Paramaka incognita Domínguez, Grillet, Nieto, Molineri & Guerrero, 2014

Salles, F. F., Domínguez, E., Mariano, R., Boldrini, R., Clavier, S. & Lima, L. R. C., 2025, A review of Paramaka Savage & Peters, 1992 (Ephemeroptera: Leptophlebiidae) with the description of two new species, Zootaxa 5590 (3), pp. 401-421 : 406-408

Paramaka incognita Domínguez, Grillet, Nieto, Molineri & Guerrero

( Figures 3B–E , 6B )

Paramaka incognita Domínguez, Grillet, Nieto, Molineri & Guerrero, 2014: 308 ; Boldrini & Barroso, 2015: 233; Lima et al., 2023: 6.

Diagnoses. Nymphs: 1) body length of mature nymphs above 10.0 mm; 2) distal margin of clypeus irregular, but not forming a projection; 3) tarsal claw with submarginal denticles present; 4) pointed projection on gills absent; 5) posterolateral projections present on segments VII to IX, often strong and divergent from the body.

Male imago: 1) body length above 10.0 mm; 2) abdominal color pattern contrasting (segments I and VII to X darker, II to VI translucent white); 3) pointed posteromedial projection of styliger plate short and not curved; 4) telopenis base located at apical 2/3 of penis lobe; 5) telopenis well developed and sclerotized, apex expanded and crossing medially.

Female imago: 1) body length above 10.0 mm; 2) oblique lateral dark marks on terga II to V and paired longitudinal stripes on sterna VII and VIII.

Material examined. VENEZUELA, EDO BOLÍVAR, Tarotá stream , 05°49'15"N 61°25'04"W, 1324 m alt, 18.iii.2006. MEG, EG and AMO. cols., HOLOTYPE, male nymph ( IBN). 21 nymphs, same data as holotype; 1 female imago, 3 male and 2 female subimagos, 38 nymphs, except date: 27.vi.2007. 1 nymph, Maraupan stream , 05°12'36"N 61°05'38"W, 1194 m alt, 20.iii.2006. 9 nymphs, Pacheco stream , 05°10'29"N 61°29'51"W, 1144 m alt, 21.iii.2006 ( IBN). BRAZIL, RORAIMA, Pacaraima, Igarapé Samã , 04°28'31"N 61°09'44"W alt, 11.vi.2014, Boldrini, R; Silva, F.R.S. and Faria, R.E.S. cols., 1 male imago (UFRR); same data, except, 06.i.2015, 3 nymphs ( UFRR). BRAZIL, RORAIMA, Pacaraima, Igarapé Miangue , 04°29'09"N, 61°08'03"W, 04.xi.2016, Boldrini, R., Salles, F.F. cols., 1 male imago, 1 female imago with corresponding exuviae, 1 nymph ( UFVB); BRAZIL, RORAIMA, Uiramutã, P. N. Monte Roraima, igarapé do primeiro acampamento , 05°07'25"N 60°35'54"W, 1000 m alt., 08–20.xii.2019, Boldrini, R., Xavier, F.F., Oliveira M.L. col., 2 male imagos ( UFRR).

Distribution. BRAZIL (Roraima) and VENEZUELA.

Comments. Paramaka incognita is the largest species of the genus, with a body length of adults and mature nymphs above 10.0 mm. It is also very conspicuous due to its overall dark coloration on the thorax and abdominal color pattern ( Fig. 6B ). Nymphs are also easily distinguished by the presence and development of the posterolateral projections on the abdomen. While in the other species these projections are present only on segments VIII and IX, being even poorly developed on segment VIII, in P. incognita they are also present on segment VII and are strongly developed on all three segments. The labrum is often very wide, and the labrum/clypeus ratio appears to be distinctive (2.2 in some specimens) ( Fig. 3B ). However, we found some variation among nymphs from the same locality, so this characteristic should be used with caution.

Figures

FIGURE 3. Paramaka spp., nymph and imago: A) head and thorax of the male imago of P. froehlichi (paratype), lateral view; B) head of nymph of P. incognita from Roraima, Brazil; C) head and thorax of the male imago of P. incognita from Roraima, Brazil, dorsal view; D) abdomen of male imago of P. incognita from Roraima, Brazil, lateral view; E) abdomen of female imago of P. incognita from Roraima, Brazil, dorsal view.

FIGURE 6. Paramaka spp., habitus of living male imago: A) P. takari sp. nov. from type-locality; B) P. incognita from Roraima, Brazil.