TN00347 ROUGH RABBIT'S FOOT FRESHWATER MUSSEL QUADRULA CYLINDRICA STRIGILLATA STRIGILLATA
Behavior: Dispersal is during the larval stage only by movement of the host species *2100*. Origin: The origin of this species is native. TN00347PHYSICAL DESCRIPTION: SHELL IS ELONGATE, BEING RHOMBOID OR RECTANGULAR IN OUTLINE, VALVES ARE INFLATED, THICK AND SOLID, RANGING FROM COMPRESSED TO INFLATED, BECOMING ALMOST CYLINDRICAL IN CROSS SECTION, THE FORM Q. C. STRIGILLATA IS MUCH MORE COMPRESSED THAN TYPICAL Q. C. CYLINDRICA, BEAKS ARE MODERATELY ELEVATED, SCULPTURE CONSISTS OF A FEW IRREGULAR STRONG RIDGES OR COARSE FOLDS, ENDING OR CONTINUING ON THE UMBONAL AREA AS SMALL TUBERCLES, POSTERIOR RIDGE IS FULL AND ROUNDED, EXTENDING DIAGONALLY FROM THE UMBO TO THE POSTERIOR VENTRAL MARGIN WHILE ABOVE THERE IS A WIDE RADIAL IMPRESSION THAT MAY END IN A SLIGHT SINUS BEHIND, IN STRIGILLATA THE POSTERIOR RIDGE IS LOWER AND LESS DISTINCT, ANTERIOR END OF THE SHELL IS ROUNDED AND THE POSTERIOR END IS USUALLY SQUARED OR OBLIQUELY TRUNCATED, SURFACE OF THE SHELL IS MARKED BY RAISED ANNUAL GROWTH LINES, AND POSSESSING A ROW OF KNOBS EXTENDING DOWN THE POSTERIOR RIDGE WHILE THE REST OF THE SHELL SURFACE IS MORE OR LESS COVERED WITH TEAR-SHAPED NODULES AND PLICATIONS, Q. C. STRIGILLATA IS DEVOID OF LARGE TUBERCLES BUT THICKLY COVERED WITH SMALL ONES, DORSAL AREA BEHIND THE UMBO IS COMPRESSED, COVERED WITH SEVERAL TO MANY BROADLY ROUNDED RIDGES CURVING UP TOWARD THE DORSAL MARGIN, EPIDERMIS IS STRAW-COLORED, LIGHT YELLOWISH OR GREENISH BECOMING DARKER AND YELLOWISH-BROWN IN OLD SHELLS, NUMEROUS DARK GREEN STREAKS, CHEVRONS, OR TRIANGULAR SPOTS, WITH THE POINT DIRECTED VENTRALLY, APPEAR OVER MOST OF THE SURFACE, LEFT VALVE HAS TWO LOW TRIANGULAR, RADIALLY SPLIT PSEUDOCARDINAL TEETH AND TWO LONG STRAIGHT LATERAL TEETH, RIGHT VALVE HAS A SINGLE LOW TRIANGULAR, DEEPLY STRIATED PSEUDOCARDINAL TOOTH, OFTEN WITH A SMALLER ELONGATED TUBERCULAR TOOTH ON EITHER SIDE, THE SINGLE LATERAL TOOTH IS LONG AND STRAIGHT, INTERDENTUM IS EITHER NARROW OR ABSENT AND THE BEAK CAVITY IS MODERATELY DEEP, NACRE IS WHITE AND IRIDESCENT, SHELL IS MUCH THINNER POSTERIORLY, WRIGHT (1898:6) NOTED THE NACRE IN STRIGILLATA IS OFTEN PINK *TN5587* REPRODUCTION: GENUS IS TACHYTICTIC, SO THE BREEDING SEASON OF THIS SPECIES IS INFERRED AS BEING MAY TO JULY *TN5587*
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References for Life History Codes
3895, 2100
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