Nesting biology ofCentris(Paracentris)burgdorfi(Apidae: Centridini)

First nesting site record of the bee species Diadasina paraensis (Ducke, 1912) (Hymenoptera, Apidae, Emphorini)

“…Ground-nesting behavior is a common feature among solitary bees and site selection is an important step of the nesting process, playing a key role in bee fitness (Danforth et al 2019;Antoine & Forrest 2021;Gardein et al 2022). The substrate directly impacts the selection of the nesting site since females of different ground-nesting bee species shows clear preferences for some specific soils which provides, for example, some favorable thermal or humidity conditions (Sabino et al 2020;Antoine & Forrest 2021). Floral and nesting resources are the most important factors for females in relation to habitat suitability (Roulston & Goodell 2011;Harmon-Threatt 2020;Antoine & Forrest 2021;Sabino et al 2020;Gardein et al 2022).…”

“…The substrate directly impacts the selection of the nesting site since females of different ground-nesting bee species shows clear preferences for some specific soils which provides, for example, some favorable thermal or humidity conditions (Sabino et al 2020;Antoine & Forrest 2021). Floral and nesting resources are the most important factors for females in relation to habitat suitability (Roulston & Goodell 2011;Harmon-Threatt 2020;Antoine & Forrest 2021;Sabino et al 2020;Gardein et al 2022). For bees, a local habitat quality (protected from adverse weather conditions, excessive humidity, predators, and parasites) with proximity to food plants for larval development and survival is essential to maximize the success of their brood and species persistence since solitary bees do not provide care to their offspring after provisioning and sealing the brood cells (Roulston & Goodell 2011;Harmon-Threatt 2020;Sabino et al 2020;Antoine & Forrest 2021).…”

Notes on the nest architecture of Centris (Centris) caxiensis Ducke (Hymenoptera: Apidae) in an urban dry forest fragment in northeastern Brazil

“…Furthermore, Rozen and Buchmann (1990) suggested that the presence of a hollow central process probably facilitates the exchange of gases between the internal and external environment since the brood cells of these species are lined at the beginning of construction and the waterproofing layer would probably make it difficult to exchange gases through the brood cell wall. However, different brood cell shapes have been reported for C. pallida Fox (Alcock et al 1976;Rozen and Buchmann 1990) and C. burgdorfi Friese (Sabino et al 2020), in which the top of the operculum does not have a hollow central process.…”

“…Species of the subgenera Centris s. str. Fabricius, C. (Melanocentris) Friese, C. (Paracentris) Cameron, C. (Penthemisia) Moure, C. (Trachina) Klug, and C. (Wagenknechtia) Moure construct their nests in the flat ground or earth banks (Coville et al 1983;Aguiar and Gaglianone 2003;Sabino et al 2020). On the other hand, species of C. (Ptilotopus) Klug nest in termitaria (Gaglianone 2001), and those of the subgenera C. (Hemisiella) Moure, C. (Heterocentris) Cockerell and C. (Xanthemisia) Moure build their nests in pre-existing cavities such as wooden galleries made by other insects or abandoned nests of other bee and wasp species (Frankie et al 1993;Camillo et al 1995;Aguiar et al 2005).…”

Nesting of the leaf-cutter bee Megachile (Ptilosarus) microsoma Cockerell (Hymenoptera: Megachilidae) in Trinidad, West Indies

“…After a pollen trip, the female entered the nest headfirst, performed some unidentified activities inside the nest -maybe a general inspection as have been recorded for other solitary bee (e.g. Sabino et al 2020) -for backed out and entered again, this time abdomen-first, to unload the pollen from her ventral scopa.…”