Anacroneuria chavin Stark & Sivec, 1998

Stark, Bill P., Kondratieff, Boris C. & Gill, Brian, 2012, New Species And Records Of Anacroneuria (Plecoptera: Perlidae) From Ecuador And Paraguay, Illiesia 8 (6), pp. 78-93 : 82

Anacroneuria chavin Stark & Sivec

Anacroneuria chavin Stark & Sivec 1998:16 . Holotype ♂ ( CASC). 67 mi E Tingo Maria, Yurac , Peru

Material examined. Ecuador: El Oro, 9 mi S Santa Rosa , 23 January 1955, E.I. Schlinger, E.S. Ross, 11♂ ( CASC) .

Comments. Forewing lengths for these males range from 8-9 mm and the holotype forewing length is 10.5 mm. This difference and subtle differences in the aedeagal apex suggest these specimens may represent a sibling species in this complex. Specifically, the narrow dark markings along the posterior shoulder margins are less distinct for the Ecuadorian specimens and the lateral margins of the aedeagal apex are not constricted at the shoulder as they are in the holotype. A larger sample from the type locality in Peru is needed to more fully evaluate the status of these specimens.