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Michael S. Engel - One of the best experts on this subject based on the ideXlab platform.
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Unique Metasomal Musculature in Sweat Bees (Hymenoptera: Apoidea: Halictidae) Revealed by Micro-CT Scanning
American Museum Novitates, 2019Co-Authors: Hollister W. Herhold, Michael S. Engel, Steven R. Davis, Corey Shepard. Smith, David A. GrimaldiAbstract:Bees of the family Halictidae (Apoidea: Anthophila) have three pairs of thick, bundled muscles that are circular to subcircular in cross section within the first metasomal segment, as revealed by micro-CT scanning of 16 species in 15 genera of five bee families. In nonhalictids and the basal halictid subfamily Rophitinae, these muscles are planar (flat and sheetlike), typically lying between the anterior air sacs and abdominal wall. In Nomiinae and Halictinae, these muscles, especially the dorsal-ventral pair, bulge into air-sac space, partly enveloped by air-sac membrane. A possible function may be to facilitate metasomal compression and contraction, and thus air flow. The bundled shape of these derived halictid muscles is similar to that of flight muscles, but further data is needed to determine if they are fibrillar, which would suggest a completely different function.
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revision of the bee genus chlerogella hymenoptera Halictidae part iv a new species from southwestern colombia
Journal of Melittology, 2014Co-Authors: Michael S. Engel, Victor H. Gonzalez, Ismael A HinojosadiazAbstract:A new species of the diverse augochlorine bee genus Chlerogella Michener (Halictinae: Augochlorini) is described and figured from southwestern Colombia. Chlerogella anchicaya Engel, Gonzalez, & Hinojosa-Diaz, new species, is similar to C . agaylei Engel and C . materdonnae Engel, both occurring on the eastern slopes of the Andes in Ecuador. There are also some similarities with C . eumorpha Engel from the western Andean foothills in northern Ecuador, but differences in rostral length and male terminalia can distinguish these species. Revised couplets are provided to the South American species of Chlerogella to permit identification of the new species.
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the bee genus caenaugochlora in venezuela hymenoptera Halictidae
Journal of Melittology, 2014Co-Authors: Michael S. EngelAbstract:Two new species of the augochlorine bee genus Caenaugochlora Michener are described and figured. Caenaugochlora ( Caenaugochlora ) elpidia Engel, new species, and C . ( C .) pantochlora Engel, new species, are the first formally described species of their genus from Venezuela. The new species, both from Aragua, can be distinguished from other members of the subgenus by their coloration and pattern of integumental sculpturing.
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The Apoidea (Hymenoptera) Fauna of Little Tobago Island, West Indies
Journal of the Kansas Entomological Society, 2014Co-Authors: Allan W. Hook, Michael S. Engel, John L. Neff, Helen CourtAbstract:Abstract Twenty-four species of Apoidea representing 17 species of apoid wasps (Sphecidae and Crabronidae) and seven species of bees (Apidae and Halictidae) are recorded from Little Tobago Island, West Indies.
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Bees visiting squash (Cucurbita moschata Duchesne ex Poiret) in southwestern Colombia (Hymenoptera: Apoidea)
Journal of Melittology, 2013Co-Authors: Giselle Zambrano-g, Victor H. Gonzalez, Ismael A. Hinojosa-díaz, Michael S. EngelAbstract:This note records for the first time 12 bee species belonging to eight genera of Apidae and Halictidae as visitors of cultivated squash ( Cucurbita moschata Duchesne ex Poiret: Cucurbitaceae) in the municipality of El Patia, Department of Cauca, southwestern Colombia. Two further bee species are also recorded from a crop visited in the Department of Huila.
Maxim Yu. Proshchalykin - One of the best experts on this subject based on the ideXlab platform.
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the bees of the family Halictidae hymenoptera described by ferdinand morawitz from the collection of aleksey fedtschenko
ZooKeys, 2020Co-Authors: Yulia V Astafurova, Maxim Yu. ProshchalykinAbstract:The type specimens of the family Halictidae, described by Ferdinand Morawitz from the collection of Aleksey Fedtschenko deposited in the Zoological Museum of the Moscow State University and in the Zoological Institute, Russian Academy of Sciences, St. Petersburg (Russia), are critically reviewed. Precise information with illustrations of types for 43 taxa is provided. Lectotypes are here designated for the following seven nominal taxa: Halictus aprilinus Morawitz, 1876, H. cingulatus Morawitz, 1876, H. laevinodis Morawitz, 1876, H. limbellus Morawitz, 1876, H. nasica Morawitz, 1876, H. rhynchites Morawitz, 1876 and H. vulgaris Morawitz, 1876.
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the type specimens of bees hymenoptera apoidea deposited in the zoological institute of the russian academy of sciences st petersburg contribution iii family Halictidae genera halictus latreille 1804 and sphecodes latreille 1804
Zootaxa, 2020Co-Authors: Yulia V Astafurova, Maxim Yu. ProshchalykinAbstract:The type specimens for names of bee taxa in the genera Halictus Latreille, 1804 and Sphecodes Laterille, 1804 of family Halictidae deposited in the Zoological Institute, Russian Academy of Sciences (St. Petersburg) are reviewed. Name-bearing types of 39 species and subspecies are illustrated and detailed information is provided (taxa include 15 described by F. Morawitz; nine by Yu. Pesenko; eight by P. Bluthgen; five by Yu. Astafurova M. Proshchalykin; and two by E. Eversmann). Lectotypes are designated for Halictus flavocallosus Morawitz, 1894, and H. tataricus Bluthgen, 1933.
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the type specimens of bees hymenoptera apoidea deposited in the zoological institute of the russian academy of sciences st petersburg contribution ii family Halictidae subfamilies rophitinae nomiinae and nomioidinae
Zootaxa, 2019Co-Authors: Yulia V Astafurova, Maxim Yu. ProshchalykinAbstract:The type specimens for names of bee taxa in the subfamilies Rophitinae, Nomiinae, and Nomioidinae of family Halictidae deposited in the Zoological Institute, Russian Academy of Sciences (St. Petersburg) are reviewed. Primary types of 63 taxa are illustrated and detailed information is provided (taxa include 20 described by F. Morawitz; 15 by Yu. Pesenko (one of them with N. Davydova and one with A. Pauly); ten by V. Popov; nine by P. Bluthgen; four by E. Eversmann; three by Yu. Astafurova; one by H. Friese, one by A. Ponomareva). A lectotype is designated for Nomia squamata Morawitz, 1894.
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The genus Sphecodes Latreille 1804 (Hymenoptera: Apoidea: Halictidae) in Central Asia
2017Co-Authors: Maxim Yu. ProshchalykinAbstract:Proshchalykin, Maxim Yu. (2017): The genus Sphecodes Latreille 1804 (Hymenoptera: Apoidea: Halictidae) in Central Asia. Zootaxa 4324 (2): 249-284, DOI: https://doi.org/10.11646/zootaxa.4324.2.
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the genus sphecodes latreille 1804 hymenoptera apoidea Halictidae in central asia
Zootaxa, 2017Co-Authors: Yulia V Astafurova, Maxim Yu. ProshchalykinAbstract:Available information on the bees of the genus Sphecodes Latreille 1804 in Central Asia is summarized. Twenty-eight species are currently known from this area. Sphecodes turanicus Astafurova & Proshchalykin, sp. nov. is described from Uzbekistan, Turkmenistan, Tajikistan, and Kazakhstan. Eight species: Sphecodes anatolicus Warncke 1992, S. crassus Thomson 1870, S. croaticus Meyer 1922, S. ferruginatus Hagens 1882, S. miniatus Hagens 1882, S. pellucidus Smith 1845, S. rufiventris (Panzer 1798), and S. spinulosus Hagens 1875 are newly recorded from Central Asia. The status of S. nurekensis Warncke 1992, stat. nov. is raised to species level; S. tadschicus Bluthgen 1935, stat. resurr. is reinstated as a valid taxon. A lectotype is designated for S. gracilior Morawitz 1893. Illustrated keys to both males and females of all species known from Central Asia are provided.
Jerome G Rozen - One of the best experts on this subject based on the ideXlab platform.
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biology and immature stages of the bee nomioides patruelis Halictidae halictinae nomioidini and of its cleptoparasite chiasmognathus pashupati apidae nomadinae ammobatini with a preliminary phylogeny of the Halictidae based on mature larvae apoidea
American Museum Novitates, 2008Co-Authors: Jerome G RozenAbstract:Abstract Mature larvae and pupae of Nomioides patruelis Cockerell and of its cleptoparasite, Chiasmognathus pashupati Engel, collected from the nesting site near Karachi, Pakistan, are described, providing the first account of the immature stages of the respective genera and the first such account for any Nomioidini. An egg of N. patruelis is also described. An analysis, based on both halictid specimens and descriptions from the literature, reveals that the three subfamilies (Rophitinae, Nomiinae, and Halictinae) of Halictidae can be distinguished on the basis of their mature larvae. A key is provided for their identification. Mature larvae of the tribes of the Halictinae are so similar they cannot be distinguished at present, although studies of additional representatives may yield diagnostic features particularly concerning mandibular anatomy and perhaps body size. Features of the mature larvae when mapped onto a phylogeny of the Halictidae (Pesenko, 2000) provide a hypothesis for the sequence of anatom...
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immatures of rophitine bees with notes on their nesting biology hymenoptera apoidea Halictidae
American Museum Novitates, 2008Co-Authors: Jerome G Rozen, Hikme T OzbekAbstract:Abstract This study is a taxonomic overview of the known mature larvae and pupae of the Rophitinae (Halictidae). We either describe and illustrate the mature or nearly mature larvae of the following taxa or provide references to their earlier descriptions: Dufourea holocyanea (Cockerell), D. australis australis Michener, D. mulleri (Cockerell), D. novaeangliae (Robertson), Sphecodosoma (Sphecodosoma) dicksoni (Timberlake), Protodufourea eickworti Bohart and Griswold, Xeralictus timberlakei Cockerell, Systropha planidens Giraud, Rophites (Rhophitoides) canus Eversmann, R. (Rophites) algirus trispinosus Perez, Conanthalictus (C.) conanthi (Cockerell), and C. (Phaceliapis) bakeri Crawford. We present a key to known mature rophitine larvae. We also describe pupae of the following taxa for the first time and compare them with the pupa of S. dicksoni: D. holocyanea, D. australis australis, and R. canus. The phylogenetic relations of the treated taxa are discussed in light of larval characters, and we discuss th...
Jason Gibbs - One of the best experts on this subject based on the ideXlab platform.
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bees of the family Halictidae thomson 1869 from dominica lesser antilles hymenoptera apoidea
European journal of taxonomy, 2016Co-Authors: Jason GibbsAbstract:The bees of the family Halictidae Thomson, 1869 from Dominica are reviewed. Seven new species are described and illustrated: Lasioglossum ( Dialictus ) kalinago sp. nov., L. ( D. ) dominicense sp. nov., L. ( D. ) kilpatrickae sp. nov., L. ( Habralictellus ) roseauense sp. nov., Sphecodes diablotinus sp. nov., S. albifacies sp. nov. and Habralictus antillarus sp. nov. A description and images of the previously unknown female of Microsphecodes dominicanus (Stage, 1972) are provided. In total, eleven species are recognized; eight nest-building species and three kleptoparasites. All halictid species from Dominica are currently known only from the island. A key to halictid bees from Dominica is provided.
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phylogeny of halictine bees supports a shared origin of eusociality for halictus and lasioglossum apoidea anthophila Halictidae
Molecular Phylogenetics and Evolution, 2012Co-Authors: Jason Gibbs, Sean G Brady, Kojun Kanda, Bryan N DanforthAbstract:The halictid bees are excellent models for the study of social evolution because greater social diversity and plasticity are observed in the tribe Halictini than in any other comparable taxonomic group. We examine the evolutionary relationships within the subfamily Halictinae (‘‘sweat bees’’) to investigate the origins of social behaviour within the tribe Halictini. We present a new phylogeny of the subfamily Halictinae based on three nuclear genes (elongation factor-1 alpha, wingless, and long-wavelength rhodopsin) and one mitochondrial gene (cytochrome c oxidase 1) sequenced for 206 halictine bees. We use model-based character reconstruction to infer the probability of a shared eusocial ancestor for the genera Halictus and Lasioglossum, the two genera of Halictini which display eusociality. Our results suggest a high probability for a single origin of eusociality for these two genera, contradicting earlier views of separate origins within each taxon. Fossil-calibrated divergence estimates place this ancestor at approximately 35 million years ago, about 14 million years earlier than previous estimates of eusocial origins in the halictid bees.
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a new species of habralictus moure from dominica lesser antilles hymenoptera Halictidae
ZooKeys, 2012Co-Authors: Jason GibbsAbstract:A new species of Habralictus Moure (Apoidea, Halictidae) is described from the island of Dominica, Habralictus gonzalezi sp. 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.
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New Species in the Lasioglossum petrellum Species Group Identified through an Integrative Taxonomic Approach
The Canadian Entomologist, 2009Co-Authors: Jason GibbsAbstract:Abstract By means of an integrative taxonomic approach using morphology and DNA barcodes, multiple cryptic species within Lasioglossum (Dialictus) petrellum (Cockerell) (Hymenoptera: Halictidae) were discovered. Analysis of DNA barcode sequence data from across the supposed range of L. petrellum revealed distinct genetic differences that correlate with patterns of morphological variation and geographical distribution. The most morphologically distinct pair of species had the smallest DNA-barcode gap. The taxonomic limits of L. petrellum are revised and four new species are described and illustrated: L. (D.) tuolumnense sp. nov., L. (D.) griswoldi sp. nov., L. (D.) droegei sp. nov., and L. (D.) viridipetrellum sp. nov. A key to species of the “L. petrellum” group is provided.
Victor H. Gonzalez - One of the best experts on this subject based on the ideXlab platform.
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revision of the bee genus chlerogella hymenoptera Halictidae part iv a new species from southwestern colombia
Journal of Melittology, 2014Co-Authors: Michael S. Engel, Victor H. Gonzalez, Ismael A HinojosadiazAbstract:A new species of the diverse augochlorine bee genus Chlerogella Michener (Halictinae: Augochlorini) is described and figured from southwestern Colombia. Chlerogella anchicaya Engel, Gonzalez, & Hinojosa-Diaz, new species, is similar to C . agaylei Engel and C . materdonnae Engel, both occurring on the eastern slopes of the Andes in Ecuador. There are also some similarities with C . eumorpha Engel from the western Andean foothills in northern Ecuador, but differences in rostral length and male terminalia can distinguish these species. Revised couplets are provided to the South American species of Chlerogella to permit identification of the new species.
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Bees visiting squash (Cucurbita moschata Duchesne ex Poiret) in southwestern Colombia (Hymenoptera: Apoidea)
Journal of Melittology, 2013Co-Authors: Giselle Zambrano-g, Victor H. Gonzalez, Ismael A. Hinojosa-díaz, Michael S. EngelAbstract:This note records for the first time 12 bee species belonging to eight genera of Apidae and Halictidae as visitors of cultivated squash ( Cucurbita moschata Duchesne ex Poiret: Cucurbitaceae) in the municipality of El Patia, Department of Cauca, southwestern Colombia. Two further bee species are also recorded from a crop visited in the Department of Huila.
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alocanthedon a new subgenus of chalicodoma from southeast asia hymenoptera megachilidae
ZooKeys, 2011Co-Authors: Michael S. Engel, Victor H. GonzalezAbstract:A new subgenus, Alocanthedon Engel and Gonzalez subgen. n., is described for five species of unusual Southeast Asian bees in the genus Chalicodoma Lepeletier de Saint Fargeau (Megachilinae: Megachilini). The subgenus is most noteworthy for the deep postgenal depression or furrow in males (bordered outwardly near the base of the mandible by a protuberant, thick lamella) and the presence of a dense patch of black setae posteriorly in the forewing medial cell (except in one species) [resembling the dense patch of setae among the submarginal cells of Thrinchostoma Saussure (Halictidae: Halictinae: Halictini)]. The subgenus is characterized and distinguished from the related Callomegachile Michener. A key to the following five species presently included in the subgenus is provided: Chalicodoma aterrimum (Smith), Chalicodoma atratiforme (Meade-Waldo) comb. n., Chalicodoma memecylonae Engel sp. n., Chalicodoma odontophorum Engel sp. n., and Chalicodoma apoicola Engel sp. n. Chalicodoma (Callomegachile) atratiforme sininsulae (Cockerell) is newly placed in synonymy with C. (C.) fulvipenne (Smith). Species have been collected from Memecylaceae (Myrtales) and Fabaceae (Fabales). The phylogenetic relationships of Alocanthedon among other Megachilini are briefly elaborated upon.
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the evolution of nocturnal behaviour in sweat bees megalopta genalis and m ecuadoria hymenoptera Halictidae an escape from competitors and enemies
Biological Journal of The Linnean Society, 2004Co-Authors: William T. Wcislo, Victor H. Gonzalez, Laura Arneson, Kari Roesch, Adam R Smith, Hermogenes FernandezAbstract:Evolutionary transitions to dim-light foraging (predawn matinal, crepuscular, nocturnal) have occurred repeatedly in bees, and may be associated with an escape from enemies or competitors. To date, however, little information has been available to test these hypotheses. Here we provide the first detailed information on the nesting behaviour of two species of Neotropical, nocturnal sweat bees, Megalopta genalis and M. ecuadoria (Hymenoptera: Halictidae). Females are facultatively social or solitary, and construct nests in dead wood. Nocturnal foraging behaviour is bimodal. Bees began foraging after sunset (∼18:30 h) and ceased foraging approximately 1 h later even though nocturnal flowers with pollen were still abundant; a second foraging bout occurred in the predawn morning, which began at ∼04:45 h and ended around sunrise (∼06:15 h) when diurnal-blooming flowers were abundant. Bees are capable of controlled flight in full light. They utilized pollen from both canopy and understory plant species, which have diurnal or nocturnal pollen anthesis. Megalopta nests are attacked by generalist predators such as ants, as well as the endoparasitic fly Melaloncha sp. nov. (Phoridae), the beetle Macrosaigon gracilis (Rhipophoridae), the parasitic wasp Lophostigma cincta (Mutillidae), and the brood parasite Megalopta byroni (Halictidae). Overall nest survivorship rates were comparable to those for diurnal relatives, but rates of cell parasitism for Megalopta (< < 5%) were substantially lower than they are for day-flying relatives, offering some support for the hypothesis that the evolution of nocturnal behaviour enables escape from natural enemies. © 2004 The Linnean Society of London, Biological Journal of the Linnean Society, 2004, 83, 377–387.
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the tropical andean bee fauna insecta hymenoptera apoidea with examples from colombia
2004Co-Authors: Victor H. Gonzalez, Michael S. EngelAbstract:Using reports from the literature and data from collections, we provide the first checklist of the tropical Andean bee species found above 2500 m, with a particular emphasis on those in Colombia, where the data are strongest. This listing consists of 65 species in 26 genera from 5 families for Colombia and 90 species in 27 genera for Venezuela, Ecuador, and Peru. For Colombia, the Apidae and Halictidae are the most speciose taxa of those families found at high elevations and contain a similar numbers of species; however, unlike Apidae, Halictidae is not well understood taxonomically and appears to be the most diverse apoid lineage in the tropical Andes. Most bee species occur in cloud forest and only a few in Paramo. Too little data is available for general conclusions on the bee faunas for the remaining countries at this time. We also present an overview of the biogeogra- phy, distribution, and biology of this little-known fauna and suggest future directions for research on these bees.
