Epipleoneura williamsoni Santos, 1957

Pessacq, Pablo, 2014, Synopsis of Epipleoneura (Zygoptera, Coenagrionidae, “ Protoneuridae ”), with emphasis on its Brazilian species, Zootaxa 3872 (3), pp. 201-234 : 232

Epipleoneura williamsoni Santos, 1957

( Figs. 24 , 46 , 63 )

Epipleoneura williamsoni Santos 1957: 1 –5, figs. 1–11 (new species, description of male and female, illustration of male S 10 in lateral, ventral and dorsal view, female S 10 in lateral and dorsal view, genital ligula in lateral and ectal view, male and female prothorax in dorsal and lateral view, type material at MNRJ). Rácenis 1960: 25 –26 (included in list of species, recorded for Brazil). Lencioni 2005: 186, figs. 116 a–j (references, type locality, distribution, described stages, reproduction of illustrations of male S 10 in lateral, dorsal and posterior view, prothorax in lateral and dorsal view, genital ligula in ectal and lateral view and female prothorax in lateral and dorsal view, S8– 1 in lateral view and S 10 in dorsal view). Garrison et al. 2010: 352, 354, fig. 2339 (included in list of species, illustrations of epiproct in posterior view). Pessacq 2010: 56 , 57, 59–61, figs. 1d–e, 2c–d, 3c–d, 4 (comparison with Epipleoneura angeloi , illustration of cercus in dorsal and lateral view, genital ligula in ectal and lateral view, female pronotum in dorsal and lateral view, distribution map). Pessacq et al. 2012: 5 (included in list of Brazilian Protoneuridae , new record for Tocantins State).

Specimens examined. 13 ♂, 1 ♀. Holotype ♂, Brazil, São Paulo State, Pirassununga, São Vicente River County, border with Passa Quatro County (about 21°59'45"S 47°25'37"W), leg. N.D. Santos & J.P. Machado, 15 xii 1948. 5 paratype ♂ and allotype ♀, same data as holotype. 1 ♂, Tocantins State, Araguatins (about 5°39′3″S, 48°7′26″W), leg. J. Hidasi, ix–xi 1963. 6 ♂ 1 ♀, Mato Grosso State, Diamantino, Paraguay River headwaters, Sete Lagoas Ranch (about 14°24'10'S 56°25'37"W), leg. J.M. Costa & L.O.I. Souza, 10 iii 2002.

Diagnosis. See under E. angeloi and E. manauensis . Epipleoneura williamsoni can be recognized by the following unique combination of characters: Male cercus with a dorsal and a ventral branch separated by a wide excavation, dorsal branch flattened, ventral branch rounded in lateral view, wide, slightly longer than half the length of dorsal branch; apex of paraproct surpassing level of apex of ventral branch ( Figs. 24 a–c). The posterior margin of female pronotum ( Fig. 63 ) is unique within the genus, it has an erect triangular lobe on each side; middle section between lobes flat and low.

Distribution. Central and central-southern Brazil in São Paulo, Tocantins, Mato Grosso, and Bahia States (São Paulo, Pirassununga, São Vicente River County, border with Passa Quatro County, about 21°59'45"S 47°25'37"W). Central Paraguay.

Figures

FIGURES 22 – 24. Male caudal appendages, a: lateral view; b: posterior view, c: latero-posterior view. SS: subapical spine.

FIGURES 28 – 47. Genital ligula, lateral and ectal view. Figures 29, 33, 47 modified from Garrison et al. (2010). PLP: posterolateral projection.

FIGURES 53 – 66. Female pronotum in lateral, dorsal, antero-lateral, anterior postero-lateral and posterior view. Figures 57, 64 and 65 modified from Garrison et al. (2010), Rácenis (1960) and Machado (2005) respectively.