Rhinetula denticrus Friese, 1922

Rhinetula denticrus Friese View in CoL

( Figs. 1–6 View Figures 1–6 .)

DIAGNOSIS: Male. Head with erect pubescence dark brown ( Fig. 1 View Figures 1–6 ). Clypeus with conspicuous longitudinal striae; supraclypeal area with strong transverse striae that extend across the middle ( Fig. 3 View Figures 1–6 ). Legs and terga dark brown, with some areas amber. Hind leg with ventral femoral tooth long and acute ( Fig. 2 View Figures 1–6 ). Erect setae on T4–T6 dark brown, decumbent hairs relatively sparse and not entirely covering the terga ( Gonçalves & Melo, 2006; Roberts & Brooks, 1987). Genitalia ( Figs. 4 and 5 View Figures 1–6 ); S6 and T7 as in Fig. 6 View Figures 1–6 .

MATERIAL EXAMINED: 1 ♂ [ UAPU 7036 ], [ México], Cárdenas, TAB [ Tabasco], [15 msnm], [Coordinates: 18.2, -93.6] 28-V-80, [ 28/05/1980], Col. [Collector] E. Montero \ Rhinetula denticrus Fr. [Friese] Det. [Determined] [Philippe] Sagot 2022 [handwritten] ( ECOAB). Deposited in the Colección Entomológica del Centro Occidente Mexicano “Gonzalo Halffer Salas” ( IEXA-CECOM), Instituto de Ecología , INECOL, A.C., Centro Regional del Bajío , Pátzcuaro, Michoacán, México .

FLORAL RECORDS: Cassia L. ( Fabaceae ), Croton panamensis Müll.Arg. ( Euphorbiaceae ), Tapirira guianensis Aubl. ( Anacardiaceae ), Psychotria L. ( Rubiaceae ) ( Basset et al., 2003; Roberts & Brooks, 1987).

NESTING: Underground/Communal. In a naturally regenerating, abandoned coffee plantation in Costa Rica, nests of R. denticrus were documented in loose soil within an abandoned leafcutter ant nest ( Formicidae : Attini , Atta spp. ). Multiple entrance holes were observed in the ground, with at least three bees actively entering and exiting their nests around 7 a.m. (Hsu, pers. comm.).

DISTRIBUTION: Colombia: Departamento Antioquia: Amalfí, San Cristóbal, San Luis. Costa Rica: Provincia Alajuela: San Carlos. Provincia Cartago: Turrialba, Provincia de Heredia: Sarapiquí, Puerto Viejo, Provincia Puntarenas: Garabito, Golfito, Playón. Provincia San José: San José. Honduras: Provincia Atlántida: Tela, Provincia de Cortes: Santa Cruz de Yojoa. Panamá: Provincia de Zona del Canal: Isla Barro Colorado, Zona del Canal de Panamá. Provincia Colón: Gamboa. Provincia de Darién: Parque Nacional de Darién, Provincia Panamá: Capira, El Llano, Santa Rita ( Ascher & Pickering, 2023; Roberts & Brooks, 1987).