Anacroneuria otafroehlichi, 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: 37

publication ID 10.5281/zenodo.199362


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scientific name

Anacroneuria otafroehlichi

sp. n.

Anacroneuria otafroehlichi  sp. n.

( Figs. 1–6View FIGURES 1 – 4View FIGURES 5 – 6)

Type material. Holotype, male + exuvium: BR, MS, Chapadão do Sul, Fazenda Pedra Branca, Rio Sucuriú (19.24255 S 52.83305 W), 27.VIII. 2008, KORC, MRC, TTMT, RCP. Paratypes: Nymph, 1, same data as holotype, riffle; Adults, 22 m, same data as holotype, 2 m same locality but 09.VI. 2008, KORC, MRC, OF, NP.

Description. General colour light yellowish-brown. Area anterior to ocelli forming light yellow patch, rest of head paler ( Fig. 1View FIGURES 1 – 4). Scape and pedicel light brown, rest of antenna brown. Palpi yellowish. Pronotum trapezoidal ( Fig. 1View FIGURES 1 – 4), yellowish with lateral light brown areas, rugosities darker. Legs yellowish, femora with dark brown band at apex, tibiae and tarsi light brown. Wing hyaline yellowish-brown, veins light brown, Sc and R darker. Abdomen yellowish. Cerci brownish.

Male. Forewing length, 12.2–13.2 mm, n= 14. Hammer a simple truncate cone ( Fig. 2View FIGURES 1 – 4). Penial armature ( Figs. 3, 4View FIGURES 1 – 4) simple, narrowing gradually from base to a blunt apex, apical portion hooks smoothly curved with pointed tips. In a side view, dorsal keel low, a pair of small ventral vesicles present.

Female. Unknown.

Nymph. Pre-emergent body length 12.4 mm. Posterior part of frons yellowish; brown patch in anterior part of the frons extending to ocelli in a smooth, wide arc; an anterior pale band in the clypeal area ( Fig. 5View FIGURES 5 – 6). Pronotum brown, similar in coloration to head markings; several small, scattered, circular pale spots and larger, linear pale areas near midline. Femur with dorsal fringe; thick bristles and dark clothing hairs scattered over femur surface except in small hairless oval dorsomedially. Tibia covered by thick bristles, these smaller anteriorly and larger posteriorly; posterior surface with silky fringe of hairs ( Fig. 6View FIGURES 5 – 6). Tarsal segments dorsally with band of long bristles. Abdomen terga pale anteriorly, darker posteriorly; all terga covered with short bristles. Cerci armed with sparse apical whorls of short bristles.

Remarks. The penial armature of A. otafroehlichi  bears some resemblance to a small group of species including A. polita ( Burmeister, 1839)  , A. fuscicosta ( Enderlein, 1909)  , A. oculatila Jewett, 1959  , A. novateutonia Jewett, 1959  and A. ofaye Froehlich, 2007  . Anacroneuria otafroehlichi  differs from A. polita  by its lighter colour and, additionally, by the more rounded apex of the penial armature. Moreover, A. polita  is smaller than A. otafroehlichi  , with forewing length 7.5–10.1 mm ( Zwick 1972, Froehlich 2004). It differs from A. fuscicosta  which has a ventrally sloping apex by having a blunt apex. It differs from A. oculatila  and A. novateutonia  which have the penial armature tapering to a truncate apex with subapical shoulders; this is absent in A. otafroehlichi  . In A. ofaye  , the dorsal keel is more elevated and, in dorsal view, resembles a square racket.

Etymology. The specific epithet, otafroehlichi  , honors Otavio Froehlich, Universidade Federal de Mato Grosso do Sul, noted ichthyologist, for his contagious enthusiasm, great discussions and overall friendship.


TUBITAK Marmara Research Center Culture Collection