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FIGURE 2 in Two new species of South American freshwater crayfish genus Parastacus Huxley, 1879 (Crustacea: Decapoda: Parastacidae)

FIGURE 2. Distribution of Parastacus fluviatilis Ribeiro & Buckup sp. nov. and Parastacus caeruleodactylus Ribeiro & Araujo sp. nov in state of Rio Grande do Sul, southern Brazil.

FIGURE 1 in A new species of crayfish in the genus Orconectes (Decapoda: Cambaridae) from the Tennessee River Drainage with comments on and key to members of the O. juvenilis Species Complex

FIGURE 1. Mesial view of a typical form I male gonopod of members of the O. juvenilis Species Complex with long terminal elements (central projection and mesial process) and measurements taken. S = shoulder, CP and yellow arrow = central projection length, MP and white arrow = mesial process length.

FIGURE 5 in Cambarus (Jugicambarus) adustus, a new species of crayfish from northeastern Kentucky delimited from the Cambarus (J.) aff. dubius species complex

FIGURE 5. Bayesian phylogenetic tree depicting relationships among Cambarus (J.) adustus and other closely related species from the subgenus Jugicambarus, along with selected outgroup taxa. This tree was generated in MrBayes by treating all data as a single partition using the HKY+I+G model of sequence evolution. Numbers at nodes indicate both posterior probabilities (regular font) from MrBayes and bootstrap values (in bold), with the latter generated by RAxML using the GTR+G model and 1000 pseudoreplicate datasets. Letters indicate supported clades that are discussed in the main text. Three nodes without bootstrap values indicate nodes that were not found in the ML tree.

FIGURE 4 in Cambarus (Jugicambarus) adustus, a new species of crayfish from northeastern Kentucky delimited from the Cambarus (J.) aff. dubius species complex

FIGURE 4. Cambarus (Jugicambarus) adustus, new species, from the type locality showing natural coloration.

FIGURE 2 in Cambarus (Jugicambarus) adustus, a new species of crayfish from northeastern Kentucky delimited from the Cambarus (J.) aff. dubius species complex

FIGURE 2. Cambarus (Jugicambarus) adustus, new species; all from holotype male, form I (USNM 1407169), except F and G from morphotype male, form II (USNM 1407171), and I from allotype female (USNM 1407170): A, lateral aspect of carapace; B and C, lateral and mesial aspect, respectively, of male I gonopod (first pleopod); D, epistome; E, ventral aspect of right third, fourth, and fifth pereiopods; F and G, lateral and mesial aspect, respectively, of male II gonopod; H, dorsal aspect of antennal scale; I, ventral aspect of annulus ventralis; J, dorsal aspect of carapace; K, dorsal aspect of distal podomeres of right cheliped; CK, caudal knob.

FIGURE 1 in Cambarus (Jugicambarus) adustus, a new species of crayfish from northeastern Kentucky delimited from the Cambarus (J.) aff. dubius species complex

FIGURE 1. Map showing the known distribution of Cambarus (Jugicambarus) adustus in Lewis County, Kentucky. The red star indicates the location of the type locality and red circles indicate localities where the species was found. Numbers at sites indicate the locality as listed in the "Specimens Examined" section. Dark gray circles indicate sites where the species was not found. Gray polygon denotes the species known extent of occurrence. Light yellow areas indicate the three focal drainage basins discussed in the main text. Map generated using Google MyMaps.

FIGURE 5 in Procambarus (Ortmannicus) luxus (Decapoda: Cambaridae), a new crayfish from southern Texas

FIGURE 5. Procambarus (Ortmannicus) luxus new species allotype. (a) ventral and (b) caudal views of annulus ventralis.

FIGURE 4 in Procambarus (Ortmannicus) luxus (Decapoda: Cambaridae), a new crayfish from southern Texas

FIGURE 4. Procambarus (Ortmannicus) luxus new species. (a) Caudal view of first pleopods of holotype; (b) mesial and (c) lateral views of first pleopod of morphotype.

FIGURE 2 in Procambarus (Ortmannicus) luxus (Decapoda: Cambaridae), a new crayfish from southern Texas

FIGURE 2. Procambarus (Ortmannicus) luxus new species (all from holotype except j from paratype). (a) dorsal and (b) lateral views of carapace; (c) dorsal, (d) ventral, (e) lateral and (f) mesial views of chela; (g) merus; (h) proximal podomeres of pereiopods; (i) telson and uropods; and (j) antennal scale.

FIGURE 3 in Procambarus (Ortmannicus) luxus (Decapoda: Cambaridae), a new crayfish from southern Texas

FIGURE 3. Procambarus (Ortmannicus) luxus new species holotype. (a) mesial, (b) caudomesial, (c) caudal, (d) caudolateral, and (e) lateral views of first pleopod; (f) mesial, (g) caudal, and (h) lateral view drawings of first pleopod. All with terminal setae removed.

FIGURE 4 in Fallicambarus (F.) wallsi (Decapoda: Cambaridae), a new burrowing crayfish from eastern Texas

FIGURE 4. Comparison of first pleopods of Fallicambarus (F.) wallsi new species (a–h) and F. (F.) kountzeae (i–p).

FIGURE 5 in Fallicambarus (F.) wallsi (Decapoda: Cambaridae), a new burrowing crayfish from eastern Texas

FIGURE 5. Comparison of first form male chelae of Fallicambarus (F.) wallsi new species (a–d) and F. (F.) kountzeae (e–h).

FIGURE 3 in Fallicambarus (F.) wallsi (Decapoda: Cambaridae), a new burrowing crayfish from eastern Texas

FIGURE 3. Fallicambarus (F.) wallsi new species. (a) caudal, (b) mesial and (c) lateral views of first pleopod of holotype; (d) mesial and (e) lateral views of first pleopod of morphotype; (f) caudodistal view of first pleopods of non-type showing serrate mesial processes (note central projections are less parallel than in (a) because not in situ); (g) ventral and (h) caudal views of annulus ventralis of allotype.

FIGURE 2 in Fallicambarus (F.) wallsi (Decapoda: Cambaridae), a new burrowing crayfish from eastern Texas

FIGURE 2. (a–h) Fallicambarus (F.) wallsi new species holotype: (a) dorsal, (b) ventral, (c) lateral and (d) mesial views of chela; (e) merus; (f) proximal podomeres of pereiopods; (g) epistome and (h) antennal scale. (i) Antennal scale of F. (F.) kountzeae.

FIGURE 35 in Four new crayfishes (Decapoda: Cambaridae) of the genus Orconectes from Texas

FIGURE 35. Orconectes palmeri palmeri annuli ventralis. Obion County, TN, USNM 207342 (a–b); Hickman Co., KY, USNM 177264 (c); Tipton Co., TN, USNM 207381 (d), Hickman Co, KY, USNM 177264 (e–f); Hickman County, KY, USNM 260061 (g).

FIGURE 31. Distal 20 in Four new crayfishes (Decapoda: Cambaridae) of the genus Orconectes from Texas

FIGURE 31. Distal 20 percent of central projection for O. texanus (a–h) and O. palmeri longimanus (i–p).

FIGURE 30 in Four new crayfishes (Decapoda: Cambaridae) of the genus Orconectes from Texas

FIGURE 30. Gonopods of Orconectes texanus for San Jacinto (first row, a–g) and Navasota basins (second row, h–o); and for O. palmeri longimanus (third row, p–w).

FIGURE 27 in Four new crayfishes (Decapoda: Cambaridae) of the genus Orconectes from Texas

FIGURE 27. Orconectes texanus. (a) Mesial, (b) lateral and (c) caudal views of holotypic form I male gonopod; and (d) mesial and (e) lateral views of morphotypic form II male gonopod.

FIGURE 26 in Four new crayfishes (Decapoda: Cambaridae) of the genus Orconectes from Texas

FIGURE 26. Orconectes texanus holotype. (a) dorsal and (b) lateral views of carapace; (c) dorsal, (d) ventral, (e) lateral and (f) mesial views of chela; (g) merus; (h) proximal podomeres of pereiopods; (i) telson and uropods; and (j) antennal scale.

FIGURE 29 in Four new crayfishes (Decapoda: Cambaridae) of the genus Orconectes from Texas

FIGURE 29. Orconectes texanus. Gonopods for Sabine (first row, a–g), Neches (second row, i–p) and Trinity (third row, q–x) basins.