The bee genus Anthidiellum in Vietnam: descriptions of five new species and the first male of Anthidiellum coronum (Hymenoptera, Megachilidae)

Abstract

The Vietnamese fauna of bees in the Anthidiellum Cockerell (Megachilinae, Anthidiini) is reviewed. Seven species are recognized, representing two subgenera. Five new species are described and figured as: Anthidiellum (Clypanthidium) nahang Tran, Engel & Nguyen, sp. nov., A. (Pycnanthidium) ayun Tran, Engel & Nguyen, sp. nov., A. (P.) chumomray Tran, Engel & Nguyen, sp. nov., A. (P.) flavaxilla Tran, Engel & Nguyen, sp. nov., and A. (P.) cornu Tran, Engel & Nguyen, sp. nov. from the northern and central highlands of Vietnam. Two previously described species are newly recorded for the fauna: A. (P.) carinatum (Wu) and A. (P.) coronum (Wu), with the male of the latter species described and illustrated for the first time. An identification key is provided for all species of Anthidiellum occurring in Vietnam.

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

“… cornu Tran & Engel, 2023. The group contains medium-sized bees without carina on their hindlegs ( Griswold 2001 ; Niu et al 2016 ; see also Tran et al 2023 ).…”

Evaluation of wild bee diversity in fruit orchards within the Ba Den mountain area, Tay Ninh Province, Vietnam

“…The remaining genera recorded from 1-2 species. Genera Amegilla, Megachille, Ceratina, and Apis, together with the genus Xylocopa, are the most diverse species count recorded in Vietnam in previous studies [5,24,25]. Among the bee species, four species (Apis florea, A. cerana, A. dorsata, and Amegilla confusa) are widely distributed and have been recorded in Tay Ninh province in the privious study of Le (2008) [24].…”

“…In addition to the three common families with diverse species numbers, namely Apidae, Megachilidae, and Halictidae. Notably, the families Melittidae and Collectidae stand as rarities, with only a scant number of species, with 1-2 species per family recorded in North and Central Vietnam [5,18,19]. Similar to previous studies by Le (2008) [24], Khuat et al (2012) [25], and Tran et al (2020) [5], the Apidae family has the highest number of species, followed by the Megachilidae family, and the Halictidae family has the lowest number of species in the three common families.…”

“…Meanwhile, the remaining species are recorded for the first time in the study area. Some species, such as Thyreus himalayensis, Xylocopa latipes, Euaspis polyensis, Amegilla zonata, and Megachile conjuncta, are widely distributed in Vietnam [5,24,25,26,27]. Tetragonula collina is one of the most common and widely distributed species in Vietnam and Southeast Asia [26,27].…”

“…Within agricultural ecosystems, wild bees are plentiful and fulfill a 1349 (2024) 012020 IOP Publishing doi:10.1088/1755-1315/1349/1/012020 2 crucial role in the pollination of various crops. The absence of insect pollinators can lead to diminished seed sets, potentially resulting in the decline of flowering plant species, including numerous fruits [3,4,5]. In addition, many wild bee species display specialization in terms of nesting habitats and dietary preferences, making them highly responsive to alterations in habitat conditions.…”