Anacroneuria melzeri (Navás) Navas, 2007

Froehlich, Claudio G., 2007, Three new species of Anacroneuria (Plecoptera: Perlidae) from the State of Mato Grosso do Sul, Brazil, Zootaxa 1461, pp. 15-24 : 16

Anacroneuria melzeri (Navás) comb. nov. ( Figs. 2–3 )

Neoperla melzeri Navás 1932 . Rev. R. Acad. Cien. 29: 59.

Material Examined. Holotype, f#, with the labels: Matto Grosso S. Martinho XI. 29 W. Melzer/Melzer ded/ Holotypus / Neoperla melzeri Nav. P. Navás S.J. det./ Typus / Jun 68 Froehlich/ Dtsch. Ent. Inst. Berlin/Dtsch. Ent. Inst. Eberswalde/ N. melzeri Nav.

Redescription. Frons mostly brown, a lighter area in the middle and at sides of ocelli; parietalia also lighter ( Fig. 2 ). Scape of antennae (remaining segments missing) and palpi brown. Pronotum uniformly brown. Legs brown, femora more yellowish basally. Wing membrane lightly infuscated, veins brown, C and Sc distally lighter. Forewing length, 11.4 mm. Subgenital plate 4-lobed, mesal lobes low, broader than the lateral lobes; median notch deeper than lateral ones ( Fig. 3 ). Sternum 9 with a T-shaped field of hairs.

Remarks. Navás (1932) describes the pronotum as having a slightly lighter middorsal stripe, no longer visible in the holotype. The species can apparently be recognized by the mostly brown frons with a central light spot and the brown pronotum, in combination with the shape of the female subgenital plate ( Fig. 3 ).

Figures

FIGURES 2 – 3. Anacroneuria melzeri (Navás), f # holotype: (2) head and pronotum, scale bar = 1 mm; (2 – 3) sterna 8 – 9, scale bar = 0.5 mm.