Scapholeberis

Quiroz-Vázquez, Patricia & Elías-Gutiérrez, Manuel, 2009, A New Species of the Freshwater Cladoceran Genus Scapholeberis Schoedler, 1858 (Cladocera: Anomopoda) from the Semidesert Northern Mexico, Highlighted by DNA Barcoding, Zootaxa 2236, pp. 50-64 : 62

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