Anacroneuria singularis, Righi-Cavallaro, Karina O. & Lecci, Lucas S., 2010

Righi-Cavallaro, Karina O. & Lecci, Lucas S., 2010, Three new species of Anacroneuria (Plecoptera: Perlidae) from Centre-West and Southeast Brazil, Zootaxa 2683, pp. 35-44: 43-44

publication ID 10.5281/zenodo.199362


persistent identifier

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scientific name

Anacroneuria singularis

sp. n.

Anacroneuria singularis  sp. n.

( Figs. 13–18View FIGURES 13 – 16View FIGURES 17 – 18)

Material examined. Holotype, male: BR, MS, Chapadão do Sul, Fazenda Stella I, Rio Indaiá Grande (19.53055 S 52.49166 W), 16.XII. 2008, KORC, MRC, LP, RCP. Paratypes: BR, SP, Pedregulho, Córrego do Pedregulho (20.21666 S 47.43333 W), 2 m, 26 f, 18.II – 21.III. 1989, CGF, LGO, MJNF; 1 m, 8 f, 18.V. 1989, LGO, MJNF; 5 f, 15.VI. 1989, CGF, LGO, MJNF; 2 m, 1 f, 13.VII. 1989, CGF, LGO, MJNF; 2 m, 2 f, 17.VIII. 1989, CGF, LGO, MJNF; 8 m, 1 f, 18.IX. 1989, CGF, LGO, MJNF; 6 m, 7.XI. 1989, CGF, LGO, MJNF; 2 m, 7 f, 06.X. 2000, CGF, LGO, MJNF. Rio Indaiá Grande (19.53055 S 52.49166 W), 1 m, same data as holotype, 8 m, 17.XII. 2008, KORC, MRC, LP, RCP.

Description. General colour light brown. Genae yellowish. Ocelli and frons encompassed by a quadrate area of light yellow ( Fig. 13View FIGURES 13 – 16). Clypeal area and labrum yellowish. Scape and pedicel of antennae light brown, rest of antennae brown. Palpi light brown. Pronotum trapezoidal, light brown with light yellow median stripe, rugosities lighter. Legs light brown, tibiae and tarsi darker. Wing light brown hyaline and veins brown, C, Sc and R veins darker. Abdomen yellowish. Cerci brownish.

Male. Forewing length, 9.7–10.9 mm, n= 15. Hammer ( Fig. 14View FIGURES 13 – 16) a simple truncate cone. Penial armature ( Figs. 15, 16View FIGURES 13 – 16), in dorsal view, narrows abruptly in a distal quarter to a rounded apex; hooks distinctly curved around apical part of the penial armature. In lateral view, distal portion of the hooks slightly curved dorsally and with rugosities, surface of distal half irregular, apices pointed. Distal ventral vesicles absent.

Female. Forewing length, 12.1–16.7 mm, n= 15. Subgenital plate four-lobed ( Fig. 17View FIGURES 17 – 18), median lobes separated by a slightly deep rounded notch; lateral notches shallow. Posterior margin of St 9 sinuous to almost straight, slightly sclerotized, lateral longer hairs moderately dense; some long hairs at margin. Egg oval, blackish, 0.34 x 0.19 mm ( Fig. 18View FIGURES 17 – 18).

Remarks. This species differs from its congeners in having penial hooks that curve much further dorsally. Etymology. Singularis  , Latin, meaning unique. The name is in reference to the unique penial armature of the species.


TUBITAK Marmara Research Center Culture Collection