A review of the anthidiine bees (Apoidea, Megachilidae) in Thailand

Bees of the tribe Anthidiini (Apoidea: Megachilidae) are notable pollinators consisting of resin bees, wool-carder bees, and cleptoparasitic bees. Twelve anthidiine species were historically reported in Thailand, though the taxonomic information of the group was needed revising. In this study, 165 (97♀, 68♂) anthidiine bee specimens deposited at the Chulalongkorn University Natural History Museum, Thailand, were examined with material obtained from various museum collections. Specimens were principally collected in Thailand with some from Laos and Myanmar. Here, at least eight genera and 15 species of anthidiine bees are recognized: Anthidiellum (5), Bathanthidium (1), Eoanthidium (1), Euaspis (4), Pachyanthidium (1), Pseudoanthidium (1), Stelis (1), and Trachusa (1). Dianthidiumchinensis Wu, 1962, Eoanthidiumchinensis (Wu, 1962), Eoanthidiumsemicarinatum Pasteels, 1972, and Eoanthidiumpunjabensis Gupta & Sharma, 1953 are relegated as junior synonyms of Eoanthidium (Hemidiellum) riparium (Cockerell, 1929), stat. nov. Both Anthidiellum (Pycnanthidium) latipes (Bingham, 1897) from Phang Nga and Euaspisaff.wegneri Baker, 1995 from Chumphon were identified as new records for Thailand. Trachusaaff.vietnamensis Flaminio & Quaranta, 2021 from Phitsanulok is a new record for the genus found in Thailand, whereas Pseudoanthidium (Pseudoanthidium) orientale (Bingham, 1897) is a new record for Laos. Annotated comments are provided for some taxa and identification keys for the Thai anthidiine bees is provided.

First occurrence of the little-known genus Noteriades (Hymenoptera, Megachilidae) from Vietnam: discovery of a new species and a key to the Southeast Asian fauna

The little-known megachiline genus Noteriades Cockerell, 1931 is recorded from Vietnam for the first time. A new species, Noteriadeshangkia Tran, Engel & Nguyen sp. nov. is described and figured based on a series of females collected from the provinces of the northern and central highlands of Vietnam. The genus is briefly discussed and a new subtribe is established, Noteriadina Engel, Tran & Nguyen subtrib. nov. of Megachilini. Lastly, an identification key and distribution map are provided for those species occurring in Southeast Asia.