Prebaetodes meredinensis Chacón, Pescador & Segnini, 2010

Pérez-García, Belkys Yubiry & Nieto-Caicedo, Liliana, 2023, New record and updated checklist of Baetidae (Insecta: Ephemeroptera) from Venezuela, Revista Chilena de Entomología (Rev. Chil. Entomol.) 49 (1), pp. 109-119 : 112

Prebaetodes meredinensis Chacón, Pescador & Segnini, 2010

( Figs. 2C , 5 a-f)

Distribution. Colombia (Salinas et. al. 2019), Venezuela, Mérida ( Chacón et al. 2010) and Yaracuy (new state record).

Material examined. One nymph from: VENEZUELA. Leonor Bernabó Recreative Park, YurubÍ National Park , San Felipe municipality, Yaracuy state, 10°21’43’’ N, 68°45’01’’ W, 400 mals, 12-XII-2014, Belkys Pérez col. Material housed at MZUC (wet invertebrate collection) .

Comments. Chacón et al. (2010) and Salinas et al. (2019) collected specimens of P. meredinensis at 870 to 3056 mals, in Los Andes bioregion. This report expands the altitudinal distribution of the species to lower elevations, 400 mals in Cordillera de la Costa bioregion. The specimen was collected in a step-pool reach, characterized by a predominance of fast water, habits rough, at 21 °C, conductivity 243 µS, pH 8.25, and 13.08 mg /L dissolved oxygen concentrations.

Figures

Figure 5. Prebaetodes meredinensis. a) Labrum. b) Left mandible: detail of incisors and prostheca. c) Maxillae: detail of galea-lacinia. d) Hypopharynx. e) Labium. f) Tarsal claw. Scale barr: 0.1 mm. / Prebaetodes meredinensis. a) Labro. b) MandÍbula izquierda: detalle de los incisivos y prosteca. c) Maxila: detalle de la galea-lacinia. d) Hipofaringe. e) Labio. f) Uña tarsal. Barra de escala: 0,1 mm.

Figure2. Nymphs, dorsal habitus.a) Camelobaetidius edmundsi. b) Camelobaetidius patricki. c) Prebaetodes meredinensis. d) Varipes sancarlos.Scale barr: 1 mm. / Ninfas, vista dorsal. a) Camelobaetidius edmundsi. b) Camelobaetidius patricki. c) Prebaetodes meredinensis. d) Varipes sancarlos. Barra de escala: 1 mm.