Raquel A. Fagundo
Evan Lau
Stuart A. Welsh
Roger F. Thoma
Zachary J. Loughman
2013
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<p><i>Cambarus </i>(<i>Cambarus</i>)<i> hatfieldi</i> is a stream-dwelling crayfish that appears to be endemic to the Tug Fork River system of West Virginia, Virginia, and Kentucky. Within this region, it is prevalent in all major tributaries in the basin as well as the Tug Fork River’s mainstem. The new species is morphologically most similar to <i>Cambarus sciotensis </i>and <i>Cambarus angularis. </i>It can be differentiated from <i>C. sciotensis</i> by its squamous, subtrinagular chelae compared to the elongate triangular chelae of <i>C. sciotensis</i>; its shorter palm length/palm depth ratio (1.9) compared to <i>C. sciotensis </i>(2.3); and a smaller areola length/total carapace length ratio (30.4% vs.36.5% respectively). <i>Cambarus hatfieldi</i>can be differentiated from <i>C. angularis</i> by its smaller areola length/total carapace length ratio (30.4% vs. 36.7% respectively); a smaller rostrum width/rostral length ratio (59.4% vs. 67.2% respectively); its rounded abdominal pleura as compared to the subtruncated pleura of <i>C</i>. <i>angularis</i>; the length of the central projection and mesial process of <i>C</i>. <i>hatfieldi</i> which both extend to the margin of the gonopod shaft or slightly beyond the margin compared to the central projection of <i>C. sciotensis</i> and <i>C. angularis</i>where both extend well beyond the margin of the gonopod shaft.</p>
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application/pdf
10.11646/zootaxa.3750.3.3
en
Magnolia Press
<i>Cambarus (C.) hatfieldi</i>, a new species of crayfish (Decapoda:Cambaridae) from the Tug Fork River Basin of Kentucky, Virginia and West Virginia, USA
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