A New Species of the Freshwater Cladoceran Genus Scapholeberis Schoedler, 1858 (Cladocera: Anomopoda) from the Semidesert Northern Mexico, Highlighted by DNA Barcoding Author Quiroz-Vázquez, Patricia Author Elías-Gutiérrez, Manuel text Zootaxa 2009 2236 50 64 journal article 10.5281/zenodo.190439 03616bb7-53de-42e1-ae7a-87557c1717c3 1175-5326 190439 Key to species of Scapholeberis recorded in Mexico 1a. Mucro 1/5–1/9 (average 1/7) of valve rim, denticulate membrane at the posterior rim of the valves conspicuous and without a underlying hyaline membrane ............................................................................................. S. armata armata 1b. Mucro equal or larger than above, denticulate membrane at the posterior rim of the valves with or without an underlying hyaline membrane................................................................................................................................................ 2 2a. Denticulate membrane at the posterior rim of the valves markedly thick and with a conspicuous underlying hyaline membrane. Mucro 1/4–1/6 (average 1/5) of valve rim ............................................................... S. duranguensis n. sp. 2b. Denticulate membrane at the posterior rim of the valves inconspicuous and with an equally inconspicuous (if present) underlying hyaline membrane. Mucro 1/6–1/9 (average 1/7) of valve rim .................................... S. armata freyi