Michael C. Orr
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View article: Nest Architecture Drives Sex-Specific Emergence Success in a Predator Wasp (Hymenoptera, Vespidae, Discoelius wangi)
Nest Architecture Drives Sex-Specific Emergence Success in a Predator Wasp (Hymenoptera, Vespidae, Discoelius wangi) Open
Predatory insects play a crucial role in maintaining ecosystem balance. Among them, members of the subfamily Zethinae, as natural enemies of herbivorous pests, have reproductive success closely linked to nest architecture, as this limits t…
View article: Understanding the adequacy and representativeness of species distribution data
Understanding the adequacy and representativeness of species distribution data Open
Species occurrence data is the fundamental unit of any species distribution analysis, biodiversity patterns, species extinction vulnerability, and temporal trends. This data is also a critical component of monitoring progress towards globa…
View article: Sociality and nesting strategy shape the bimodal diversity gradient in bees
Sociality and nesting strategy shape the bimodal diversity gradient in bees Open
Bees are dominant pollinators across native and agricultural plant communities, yet the drivers of their patterns of geographic distribution and functional diversity remain poorly understood. Notably, bees exhibit a bimodal latitudinal div…
View article: A solitary wasp boosts nesting success through nest architecture (Hymenoptera, Vespidae, Anterhynchium flavomarginatum)
A solitary wasp boosts nesting success through nest architecture (Hymenoptera, Vespidae, Anterhynchium flavomarginatum) Open
While nest architecture of social wasps has been extensively studied, the structural adaptations of solitary Eumeninae remain poorly understood, despite their remarkable nesting biology. We set up trap nests for Anterhynchium. flavomargina…
View article: Plant Communities in the Americas Are Highly Bee Dependent Regardless of Biome or Local Bee Diversity
Plant Communities in the Americas Are Highly Bee Dependent Regardless of Biome or Local Bee Diversity Open
Aim All bees depend on angiosperms for survival, while many angiosperms depend on bees for reproduction. However, bee and flowering plant species richness do not peak in the same geographical regions of the world, suggesting that the flora…
View article: How many bee species are there? A quantitative global estimate
How many bee species are there? A quantitative global estimate Open
Robust species richness estimates are critical for meaningful conservation prioritization, understanding ecosystem resilience, and studying evolutionary processes1-4. Yet, they remain elusive even for some of the best-studied groups and re…
View article: Potential Correlation Between <i>Bombus lantschouensis</i> Thoracic Morphology and Flight Behavior
Potential Correlation Between <i>Bombus lantschouensis</i> Thoracic Morphology and Flight Behavior Open
Remarkably little modern work has investigated the thoracic structures of insects and their relationship to flight locomotion. Most studies focus exclusively on either morphology or flight kinematics. In this study, we explore within‐speci…
View article: Identification and expression of detoxification genes provide insights into host adaptation of the walnut pest Atrijuglans aristata
Identification and expression of detoxification genes provide insights into host adaptation of the walnut pest Atrijuglans aristata Open
The gene number of the detoxification-related families in the A. aristata genome is close to that of other specialized insect species. Twelve candidate P450 genes identified in comparative transcriptome analysis are inferred to be involved…
View article: Elevated extinction risk in over one-fifth of native North American pollinators
Elevated extinction risk in over one-fifth of native North American pollinators Open
Pollinators are critical for food production and ecosystem function. Although native pollinators are thought to be declining, the evidence is limited. This first, taxonomically diverse assessment for mainland North America north of Mexico …
View article: Multidimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition
Multidimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition Open
Environmental factors can influence ecological networks, but these effects are poorly understood in the realm of the phylogeny of host-parasitoid interactions. Especially, we lack a comprehensive understanding of the ways that biotic facto…
View article: Multi-dimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition
Multi-dimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition Open
Environmental factors can influence ecological networks, but these effects are poorly understood in the realm of the phylogeny of host-parasitoid interactions. Especially, we lack a comprehensive understanding of the ways that biotic facto…
View article: Application of Artificial Intelligence/Machine Learning to Operations Research
Application of Artificial Intelligence/Machine Learning to Operations Research Open
Artificial Intelligence (AI) and Machine Learning (ML) have become transformative forces across private industry and government sectors, reshaping fields like operations research, logistics, and decision-making. In private industry, AI/ML …
View article: Macro‐evolutionary dynamics dominated by dispersal promote the formation of regional biodiversity hotspot‐insights from hawkmoths (Lepidoptera: Sphingidae) in South China
Macro‐evolutionary dynamics dominated by dispersal promote the formation of regional biodiversity hotspot‐insights from hawkmoths (Lepidoptera: Sphingidae) in South China Open
Aim Rapid loss in global insect diversity has generated substantial public worry due to their critical ecological roles. However, there is controversy about the effectiveness of the global‐scale hotspots in guiding the conservation of dive…
View article: Low-density migratory beekeeping induces intermediate disturbance effects on native bee communities in Tibetan Plateau alpine meadows
Low-density migratory beekeeping induces intermediate disturbance effects on native bee communities in Tibetan Plateau alpine meadows Open
Ecological disturbance can promote or reduce community biodiversity depending on its severity. Beekeeping activities represent a type of ecological disturbance when large numbers of honey bees are introduced to a landscape and interact wit…
View article: Chromosome-level genome assembly of Megachile lagopoda (Linnaeus, 1761) (Hymenoptera: Megachilidae)
Chromosome-level genome assembly of Megachile lagopoda (Linnaeus, 1761) (Hymenoptera: Megachilidae) Open
Megachile is one of the largest bee genera, including nearly 1,500 species, but very few chromosome-level assemblies exist for this group or the family Megachilidae. Here, we report the chromosome-level genome assembly of Megachile lagopod…
View article: Environmental niche models improve species identification in <scp>DNA</scp> barcoding
Environmental niche models improve species identification in <span>DNA</span> barcoding Open
Recent advances in DNA barcoding have immeasurably advanced global biodiversity research in the last two decades. However, inherent limitations in barcode sequences, such as hybridization, introgression or incomplete lineage sorting can le…
View article: Integrative taxonomy of a new species of a bumble bee-mimicking brood parasitic bee, Tetralonioidella mimetica (Hymenoptera, Apoidea, Apidae), investigated through phylogenomics
Integrative taxonomy of a new species of a bumble bee-mimicking brood parasitic bee, Tetralonioidella mimetica (Hymenoptera, Apoidea, Apidae), investigated through phylogenomics Open
A new species of bumble bee-mimicking brood parasitic bee, Tetralonioidella mimetica Orr & Zhu, sp. nov. , is described from China. The systematic placement of this species was initially challenging but was resolved using a combination of …
View article: Impact of pesticide use on wild bee distributions across the United States
Impact of pesticide use on wild bee distributions across the United States Open
The decline of many wild bee species has major consequences for pollination in natural and agro-ecosystems. One hypothesized cause of the declines is pesticide use; neonicotinoids and pyrethroids in particular have been shown to have perni…
View article: Multidimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition
Multidimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition Open
Environmental factors can influence ecological networks, but these effects are poorly understood in the realm of the phylogeny of host-parasitoid interactions. Especially, we lack a comprehensive understanding of the ways that biotic facto…
View article: Multi-dimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition
Multi-dimensionality of tree communities structure host-parasitoid networks and their phylogenetic composition Open
Environmental factors can influence ecological networks, but these effects are poorly understood in the realm of the phylogeny of host-parasitoid interactions. Especially, we lack a comprehensive understanding of the ways that biotic facto…