, R. 11W (Pylka and Warren, 1958:334); (3) Judge Cave, NW ¼, SW ¼, Sec. 35, T. 5N, R. 10W (Warren, 1961:7); (4) Pottery Cave, NW ¼, NW ¼, Sec. 27, T. 5N, R. 10W (Warren, 1961:7); (5) Soda Straw Cave, Sec. 2, T. 4N, R. 10W (Warren, 1961:7); (6) Washed-out Cave, Sec. 23, T. 5N, R. 11W (Warren, 1961:7); (7) Cave approximately 300 yards (273 m) from N end of Waddell's Mill Pond, 11 mi (17.6 km) NNW of Marianna, 31 May 1965, F. J. Moore, C. Potter, and F. Hurt, coll.; (8) Honey-Comb Hill Cave, SE ¼, SE ¼, Sec. 28, T. 5N, R. 10W; (9) Gerome's Cave; (10) Milton's Well Cave; (11) Rockwell Cave; (12) Vetter Cave; (13) Pool Cave.

Georgia. Decatur County: (14) Climax Cave, 3 mi (4.8 km) N of Climax (Warren, 1961:7).

ECOLOGICAL

Cambarus cryptodytes, the Dougherty Plain cave crayfish or Apalachicola cave crayfish, is a small, freshwater crayfish endemic to Florida and Georgia in the United States. It is an underground species known only from waters associated with the Floridan aquifer.