A new species of &lt;i&gt;Megachile&lt;/i&gt; (&lt;i&gt;Litomegachile&lt;/i&gt;) from Cuba, the Antilles (Hymenoptera: Megachilidae)

Sheffield, Cory S.; Genaro, Julio A.

doi:10.17161/jom.v0i19.4564

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…Since Sheffield et al . (2011b) revised the 38 species in Canada, Bzdyk (2012) and Sheffield and Genaro (2013) raised two subspecies to species ( M. snowi Mitchell and M. cleomis Cockerell, respectively), resulting in 40 species in Canada. In all, 43 barcode index numbers have been recorded, but one species, M. umatillensis (Mitchell) has no barcode index number associated with it, M. gemula Cresson and M. relativa Cresson each have two, and M. pugnata Say has three (supporting subspecies).…”

Section: Resultsmentioning

confidence: 99%

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Contribution of DNA barcoding to the study of the bees (Hymenoptera: Apoidea) of Canada: progress to date

et al. 2017

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Abstract-Bees (Hymenoptera: Apoidea, Apiformes) are taxonomically and ecologically diverse, with a wide range of social complexity, nesting preferences, floral associations, and biogeographic restrictions. A Canadian bee checklist, greatly assisted by the gene-assisted approach of DNA barcoding, is nearing completion. Previous evaluation of bee diversity in Canada, assisted by DNA barcoding, was restricted to Nova Scotia, which contains about 25% of the bee species in the country. Here, we summarise efforts to date to build a comprehensive DNA barcode library supporting bee taxonomic studies in Canada, consisting of more than 12 500 barcode-compliant sequences yielding 811 distinct barcode index numbers (BINs). This appears to represent~95% of the 856 bee species presently recorded from Canada, but comparison with known morphological species in each genus shows that some genera are still under-sampled or may contain cryptic taxa, with much taxonomic work still to be done on bees in Canada. This is particularly true within the taxonomically difficult genera Andrena Fabricius (Andrenidae), Hylaeus Fabricius (Colletidae), Melissodes Latreille (Apidae), Nomada Scopoli (Apidae), Osmia Panzer (Megachilidae), and Sphecodes Latreille (Halictidae). DNA analysis will likely be a key asset in resolving bee taxonomic issues in Canada in the future, and to date has even assisted studies of well-known bee taxa. Here we present summaries of our results, and discuss the use of DNA barcoding to assist future taxonomic work, faunal lists, and ecological studies.

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Section: Resultsmentioning

confidence: 99%

“…Megachile Latreille. Since Sheffield et al (2011b) revised the 38 species in Canada, Bzdyk (2012) and Sheffield and Genaro (2013)…”

Section: Family Megachilidaementioning

confidence: 99%

Contribution of DNA barcoding to the study of the bees (Hymenoptera: Apoidea) of Canada: progress to date

et al. 2017

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“…Though geologically young, this is the first report of three-dimensionally preserved Megachile nest cells that shows rare preservation and life-stages. The pupal morphology, nesting behavior, and cell construction of LACMRLP 388E best match M. gentilis, a member of the native Nearctic Litomegachile Mitchell [24] , a subgenus that today ranges from southern Canada to Cuba and southern Mexico [5] , [25] , [26] .…”

Section: Introductionmentioning

confidence: 99%

Leafcutter Bee Nests and Pupae from the Rancho La Brea Tar Pits of Southern California: Implications for Understanding the Paleoenvironment of the Late Pleistocene

et al. 2014

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The Rancho La Brea Tar Pits is the world’s richest and most important Late Pleistocene fossil locality and best renowned for numerous fossil mammals and birds excavated over the past century. Less researched are insects, even though these specimens frequently serve as the most valuable paleoenvironemental indicators due to their narrow climate restrictions and life cycles. Our goal was to examine fossil material that included insect-plant associations, and thus an even higher potential for significant paleoenviromental data. Micro-CT scans of two exceptionally preserved leafcutter bee nest cells from the Rancho La Brea Tar Pits in Los Angeles, California reveal intact pupae dated between ∼23,000–40,000 radiocarbon years BP. Here identified as best matched to Megachile (Litomegachile) gentilis Cresson (Hymenoptera: Megachilidae) based on environmental niche models as well as morphometrics, the nest cells (LACMRLP 388E) document rare preservation and life-stage. The result of complex plant-insect interactions, they offer new insights into the environment of the Late Pleistocene in southern California. The remarkable preservation of the nest cells suggests they were assembled and nested in the ground where they were excavated. The four different types of dicotyledonous leaves used to construct the cells were likely collected in close proximity to the nest and infer a wooded or riparian habitat with sufficient pollen sources for larval provisions. LACMRLP 388E is the first record of fossil Megachile Latreille cells with pupae. Consequently, it provides a pre-modern age location for a Nearctic group, whose phylogenetic relationships and biogeographic history remain poorly understood. Megachile gentilis appears to respond to climate change as it has expanded its distribution across elevation gradients over time as estimated by habitat suitability comparisons between low and high elevations; it currently inhabits mesic habitats which occurred at a lower elevation during the Last Glacial Maximum ∼21,000 years ago. Nevertheless, the broad ecological niche of M. gentilis appears to have remained stable.

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“…About 70% of the papers were on several aspects of the systematics of both living and extinct taxa. A total of three genera Gonzalez et al, 2013bGonzalez et al, , 2013c, two subgenera (Engel, 2013e;Engel et al, 2013b), and 19 species were published, including four fossil species and five cleptoparasites (Engel, 2013b(Engel, , 2013c(Engel, , 2013dEngel & Breitkreuz, 2013;Engel & Packer, 2013;Gibbs & Dumesh, 2013;Griswold, 2013;Sheffield & Genaro, 2013) (Table 1) (Figs. 1-6).…”

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confidence: 99%

<i>Journal of Melittology</i>: First year ‘abuzz’

2014

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A new species of <i>Megachile</i> (<i>Litomegachile</i>) from Cuba, the Antilles (Hymenoptera: Megachilidae)

Cited by 4 publications

References 12 publications

Contribution of DNA barcoding to the study of the bees (Hymenoptera: Apoidea) of Canada: progress to date

Contribution of DNA barcoding to the study of the bees (Hymenoptera: Apoidea) of Canada: progress to date

Leafcutter Bee Nests and Pupae from the Rancho La Brea Tar Pits of Southern California: Implications for Understanding the Paleoenvironment of the Late Pleistocene

<i>Journal of Melittology</i>: First year ‘abuzz’

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