Anacroneuria debilis ( Pictet, 1841 )

Carvalho, Luana Ariel Cardoso De, Almeida, Lucas Henrique De & Bispo, Pitágoras Da Conceição, 2021, Perlidae (Plecoptera) from Bahia State, Brazil: description of the nymphs of Anacroneuria bahiensis Righi-Cavallaro & Lecci, notes on Anacroneuria debilis (Pictet), and updated list of the species, Zootaxa 5023 (3), pp. 433-441 : 435

Anacroneuria debilis ( Pictet, 1841)

( Figs. 3D–E )

Perla (Perla) debilis Pictet 1841: 255 ; Anacroneuria debilis Zwick 1972: 1155 ; Zwick 1973: 486; Froehlich 2002: 76; Avelino- Capistrano et al. 2011: 60; Baldin et al. 2013: 392; Bispo et al. 2014: 592; Novaes & Bispo 2014a: 434; Novaes & Bispo 2014b: 459; Duarte & Lecci 2016: 293; Almeida & Duarte 2017: 481; Almeida & Bispo 2020: 11.

Material examined.Adults: Brazil, Bahia State, Mucugê, PMM, Córrego Boiadeiro (12°59’46,5”S, 41°19’39,9”W), 10.I.2015, Calor col., 1 male; Rio Cumbuca , 19.I.2018, Calor col., 4 females; Nymphs : Brazil, Bahia State, Mucugê, PMM, Córrego do Medonho (13°01’42,7”S, 41°22’03,2”W), 01.VI.2019, Calor col., 2 nymphs .

Remarks. The adults collected had the following sizes: Male (n = 1): forewing length of 11 mm; and Female (n = 4): forewing length of 13–14 mm. Anacroneuria debilis is a species that has shown great morphological variations. Although the male adult studied is in agreement with the holotype ( Zwick 1973) and the variation described by Baldin et al. (2013), it has penial armature with a transverse keel with medial invagination in dorsal view, whereas the holotype and the specimens studied by Baldin et al. (2013) have a simple transverse keel.

Figures

FIGURE 3. Adult head and pronotum. Anacroneuria bahiensis: A. adult male; B. adult female; C. adult teneral male; A. debilis: D. adult male; E. nymph. Scale: 1 mm.