Obidosus Roewerı 1913

Osvaldo Villarreal, Ludson Neves de Ázara & Kury, Adriano Brilhante, 2019, Revalidation of Obidosus Roewerı 1913 and description of two new cave-dwelling species of Protimesius Roewerı 1913 from Brazil (Opiliones: Stygnidae), Journal of Natural History 53 (15), pp. 965-989 : 978-979

Obidosus Roewerı 1913 revalidated

Obidosus Roewer 1931: 154 ; Mello-Leitão 1932: 426; 1935: 112; Roewer 1957: 82; Kury 2003: 230 (type species Obidosus amplichelis Roewer, 1931 , by monotypy).

Etymology

From toponym Óbidos. Gender masculine.

Diagnosis

Species with dorsal scutum type epsilon (never iota, as is frequently present in other Protimesius ). Scutal area III with two paramedian erected spines. Leg III – IV without tarsal scopula, tarsal process normal sized ( Figure 6 (b)), without terminal long seta; femur, patella and tibia without particular ornamentation, or with conspicuous tubercles on the males (e.g. O. bahiensisı O. evelineaeı O. laevis ). Penis: without ventral crack between the malleus and lamina parva (LP); ventral surface of the LP without microsetae (condition only known to some species) ( Figure 7 (g,h)). MS B on the malleus, and MS A1 – A2 located on the truncus ( Figure 7 (g,h)); MS D2 usually larger than MS D1.

Included species

Obidosus albilineatus Roewer, 1957 restored combination, Obidosus amigos (Ochoa and Pinto-da-Rocha, 2013) new combination, Obidosus amplichelis Roewer, 1931 restored combination, Obidosus apiacas (Pinto-da-Rocha, 2000) new combination, Obidosus bahiensis (Pinto-da-Rocha and Villarreal, 2009) new combination, Obidosus boibumba (Villarreal-Manzanilla and Pinto-da-Rocha, 2006) new combination, Obidosus carnaval (Villarreal-Manzanilla and Pinto-da-Rocha, 2006) new combination, Obidosus cirio (Villarreal-Manzanilla and Pinto-da-Rocha, 2006) new combination, Obidosus coxalis (Roewer, 1931) new combination, Obidosus evelineae (H. Soares and B. Soares, 1978) new combination, Obidosus foliadereis (Villarreal-Manzanilla and Pinto-da-Rocha, 2006) new combination, Obidosus jirau (Bragagnolo, 2013) new combination, Obidosus junina (Villarreal-Manzanilla and Pinto-da-Rocha, 2006) new combination, Obidosus kakinte (Ochoa and Pinto-da-Rocha, 2013) new combination, Obidosus laevis (SØrensen, 1932) new combination, Obidosus longipalpis (Roewer, 1943) new combination, Obidosus machiguenga (Ochoa and Pinto-da-Rocha, 2013) new combination, Obidosus mendopticus (H. Soares, 1978) new combination, Obidosus osvaldoi (Kury and Pinto-da-Rocha, 2008) new combination, Obidosus palpalis (Roewer, 1931) new combination, Obidosus regalo (Bragagnolo, 2013) new combination, Obidosus trocaraincola (Pinto-da-Rocha, 1997) new combination.

Combined distribution

Brazil (Acre, Amazonas, Bahia, Espírito Santo, Maranhão, Mato Grosso, Pará, Rondônia, Tocantins), Colombia (Leticia), Ecuador (Napo) and Peru (Cusco, Madre de Dios, Ucayali) ( Figure 10 (a)).

Figures

Figure 6. Protimesius orcus sp. nov. male paratype (MNRJ 4279)ı (a) tarsus IVı lateral view (arrow points the reduced tarsal process and the absence of the scopula); (c) basal setiferous tubercles of the pedipalpal tibia (arrow points bifid border of the socket). Obidosus carnaval comb. nov. (MNRJ 17ı510): (b) tarsus IVı lateral view (arrow points the normal tarsal process and the presence of scopula with not spatulated setae). Scale bars (aıb) = 100 µmı (c) = 50 µm.

Figure 7. Protimesius lucifer sp. nov.ı male paratype (MNRJ 4279) (a–c); Protimesius orcus sp. nov.ı male paratype (MNRJ 9251) (d–f) and Obidosus carnaval comb. nov. (MNRJ 17ı510) (g–h). (a–h) Penisı distal portion: (aıdıg) dorsal view; (bıe) lateral view; (cıfıh) ventral view. Scale bars = 50 µm (a–f); 100 µm (gıh).

Figure 10. South America showing the geographical distribution of the genera Protimesius and Obidosus (a) and the detailed distribution of Protimesius species as defined here (b). Shaded background areas are the Morrone’s (2014) regionalisation of the Neotropics.