Anthony I Cognato

Anthony I Cognato
Michigan State University | MSU · Department of Entomology

Doctor of Philosophy

About

318
Publications
54,241
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3,628
Citations
Additional affiliations
June 2006 - present
Michigan State University
Position
  • Professor (Associate)
July 2000 - June 2006
Texas A&M University
Position
  • Professor (Assistant)

Publications

Publications (318)
Article
Sesiids are a diverse group of predominantly diurnal moths, many of which are Batesian mimics of Hymenoptera. However, their diversity and relationships are poorly understood. A multi‐gene phylogenetic analysis of 48 North American sesiid species confirmed the traditional taxonomic tribal ranks, demonstrated the paraphyly of Carmenta and Synanthedo...
Article
Pseudocryptic species, those that are difficult to diagnose using traditional taxonomic methods, are serious impediments for recognizing the introduction of non-native species. Rapid identification of species facilitates a rapid response to newly introduced species which can lessen their damaging effects. This situation is acute for known pest spec...
Article
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BULLETIN OF AMERICAN ODONATOLOGY In June 2021, two female Somatochlora hineana (Hine's Emerald) were collected in Oceana County, Michigan, a location > 100 km from the nearest known populations. This is a region apparently lacking sizable areas of characteristic S. hineana habitat: fens or similar calcareous wetlands with shallow soils over dolomit...
Article
In the tropics, antagonistic seed predation networks may have different properties than mutualistic pollination and seed dispersal networks, but the former have been considerably less studied. We tested whether the structure of antagonistic tripartite networks composed of host plants, insects developing within seeds and fruits, and their insect par...
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The Neotropical xyleborine ambrosia beetle genus Coptoborus Hopkins is reviewed. The following 40 Coptoborus species are described: C. amplissimus sp. nov. (Peru), C. asperatus sp. nov. (Ecuador), C. barbicauda sp. nov. (French Guiana), C. bettysmithae sp. nov. (Ecuador), C. brevicauda sp. nov. (Ecuador), C. brigman sp. nov. (Ecuador), C. busoror s...
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Canopy fogging was used to sample the diversity of bark and ambrosia beetles (Coleoptera, Curculionidae, Scolytinae) at two western Amazonian rainforest sites in Ecuador. Sampling was conducted by Dr Terry Erwin and assistants from 1994–2006 and yielded 1158 samples containing 2500 scolytine specimens representing more than 400 morphospecies. Here,...
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The Neotropical xyleborine ambrosia beetle genus Coptoborus Hopkins is reviewed. The following 40 Coptoborus species are described: C. amplissimus sp. nov. (Peru), C. asperatus sp. nov. (Ecuador), C. barbicauda sp. nov. (French Guiana), C. bettysmithae sp. nov. (Ecuador), C. brevicauda sp. nov. (Ecuador), C. brigman sp. nov. (Ecuador), C. busoror s...
Article
The influence of plants in the diversification of herbivorous insects, specifically those that utilize moribund and dead hosts, is little explored. Host shifts are expected because the effectiveness of toxic secondary chemicals is lessened by decay of dead plants. Feeding on dead plants also releases herbivorous insect lineages from diversifying wi...
Conference Paper
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Bees are the most important pollinators in both managed and natural ecosystems, and yet concerns about bee declines are growing. Unfortunately, only a fraction of the 20,000 known bee species has adequate data to assess the status of species and susceptibility of populations to decline. The iDigBees Thematic Collections Network (TCN), comprised of...
Article
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The Southeast Asian xyleborine ambrosia beetle fauna is reviewed for the first time. Thirty-four genera and 315 species are reviewed, illustrated, and keyed to genera and species. Sixty-three new species are described: Amasa cycloxyster sp. nov., Amasa galeoderma sp. nov., Amasa gibbosa sp. nov., Amasa lini sp. nov., Amasa tropidacron sp. nov., Ama...
Article
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The Southeast Asian xyleborine ambrosia beetle fauna is reviewed for the first time. Thirty-four genera and 315 species are reviewed, illustrated, and keyed to genera and species. Sixty-three new species are described: Amasa cycloxyster sp. nov. , Amasa galeoderma sp. nov. , Amasa gibbosa sp. nov. , Amasa lini sp. nov. , Amasa tropidacron sp. nov....
Article
Acanthotomicus diaboliculus Cognato and Smith, new species and Acanthotomicus enzoi Cognato and Smith, new species are described from Yunnan, China and central Thailand. The pattern of elytral declivital spines distinguishes these species from each other and from Acanthotomicus spinosus (Blandford). These new species increase the described diversit...
Article
Immanus virago Wang, Smith and Cognato, new species, is described from Borneo (Sabah). It is distinguished from the morphologically similar species I. sarawakensis (Eggers) by the absence of large granules on the elytral declivity. This additional species increases the known diversity of Immanus Hulcr and Cognato species to nine. A recent key to sp...
Article
Cryphalini Lindemann, 1877 are a speciose group of mostly miniscule beetles. The tribe Cryphalini is reviewed here which resulted in taxonomic and nomenclatural changes. This revision follows a recent molecular phylogenomic re-analysis focused on the tribe and related scolytine taxa. The analysis demonstrated that the tribe is polyphyletic, as foun...
Article
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DNA holds great potential for species identification and efforts to create a DNA database of all animals and plants currently contains >7.5 million sequences representing ~300,000 species. This promise of a universally applicable identification tool suggests that morphologically based tools and taxonomists will soon not have utility. Here we demons...
Article
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A catalogue of the fauna of Korean Xyleborine species is provided with information on the Korean records, local and world distribution and taxonomy. The following seven new species and 11 newly recorded species are added to the Korean fauna: Cyclorhipidion laciniosum Park & Smith sp. nov., Cyclorhipidion tristis Park & Smith sp. nov., Microperus mo...
Article
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As part of an ongoing revision of the Southeast Asian fauna two distinct species groups were identified and hypothesized as new genera. These species groups were monophyletic as evidenced by a Bayesian analysis of DNA sequences from four genes for 181 xyleborine taxa augmented by 18 species newly included in this phylogenetic analysis. The species...
Article
Coptoborus ochromactonus (Smith and Cognato) is one of the most common and important pests of balsa, Ochroma pyramidale (Cav. Ex Lam. Urb.), an economic pillar of the wood industry in Ecuador. Commercial balsa plantations have been expanded from humid to dry climate areas to limit insect damage, but basic knowledge is still lacking on the interacti...
Article
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The top‐down and indirect effects of insects on plant communities depend on patterns of host use, which are often poorly documented, particularly in species‐rich tropical forests. At Barro Colorado Island, Panama, we compiled the first food web quantifying trophic interactions between the majority of co‐occurring woody plant species and their inter...
Article
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Ambrosia beetles of the Euwallacea fornicatus (Eichhoff, 1868) species complex are emerging tree pests, responsible for significant damage to orchards and ecosystems around the world. The species complex comprises seven described species, all of which are nearly identical. Given that the morphology-defined species boundaries have been ambiguous, hi...
Article
The Scolytinae is highly diversified in tropical forests, but richness and abundance patterns within most Ecuadorian forest habitat types are not yet characterized. In this study, we assessed patterns of variation in Scolytinae richness, abundance, and species composition in a primary and a secondary natural forest, and a commercial balsa plantatio...
Article
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The results of ten years of a USFS Service program to detect exotic bark and ambrosia beetles (Coleoptera: Scolytinae) in the United States.
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X‐ray microtomography has been applied successfully to obtain reliable microstructural information of many insect species. Nonetheless, the technique has not been widely applied to ambrosia beetles. The ambrosia beetle Euwallacea interjectus (Blandford) was first recorded as a vector of plant pathogenic fungus Ceratocystis ficicola Kajitani & Masuy...
Article
Southern pine beetle, Dendroctonus frontalis Zimmermann, is a major native pest of pine trees in the southeastern United States, Mexico, and Central America. The species’ range has recently expanded north for the first time in recorded history. Accordingly, information about the timing of population divergence and past geographic range occupancy ma...
Article
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The redbay ambrosia beetle, Xyleborus glabratus Eichhoff, is native to Southeast Asia, where it specializes on Lauraceae trees. It forms a symbiosis with the ambrosia fungus Raffaelea lauricola T.C. Harr., Fraedrich & Aghayeva, which can act as a pathogen in living host trees. The beetle and fungus were recently introduced into the United States, w...
Article
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Coptoborus ochromactonus Smith and Cognato is a recently described xyleborine ambrosia beetle pest associated with balsa, Ochroma pyramidale (Cav. Ex Lam.) Urb., in Ecuador. This pest has caused significant loss of cultivated balsa in Ecuador, but little is known of its biology and ecology. Based on examination of multiple gallery systems, this stu...
Article
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The following 13 new combinations are given: originally described in Xyleborus Eichhoff, 1864. The following 24 new synonyms are proposed: Ambro-siophilus atratus (Eichhoff, 1876) (=Xyleborus collis Niisima, 1910 syn. n.); Ambrosiophilus osumiensis (Murayama, 1934) (=Xyleborus metanepotulus Eggers, 1939 syn. n.); Ancipitis machili (Niisima, 1910) (...
Article
Tropical forests account for 7% of the earth's surface harboring more than 50% of the biodiversity on Earth. Unfortunately, deforestation continues at high rates with negative consequences for biodiversity. With the decrease of natural habitats, biodiversity maintenance in areas degraded by human activity is a challenge. In order to maintain biodiv...
Article
A new species of bark beetle, Acanthotomicus suncei Cognato, that kills sweetgum (Liquidambar spp.) is described. The new species is distinguished from the other Acanthotomicus species by the placement of elytral declivital spines on interstriae 2, 4, 6, 8 and the connection of spines 1 and 2 by a tumescence. Notes on the bark beetle’s potential da...
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The Editor-in-Chief and the Subject Editors of the Journal of Economic Entomology thank the following scientists for their voluntary commitment of valuable professional time and expertise to peer reviewing manuscripts submitted for publication in our journal. The quality and scientific stature of the journal depends on the conscientious efforts of...
Article
Xyleborine ambrosia beetles began their dispersal from Asia to the New World soon after their origin approximately 23 Ma. Tolerance for extreme inbreeding and fungus farming have made them successful colonizers. These ancient globetrotters have radiated throughout the tropics, including the Hawaiian archipelago. Twenty-one endemic Xyleborus Eichhof...
Article
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Aim Insects feeding on seeds and fruits represent interesting study systems, potentially able to lower the fitness of their host plants. In addition to true seed eaters, a suite of insects feed on the fleshy parts of fruits. We examined the likelihood of community convergence in whole insect assemblages attacking seeds/fruits in three tropical rain...
Article
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Xyleborini currently consists of more than 1168 species in 36 genera, nearly all of which were described in Xyleborus (Hulcr et al. 2015; Smith 2017). The tribe has been the focus of considerable taxonomic attention over the last decade resulting in phylogenetically based revisions and the erection of new genera (e.g. Hulcr et al. 2007, Hulcr and C...
Article
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Land use changes and forest fragmentation result in biodiversity loss and displacement, with insects among the most affected groups. Among these, bark beetles (Curculionidae: Scolytinae) occupy a prominent position due to their close ties to food resources, i.e., trees, and importance as primary decomposers in forest ecosystems. Therefore, our stud...
Article
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A preliminary phylogeny of 36 species of Carmenta (Lepidoptera: Sesiidae) was reconstructed based on mitochondrial cytochrome oxidase I DNA sequences using parsimony and Bayesian inference in order to assess the placement of a suspected new species. Although the phylogeny was not completely resolved, there were well-supported species groups associa...
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The first platypodine beetle from Baltic amber, Eoplatytpus jordali gen.n. et sp.n., is described from two specimens. The species shares diagnostic characters with Tesserocerini and a phylogeny reconstructed with morphological and DNA data groups the species with Mitosoma, Cenocephalus, and Chaetastus. The species lacks mesepisternal and mesonotal...
Article
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Camptocerus lucwildi Smith and Cognato, new species is described from montane forests of the western slope of the Andes in Los Ríos Province, Ecuador. The species is similar in morphology to Camptocerus quadridens Blackman, except that the male has one acute spine on the base of each elytron. This species represents one of the few species of Campto...
Article
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Laurel wilt is an extraordinarily destructive exotic tree disease in the southeastern United States that involves new-encounter hosts in the Lauraceae, an introduced vector (Xyleborus glabratus) and pathogen symbiont (Raffaelea lauricola). USDA Forest Service Forest Inventory and Analysis data were used to estimate that over 300 million trees of re...
Article
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A previously unknown bark beetle species, Acanthotomicus sp., has emerged as a lethal pest of American sweetgum (Liquidambar styraciflua) in China. Our survey of nursery records from around Shanghai suggests that American sweetgum have been under heavy attack since at least 2013, resulting in the death of > 10,000 trees. Mass attacks of the apparen...
Article
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The Lepidoptera of North America Network, or LepNet, is a digitization effort recently launched to mobilize biodiversity data from 3 million specimens of butterflies and moths in United States natural history collections (http://www.lep-net.org/). LepNet was initially conceived as a North American effort but the project seeks collaborations with mu...
Article
The study of species diversification can identify the processes that shape patterns of species richness across the tree of life. Here we perform comparative analyses of species diversification using a large dataset of bark beetles. Three examined covariates – permanent inbreeding (sibling mating), fungus farming, and major host type – represent a r...
Article
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The bark and ambrosia beetle fauna (Scolytinae) of Peru is reviewed. Examination of ∼8,000 museum and recently collected specimens and a literature review yielded 106 new country records among 248 species distributed among 56 genera and 15 tribes. Our findings for Peru increase the reported species diversity by ∼75%. Despite this thorough review, a...
Article
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Twenty-three Aphaenogaster species (Hymenoptera: Formicidae) occur in North America. While morphology and ecology define most species, the species limits of a group in the Eastern United States are unclear. In particular, the morphological and behavioural characters of A. carolinensis, A. picea and A. rudis overlap. These observations suggest that...
Article
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Collection of specimens of the Neotropical weevil genus Coptonotus Chapuis in Ecuador led to the discovery that Coptonotus cyclopus Chapuis, 1869 was comprised of multiple species. Parsimony analysis of morphological and molecular characters produced a well-supported phylogeny of seven Coptonotus specimens, which contained morphologically diagnosab...
Article
Albuna beutenmulleri Skinner (Lepidoptera: Sesiidae) is endemic to eastern and southern Utah, feeds on primrose (Oenothera pallida Lindl.), and is distinctly colored with opaque, orange-red wings. However, A. beutenmulleri was synonymized as a color variant of the widely distributed A. pyramidalis (Walker). Thus, given the criteria of monophyly, we...
Article
Asian Euwallacea ambrosia beetles vector Fusarium mutualists. The ambrosial fusaria are all members of the Ambrosia Fusarium Clade (AFC) within the Fusarium solani species complex (FSSC). Several Euwallacea-Fusarium mutualists have been introduced into non-native regions and have caused varying degrees of damage to orchard, landscape and forest tre...
Chapter
Ips bark beetles (Curculionidae: Scolytinae) occur in conifer forests of North America (23 species) and Eurasia (14 species). Larvae and adults feed under the bark of pine or spruce and are less common in fir, cedar, and larch. Most beetles are decomposers of dead and dying trees but some species will kill healthy trees. As males bore into the tree...
Article
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Indocryphalus suongmu sp. n. was described from northern Vietnam. A cladistic analysis of all nine species based on 22 morphological characters found I. suongmu and I. machili Wood as sister species. Species relationships, character evolution and patterns of ecology/geography were discussed in context of the cladogram. A modification of Beaver's (2...
Chapter
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This chapter summarizes the historical and contemporary taxonomy, phylogenetic relationships, morphological and molecular approaches, and information resources used in the classification of bark and ambrosia beetles (Coleoptera: Curculionidae: Scolytinae). The chapter pays special attention to the description of methods, including details on morpho...
Article
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A new species of exotic ambrosia beetle, Ambrosiophilus peregrinus Smith and Cognato, likely native to Asia, is described after its establishment in the United States. This species was first detected in Cherokee County, Georgia in June 2013. Since its initial discovery, the species has been found in two neighboring counties in northern Georgia. A k...
Article
Dryocoetes krivolutzkajae Mandelshtam (Coleoptera: Curculionidae), a scolytine bark beetle previously known only from the Kamchatka Peninsula, Russia was discovered in Labrador and New Brunswick, Canada. It is unknown whether the Canadian populations represent an introduction or the natural range of D. krivolutzkajae. The habit of this beetle is pa...
Article
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Exotic insects are constantly intercepted at U.S. ports-of-entry. Of these, wood-boring beetles, particularly xyleborine ambrosia beetles, are sometimes missed during port inspections and become established in the United States. Euwallacea validus (Eichhoff) and Euwallacea interjectus (Bland-ford) are morphologically similar Asian ambrosia beetle s...
Article
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The ant genus Aphaenogaster Mayr is an ecologically diverse group that is common throughout much of North America. Aphaenogaster has a complicated taxonomic history due to variability of taxonomic characters. Novomessor Emery was previously synonymized with Aphaenogaster, which was justified by the partial mesonotal suture observed in Aphaenogaster...
Article
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The Khapra beetle, Trogoderma granarium Everts, is a global pest species of stored grain products. Accurate identification of Trogoderma specimens trapped within stores of grain is critical to surveillance and exclusion efforts for the Khapra beetle. To enhance diagnostic capacity, we report PCR-based diagnostic assays for Khapra beetle identificat...
Conference Paper
Full-text available
Twenty-two Aphaenogaster species (Hymenoptera: Formicidae) occur in North America. While morphology and ecology define most species, the species limits of a group in the Eastern United States are unclear. In particular, the morphological and behavioral characters once thought to define A. carolinensis, A. picea and A. rudis do not associate with th...