A key to the subgenera of the stingless bee genus Melipona (Hymenoptera: Apidae)

The infrageneric classification of the stingless bee genus Melipona Illiger (Apinae: Meliponini) has historically consisted of four subgenera. Here a slightly expanded subgeneric system is presented in the context of a key to subgenera, with two new subgenera established: Meliponotes subgen. n. and Mouremelia subgen. n.

A conspectus of the picture-winged flies (Diptera: Ulidiidae) of India

An overview of the Ulidiidae fauna of India is presented. Five species Euxesta pechumani, Myennis octopunctata, Physiphora alceae, P. clausa and P. euphorbiana are recognized. The report of Euxesta pechumani is the first record of the genus from India. Diagnosis, general distribution and notes on biology of all these species are provided.

Ptenidium (Matthewsium) coxi: a new species of Ptiliidae (Coleoptera) from Chile

Ptenidium (Matthewsium) coxi, sp. n. (Ptiliidae: Coleoptera), the first species of the genus to be recorded from Chile, is described and illustrated.

A key to the subgenera of the orchid bee genus Euglossa (Hymenoptera: Apidae)

The infrageneric classification of the orchid bee genus Euglossa Latreille (Apinae: Euglossini) has historically comprised six or seven subgenera and a plethora of species groups, many of which are demonstrably monophyletic. Nonetheless, challenges remain, particularly in relation to the subgenus Glossurella Dressler. Herein a new key to subgenera is presented and four problematic species groups of Glossurella are removed to separate subgeneric entities: Eurhytisma subgen. n., Glossurodes subgen. n., Parisoglossa subgen. n., and Trachyglossa subgen. n.

Three remarkable new species of Neotropical Sylvicola (Diptera: Anisopodidae) with elongate mouth parts

Three new species of Sylvicola (Anisopodidae) are described from Costa Rica. Each of these species has an elongated mouthpart structure not previously observed in the genus or family. This may be an adaptation to feeding from angiosperm flowers.