Anacroneuria itatiaiensis, Baldin, Carolina, Bispo, Pitágoras Da Conceição & Novaes, Marcos Carneiro, 2013

Baldin, Carolina, Bispo, Pitágoras Da Conceição & Novaes, Marcos Carneiro, 2013, New species and records of Anacroneuria (Plecoptera: Perlidae) from Rio de Janeiro State, Brazil, Zootaxa 3694 (4), pp. 391-397 : 394-396

Anacroneuria itatiaiensis sp. n.

Figs. 6–10

Material. Holotype male, Brazil, RJ, PNI, Rio Campo Belo; 23.xi.2001, RWH, RJB, HP.

Description. General color brown; front brown with M-line and side of the ocelli ochraceous ( Fig. 6 ); postfrontal line U-shaped; compound eyes and ocelli black; antennae brown; labial palpi ochraceous; maxillary palpi brownish. Pronotum brown with median band and rugosities lighter ( Fig. 6 ). Legs brownish with lighter femur. Membrane and veins of the wings light brown. Abdomen yellowish. Cerci light brown. Male. Forewing length 10 mm. Hammer conical ( Fig. 7 ). Penial armature elongated, with a pair of relatively small distal membranous vesicles and with a strong subapical constriction in lateral view ( Figs. 8–10 ); hooks long, regularly curved and with pointed apex ( Fig. 10 ); prominent keel in lateral view ( Fig. 9 ); apex of armature slightly curved dorsally ( Fig. 9 ).

Female. Unknown

Remarks. Anacroneuria itatiaiensis and A. fuscicosta (Enderlein 1909) are similar in color and wing length, but are distinguished by the differences in details of the penial armature and in size of hammer (shorter in A. itatiaiensis ). In dorsal view, the apex of penial armature is pointed in A. itatiaiensis and rounded in A. fuscicosta . In lateral view, the penial armature of A. itatiaiensis has a strong subapical constriction, which is less pronounced in A. fuscicosta .

Etymology. The specific epithet is formed from Itatiaia, name of the Park where the specimen was collected.

Figures

FIGURES 6 – 10. Anacroneuria itatiaiensis, sp. n.: Male. (6) head and pronotum; (7) sternum 9; (8 – 9) penial armature (8 dorsal view, 9 lateral view, 10 ventral view). Scales: figures (6, 7) 1.0 mm; figures (8, 9, 10) 0.5 mm.