Anacroneuria otafroehlichi Righi-Cavallaro & Lecci, 2010, sp. n.
Creators: name: Righi-Cavallaro, Karina O.
name: Lecci, Lucas S.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Anacroneuria
Anacroneuria otafroehlichi

description: Anacroneuria otafroehlichi sp. n.   
(Figs. 1–6)  
 Type material. Holotype, male + exuvium: BR, MS, Chapadão do Sul, Fazenda Pedra Branca, Rio Sucuriú (19.24255S 52.83305W), 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. 1). Scape and pedicel light brown, rest of antenna brown. Palpi yellowish. Pronotum trapezoidal (Fig. 1), 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. 2). Penial armature (Figs. 3, 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. 5). 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. 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.
description: Published as part of Righi-Cavallaro, Karina O. & Lecci, Lucas S., 2010, Three new species of Anacroneuria (Plecoptera: Perlidae) from Centre-West and Southeast Brazil, pp. 35-44 in Zootaxa 2683 on page 37, DOI: 10.5281/zenodo.199362