Three new bee species of Rhophitulus Ducke (Hymenoptera, Apidae, Protandrenini) from Argentina and Brazil.

@article{Ramos2014ThreeNB,
  title={Three new bee species of Rhophitulus Ducke (Hymenoptera, Apidae, Protandrenini) from Argentina and Brazil.},
  author={Kelli dos Santos Ramos},
  journal={Zootaxa},
  year={2014},
  volume={3847 4},
  pages={
          545-56
        }
}
This work describes three newly discovered species of Rhophitulus Ducke, 1907: R. labiosus n. sp. from Minas Gerais (Brazil), R. mimus n. sp. from Salta (Argentina), and R. xenopalpus n. sp. from Catamarca and Tucumán (Argentina). Photographs of the holotype of Rhophitulus steinbachi (Friese, 1916) are provided, and modifications in the morphology of a female of R. xenopalpus n. sp. when parasitized by Strepsiptera are recorded for the first time for the genus.  
Nesting Biology and Immature Stages of the Panurgine Bee Genera Rhophitulus and Cephalurgus (Apoidea: Andrenidae: Protandrenini)
TLDR
Nesting information on the communal ground-nesting Argentinian bees Rhophitulus xenopalpus Ramos and R. mimus Ramos is presented, which is compared with what is known concerning the closely related Brazilian bee Cephalurgus anomalus Moure and Lucas de Oliveira.
Phylogenetic Relationships of a New Genus of Calliopsine Bees from Peru, with a Review of Spinoliella Ashmead (Hymenoptera: Andrenidae)
ABSTRACT We establish a new genus for an unusual species of Peruvian calliopsine bees (Panurginae: Calliopsini) that was initially reported in the literature as an undescribed species of Spinoliella

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Nesting information on the communal ground-nesting Argentinian bees Rhophitulus xenopalpus Ramos and R. mimus Ramos is presented, which is compared with what is known concerning the closely related Brazilian bee Cephalurgus anomalus Moure and Lucas de Oliveira.
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