Fredius estevisi ( Rodriguez, 1966 )

Fredius estevisi ( Rodriguez, 1966) View in CoL

( Figs. 1B, C View Figure 1 , 3 View Figure 3 )

Previous records. Magalhães and Pereira (2007: 124, in table 4 - listed under Negro River basin); Magalhães et al. (2014: 104, in table, 105).

Material examined. BRAZIL, Roraima: 3 males (2 immat.) , 5 females (4 juv.), 4 youngs, INPA 2436 View Materials , mun. Pacaraima, headwaters of rio Miang , 04°29’N 061°07’W, 13.vi.2014. F. Zanetti, M.A.L. Santos, Farias, R. E.S., S.C. Emidio and F. R. Silva GoogleMaps ; 5 males, 8 females, INPA 2434 View Materials , mun. Pacaraima, headwaters of rio Miang , 04°29’N 061°07’W, 24.i.2015. F. Zanetti, S.C. Emidio and T. E. Souza GoogleMaps ; 1 male (78.2:50.1) 2 females (64.2:40.1; 79.9:51.6), INPA 839 View Materials , Yanomami Indigenous Reserve, igarapé Inajá, trib. of rio Parima , rio Uraricoera basin, PIN Parafuri , 03°17’59”N 064°00’30”W, 22.iv.1994, leg. L.S. Aquino and U.C. Barbosa. GoogleMaps

Distribution. Venezuela and Brazil (Roraima)

( Rodriguez and Pereira, 1992; Magalhães et al., 2014).

Remarks. Rodriguez and Pereira (1992) described a new subspecies, F. estevisi siapensis Rodríguez and Pereira, 1992 , and distinguished it from the nominal subspecies by the mesial lobe of the G1, presenting “the proximal margin concave and the distal margin regularly arched”, giving it a thumb-like appearance, whereas the nominal subspecies has a mesial lobe with proximal and distal margins more or less straight, showing a conical shape. The specimens from Roraima have a G1 with mesial lobe bearing a conical appearance ( Fig. 1B, C View Figure 1 ) and are therefore assigned to the nominal species. Besides, the localities of the Roraima specimens (particularly those of the Miang River) ( Fig. 3 View Figure 3 ) are not geographically distant from the localities in the upper Caroni River presented by Rodriguez and Pereira (1992). According to these authors, the nominal form is distributed in the southeastern portion of the state of Bolívar, in the “Gran Sabana” region, mainly in tributaries of the upper Caroni River coming from the slopes of Mount Roraima and draining to the Orinoco River Basin, while F. estevisi siapensis occurs in the Siapa and Cunucunuma Rivers, in the Venezuelan state of Amazonas.