Ptilobaptus cinctus Townes, 1971

(Figs. 4 A-F, 5)

Ptilobaptus cinctus Townes, 1971: 11 [original description]; Gauld, 2000: 151 [taxonomic review]. Female holotype, Peru (EMUS) [Entomology Museum, Utah State University, Logan, Utah, USA] .

Diagnosis: This species can be distinguished from other Ptilobaptus species by the combination of the following characters: black flagellum with a wide white stripe in the center (Fig. 4A); mediodorsally complete occipital carinae (Fig. 4C); more or less entirely black mesosoma (Fig. 4A); simple posterior femur without any trace of a ventral tooth (Fig. 4B).

Material examined: 3 ♀♀. BRAZIL, AM [Amazonas] – Careiro Castanho BR-319, km 181, Sítio São Paulo, 04°12′48″S, 60°49′04″W, Malaise grande, 09-21.XI.2016, J.A. Rafael & F.F. Xavier Fº leg, Rede BIA (2 ♀♀, INPA). RR [Roraima]-Amajari,Serra do Tepequém, SESC 03°44′45″N, 61°43′40″W, Malaise, 01-15.II.2016, R. Boldrini & J.A. Rafael leg Rede BIA Ptilobaptus Det. D.R.R. Fernandes 2019 UCE _ INPA _P_010 (1 ♀, INPA).

Geographical records: Brazil * (Amazonas* and Roraima *), Costa Rica, Peru (Fig. 5).

Remarks: The females analyzed here are morphologically similar (Fig. 4 A-B), except for the median longitudinal carinae which are distinct between the anterior and posterior transverse carina (Fig. 4 D-E) or incomplete on the left and/or right side of the area superomedia (Fig. 4 F-G).