Anacroneuria debilis (Pictet, 1841)

(Figs. 2A–B)

Perla (Perla) debilis Pictet, 1841: 255, Anacroneuria debilis Zwick, 1972: 1155, Zwick, 1973: 486, Froehlich, 2002: 76, Silva et al. 2011: 59 –63, Baldin et al., 2013: 392, Bispo et al., 2014, Novaes & Bispo, 2014a: 434, Novaes & Bispo, 2014b: 459, Duarte & Lecci, 2016: 293.

Material examined. BR, BA: EEEWG, Riacho Serra Grande, S13°35'34'', W39°42'52'', 09.x.2010, light pan trap, AC et al. col., 1 male; Riacho Serra Grande, Headquarters, S13°35'43,5'', W39°43'11,9'', 10.x.2010, light pan trap, AC et al. col., 1 male; Riacho Serra Grande, Waterfall, S13°35'38'', W39°42'50'', 10.x.2010, light pan trap, AC et al. col., 1 male; Riacho Serra Grande, S13°35'60'', W39°42'08'', v.2011, light pan trap, AC et al. col., 2 males; Riacho Serra Grande, Headquarters, S13°35'43,5'', W39°43'11,9'', 06.ix.2013, light trap, AC, TD & ED, 1 male; Riacho Patioba, S13°34'44'', W39°42'09'', 07.ix.2013, light pan trap, AC, TD & ED, 2 males.

Morphometric data. Male (n= 8), forewing length, 10,5–11,5 mm (mean standard deviation (s)= 0,46).

Remarks. This species is widely distributed from northeast Argentina (MIS and ER) and Paraguay to northeastern Brazil (Duarte & Lecci, 2016). The penial armature of the specimens studied differ slightly from the holotype illustration (Zwick, 1972) and the figures of Novaes & Bispo (2014a) and Bispo et al. (2014). However, it agrees with the redescription of Baldin et al. (2013). This suggests a need to study A. debilis in a phylogeographical perspective. A teneral specimen is pale brownish in general color, a square pronotum (trapezoidal in non-teneral specimens) (Figs. 2 A-B), remnants of gills present on thoracic segments, and milky wings.

Species Authors, data Known life stages Distribution Male Female Nymph

*In Righi-Cavallaro et al., 2013; **New record