Two new records of gynandromorphism in bees are described and illustrated for Paratrigona glabella and Augochlora amphitrite. The specimens show a mixture of male and female features, complete in Augochlora and on head and mesosoma in Paratrigona. Including the specimen described herein, gynandromorphs are now known for a total of three species in Meliponini bees and three species in Augochlori...

As a result of human activity, longleaf pine (Pinus palustris Miller) forests in the southern United States have been lost or drastically altered. Many of the plant species that historically occupied those forests now persist only as remnants and are classified as threatened or endangered. In order to safeguard such species, a better understanding of their pollination ecology is needed. We iden...

A new species of Habralictus Moure (Apoidea, Halictidae) is described from the island of Dominica, Habralictus gonzalezisp. n. The species is distinguished from other West Indian Habralictus and a key is provided to the West Indian Habralictus. Brief comments on the genus Habralictus and bee species of Dominica are provided.

This paper reports the first record of the genus Homalictus from China. We describe and illustrate H. (H.) nabanensis sp. n. collected from the Naban River Watershed National Nature Reserve, Xishuangbanna, Yunnan, China. The type specimens are deposited in Institute of Zoology, Chinese Academy of Sciences, Beijing, China.

Social competition but not subfertility leads to a division of labour in the facultatively social sweat bee Megalopta genalis (Hymenoptera: Halictidae) Adam R. Smith *, Karen M. Kapheim , Sean O’Donnell , William T. Wcislo a a Smithsonian Tropical Research Institute, Panama Department of Ecology & Evolutionary Biology, University of California, Los Angeles Animal Behavior Area, Department of Ps...

Biology of a nocturnal bee, Megalopta atra (Hymenoptera: Halictidae; Augochlorini), from the Panamanian highlands Simon M. Tierney a; Therany Gonzales-Ojeda b; William T. Wcislo a a Smithsonian Tropical Research Institute, Ancón, Panama b Facultad de Ciencias Forestales y Medio Ambiente, Universidad Nacional de San Antonio Abad del Cusco Sede Puerto Maldonado Jr. San Martín 451, Madre de Dios, ...

Callosphecodes Friese, 1909, a synonym or perhaps subgenus of Sphecodes Latreille, 1804, is known on the basis of one female of Sphecodes ralunensis (Friese, 1909)from New Britain and one female and one male of a similar species, Sphecodes manskii (Rayment, 1935) from northeastern Australia. The male is here described for the first time and the females of the two species are compared for the fi...

Lasioglossum (Lasioglossum) subopacum (Smith) is recorded from the Korean Peninsula for the first time. Lasioglossum (Lasioglossum) okinawa Ebmer et Maeta from Japan is ranked to a subspecies of Lasioglossum (Lasioglossum) subopacum judging from the characteristics of the male. The male of Lasioglossum (Lasioglossum) subopacumokinawa is described for the first time. Some bionomical notes of bot...