- FondsCR-AN-AH-AWT - Álvaro Wille Trejos
- SérieARTIREVI - Artículos de Revista
- 7 en plus...
- Pièce000008 - Artículo A new species of stingless bee tigna (plebeia) from Costa Rica, with descriptions of its general behavior and cluster type nest by Álvaro Wille
- Pièce000009 - Artículo A new species of stingless bee (meliponini) from Costa Rica by Álvaro Wille
- Pièce000010 - Artículo A new fossil stingless bee (meliponini) form the amber of Chiapas México, by Álvaro Wille
- Pièce000011 - Artículo Phylogeny and relationships among the genera and subgenera of the stingless bees (meliponinae) of the world by Álvaro Wille
- Pièce000012 - Artículo Notes on the morphology of the musculature of the salivary siringe and neck región of bees by Álvaro Wille
- Pièce000013 - Artículo Observations on the nest of Costa Rican Halictus with taxonomic notes on Neotropical species (Hymenoptera: Halictidae) by Álvaro Wille and Charles D. Michener