• South American Disteniini (Disteniidae, Coleoptera) : new species and new distribution records. (American Museum novitates, no. 3948) 

  Botero, Juan Pablo.; Gutiérrez, Nayeli. (American Museum of Natural History., 2020-03-12)

  Two new species of Disteniini are described: Novantinoe apiculatra from Colombia and Paracometes viridis from Peru (new country record for the genus). An updated key and a geographical distribution map for species of ...
• Hybridization between whiptail lizards in Texas : Aspidoscelis laredoensis and A. gularis, with notes on reproduction of a hybrid. (American Museum novitates, no. 3947) 

  Cole, Charles J.; Dessauer, Herbert C.; Paulissen, Mark A.; Walker, James M. (James Martin) (American Museum of Natural History., 2020-03-06)

  Karyotypes and allozyme data for 32 genetic loci overwhelmingly support the conclusion that Aspidoscelis laredoensis is a diploid all-female species that had a hybrid origin between A. gularis x A. sexlineatus. Comparisons ...
• DNA sequence data from the holotype of Marmosa elegans coquimbensis Tate, 1931 (Mammalia, Didelphidae) resolve its disputed relationships. (American Museum novitates, no. 3946) 

  Giarla, Thomas C.; Voss, Robert S. (American Museum of Natural History., 2020-02-28)

  DNA sequence data obtained from the 96 year old holotype of Marmosa elegans coquimbensis Tate, 1931, support the hypothesis that this nominal taxon is a synonym or subspecies of Thylamys elegans (Waterhouse, 1839) and is ...
• Taxonomy and phylogenetics of Nanometinae and other Australasian orb-weaving spiders (Araneae, Tetragnathidae). (Bulletin of the American Museum of Natural History, no. 438) 

  Alvarez-Padilla, Fernando.; Kallal, Robert J., 1987-; Hormiga, Gustavo. (American Museum of Natural History., 2020-02-28)

  The spider family Tetragnathidae Menge is a cosmopolitan, relatively well-studied spider clade with some members readily identifiable by their elongate chelicerae and/or their horizontal orb webs. It has four recognized ...
• Supplemental Material for 'Two new deep-sea species of burrowing anemones (Cnidaria, Actiniaria, Edwardsiidae) from Whittard Canyon off the southwestern coast of Ireland. (American Museum novitates, no. 3945)' 

  Gusmão, Luciana Câmara, 1981-; Qu, Cherie; Burke, Sadie L.; Rodríguez, Estefania (2020-02)

  Supplemental Material for 'Two new deep-sea species of burrowing anemones (Cnidaria, Actiniaria, Edwardsiidae) from Whittard Canyon off the southwestern coast of Ireland. (American Museum novitates, no. 3945)'
• Two new deep-sea species of burrowing anemones (Cnidaria, Actiniaria, Edwardsiidae) from Whittard Canyon off the southwestern coast of Ireland. (American Museum novitates, no. 3945) 

  Gusmão, Luciana Câmara, 1981-; Qu, Cherie.; Burke, Sadie L.; Rodríguez, Estefania. (American Museum of Natural History., 2020-02-12)

  Burrowing sea anemones have a simple morphology with an elongate body and a round aboral end that anchors the animal into mud, sand, or gravel, leaving only the tentacle crown exposed. Edwardsiids are easily differentiated ...
• The guardstone spiders of the Phrurotimpus palustris group (Araneae, Phrurolithidae). (American Museum novitates, no. 3944) 

  Platnick, Norman I. (American Museum of Natural History., 2019-12-09)

  The type species of Phrurotimpus, Herpyllus alarius Hentz, was based on a female from Alabama; because Hentz's type specimens were destroyed long ago, the identity of this species has been controversial for over a century. ...
• Supplemental Material for 'Reassessment of a historical collection of sauropod dinosaurs from the northern Morrison Formation of Wyoming, with implications for sauropod biogeography. (Bulletin of the American Museum of Natural History, no. 437)' 

  Tschopp, Emanuel; Maidment, Susannah C.R.; Lamanna, Matthew C.; Norell, Mark A. (2019-11)

  Supplemental Material for 'Reassessment of a historical collection of sauropod dinosaurs from the northern Morrison Formation of Wyoming, with implications for sauropod biogeography. (Bulletin of the American Museum of ...
• Reassessment of a historical collection of sauropod dinosaurs from the northern Morrison Formation of Wyoming, with implications for sauropod biogeography. (Bulletin of the American Museum of Natural History, no. 437) 

  Tschopp, Emanuel.; Maidment, Susannah C. R.; Lamanna, Matt.; Norell, Mark. (American Museum of Natural History., 2019-11-04)

  The Upper Jurassic Morrison Formation of the western United States preserves one of the best-known Mesozoic paleoecosystems worldwide. The formation crops out over an area from New Mexico and Oklahoma to Montana and Utah ...
• The first Tertiary fossils of mammals, turtles, and fish from Canada's Yukon. (American Museum novitates, no. 3943) 

  Eberle, Jaelyn.; Hutchison, J. Howard (John Howard), 1939-; Kennedy, Kristen.; Koenigswald, Wighart von.; MacPhee, R. D. E.; Zazula, Grant D. (American Museum of Natural History., 2019-10-31)

  Despite over a century of prospecting and field research, fossil vertebrates are exceedingly rare in Paleogene and Neogene rocks in northern Canada's Yukon Territory. Here, we describe the first records of probable Neogene ...
• Nest architecture, immature stages, and ethnoentomology of a new species of Trigonisca from northern Colombia (Hymenoptera, Apidae). (American Museum novitates, no. 3942) 

  Engel, Michael S.; Rozen, Jerome G., Jr. (Jerome George), 1928-; Sepúlveda-Cano, Paula A.; Smith, Corey Shepard.; Thomas, Jennifer C.; Ospina Torres, Rodulfo.; González, Víctor H. (American Museum of Natural History., 2019-10-18)

  Stingless bees (Apinae: Corbiculata: Meliponini) are biologically and culturally important pollinators within the tropical and subtropical areas of the world. However, limited information is available for the majority of ...
• An unexpected new Poropanchax (Cyprinodontiformes, Procatopodidae) from the Kongo Central Province, Democratic Republic of Congo. (American Museum novitates, no. 3941) 

  Van der Zee, Jouke R.; Bernotas, Kimberly.; Bragança, Pedro H. N.; Stiassny, Melanie L. J. (American Museum of Natural History., 2019-10-10)

  A new procatopodid, assigned to the genus Poropanchax, is described from a wetland habitat located adjacent to the Inga Falls in Lower Congo. Poropanchax pepo, new species, is distinguished from all congeners by a combination ...
• Egg and mature larva of a species of Plebeia with a preliminary overview of the mature larvae of the Meliponini relative to those of other corbiculate taxa (Apoidea, Apidae). (American Museum novitates, no. 3940) 

  Rozen, Jerome G., Jr. (Jerome George), 1928-; Smith, Corey Shepard.; Roubik, David W. (David Ward), 1951- (American Museum of Natural History., 2019-09-27)

  The egg and mature larva of a presently unnamed species of the bee genus Plebeia are anatomically described, illustrated, and compared with those of other known Meliponini, based on abundant specimens collected from two ...
• Larval anatomy of the bee Tetragonula sapiens (Cockerell) (Meliponini) ; Further on the larva of Melipona fallax Camargo and Pedro, with a preliminary characterization of mature larval Meliponini ; and Analysis of multipronged spicules (Apoidea, Apidae). (American Museum novitates, no. 3939) 

  Rozen, Jerome G., Jr. (Jerome George), 1928-; Smith, Corey Shepard.; Archbold Expedition to New Guinea (7th : 1964) (American Museum of Natural History., 2019-09-27)

  The small (length less than 6 mm) postdefecating larva of Tetragonula (Tetragonula) sapiens (Cockerell) from the Huon Peninsula, Papua New Guinea is described and illustrated, the first representation of the immature stage ...
• New species of Cerambycinae and Lamiinae (Cerambycidae, Coleoptera) from Mexico. (American Museum novitates, no. 3938) 

  Noguera, Felipe A. (Felipe Arturo); Gutiérrez, Nayeli. (American Museum of Natural History., 2019-09-20)

  Four new species of longhorn beetles (Cerambycidae, Coleoptera) from Mexico are described herein. Three are in the subfamily Cerambycinae: Aphysotes santossilvai, sp. nov., from Veracruz (new country record for the genus), ...
• Supplemental Material for 'A trilobite cluster from the Silurian Rochester Shale of New York : predation patterns and possible defensive behavior. (American Museum novitates, no. 3937)' 

  Bicknell, Russell D C; Paterson, John R; Hopkins, Melanie J (2019-09-09)

  Supplemental Material for 'A trilobite cluster from the Silurian Rochester Shale of New York : predation patterns and possible defensive behavior. (American Museum novitates, no. 3937)'
• A trilobite cluster from the Silurian Rochester Shale of New York : predation patterns and possible defensive behavior. (American Museum novitates, no. 3937) 

  Bicknell, Russell D. C.; Paterson, John R.; Hopkins, Melanie J. (American Museum of Natural History., 2019-09-09)

  Evidence of predator-prey interactions in the fossil record offers important insights into extinct ecosystems. As direct predator-prey relationships are rarely preserved, records of failed predation upon prey species are ...
• Karyotypes of the North American parthenogenetic whiptail lizard Aspidoscelis velox, and return of Aspidoscelis innotatus to the synonymy of A. velox (Reptilia, Squamata, Teiidae). (American Museum novitates, no. 3936) 

  Cole, Charles J.; Cordes, James E.; Walker, James M. (James Martin) (American Museum of Natural History., 2019-08-30)

  Aspidoscelis velox is a triploid parthenogenetic species with clonal inheritance. We studied karyotypes of population samples representing diverse localities from much of its range. All specimens were triploids, but six ...
• First species of Inbiomyia from the Atlantic Forest of Brazil (Diptera, Inbiomyiidae). (American Museum novitates, no. 3935) 

  Riccardi, Paula Raile.; Amorim, Dalton de Souza. (American Museum of Natural History., 2019-08-12)

  We describe and illustrate Inbiomyia azevedoi, sp. nov., the first species of Inbiomyiidae known from the Atlantic Forest in southeastern Brazil. SEM photos show that the bifurcated labella have on their ventral face rows ...
• New fossil birds from the earliest Eocene of Mongolia. (American Museum novitates, no. 3934) 

  Hood, Sarah C.; Torres, Chris R.; Norell, Mark.; Clarke, Julia A.; Mongolian-American Museum Paleontological Project. (American Museum of Natural History., 2019-08-09)

  Understanding of the Asian early Paleogene avifauna is limited relative to that of North American and European avifauna of the same period. While major patterns of mammalian faunal exchange among these three regions across ...

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