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Three groups of beetles inhabit cones of cycads (Cycadales) in the northern hemisphere and are believed to be involved in their pollination. The primitive weevil subtribe Allocorynina (Coleoptera: Belidae) is restricted to the New World cycad genera Dioon Lindl. and Zamia L. One group of weevils (Curculionidae), found only in Cycas L., appears to be a relatively recent colonizer of northern hemisphere cycads. Members of the beetle subfamily Pharaxonothinae (Erotylidae) occur in all Asian and New World cycad genera. Phylogenetic trees of these beetles, based on DNA analysis and supported with morphological studies, are compared to patterns of continental drift and cycad phylogenies. Laurasian origins are suggested for these beetle groups with high latitude dispersal for at least one of these groups during periods of global warm climates.
Two species of the early-diverging lineages of Pharaxonotha Reitter (Coleoptera: Erotylidae: Pharaxonothinae) are described: Pharaxonotha taylori Skelley and Tang, new species, and Pharaxonotha thomasi Skelley and Tang, new species. A new key to described species of Pharaxonotha, based on previously unused characters, is presented.
Antoinettia, new genus (Coleoptera: Erotylidae: Erotylinae: Tritomini), is erected for three species: A. audbala (Skelley), new combination, A. huhnei Skelley, new species, and A. kovariki (Skelley), new combination. A genus complex involving Ischyrus Lacordaire, 1842, and Megischyrus Crotch, 1873, is defined and a preliminary key to neotropical genera of Tritomini with coarsely facetted eyes is presented.
The beetle genus Pharaxonotha Reitter (Coleoptera: Erotylidae: Pharaxonothinae) is found in the cones of cycad genera in the New World, including species of Dioon Lindl., Ceratozamia Brongn., Microcycas (Miq.) A.DC and Zamia L. In this paper nine new species found in Dioon are described by Skelley, Tang and Pérez-Farrera: Pharaxonotha bicolor, P. dimorpha, P. fawcettae, P. gigantea, P. novoai, P. occidentalis, P. sclerotiza, P. woodruffi, P. vovidesi. A key to described species of Pharaxonotha inhabiting Dioon is presented, along with an account of Pharaxonotha kirschii Reitter for comparison.
An unusual eye malformation observed in Trichiotinus rufobrunneus (Casey) (Coleoptera: Scarabaeidae: Cetoniinae: Trichiini), is described and illustrated. The functionality of the ectopic compound eye is discussed. According to label data, larval association with oak rotten log habitats is reported.
A new species of Termitodius Wasmann (Coleoptera: Scarabaeidae: Aphodiinae: Rhyparini) is described from Colombia, Termitodius woodruffi Skelley, Clavijo-Bustos, and Keller, new species. This species is both extant and abundantly preserved in copal. The genus Termitodius is reviewed with a key and brief accounts to all species.
Several taxonomic and nomenclatural issues are reviewed, clarified, and resolved for multiple genera of the Erotylinae (Coleoptera: Erotylidae). Generic-group names discussed: Brachymerus Dejean, 1836, Cypherotylus Crotch, 1873, Cytorea Laporte, 1840, Erotylus Fabricius, 1775, Eudaemonius Lewis, 1887, Eutriplax Lewis,1887, Gibbifer Voet, 1806, Neobarytopus Alvarenga, 1965, Neomorphoides Alvarenga, 1977, Ogcotriplax Heller,1920, Paratritoma Gorham, 1888, Platichna Thomson, 1863, Pseudochrysomela Voet, 1806, Pseudotriplax Heller,1920, Triplax Herbst, 1793, Tritomapara Alvarenga, 1970, Typocephalus Hope,1841, and Xestus Wollaston, 1864. Reviewing these issues resulted in a several nomenclatural actions. Eutriplax Lewis,1887,was found to be an unnecessary replacement name for Eudaemonius Lewis,1887.The genus name is reverted to Eudaemonius,
resulting in one new combination: Eudaemonius quinquepustulatus (Li and Ren, 2006).
The Neotropical Tritomapara Alvarenga,1970,was found to be a new objective synonym of Paratritoma Gorham,1888, which is a synonym of Triplax Herbst,1793,leading to the following eight new combinations:
Triplax atricaudata (Kuhnt,1910),Triplax brasiliensis (Guérin,1946),Triplax bruchi (Kuhnt,1910),Triplax caduca (Gorham,1888),Triplax dimidiata (Gorham,1888),Triplax melanoderes (Kuhnt,1910),Triplax triplacoides
(Crotch,1876), and Triplax vivida (Gorham,1888). Erotylus tibialis Duponchel, 1825, is recognized as the valid type species for Brachymerus Dejean 1836, which moves the name Brachymerus to a different genus-group taxon and renders Neomorphoides Alvarenga, 1977, a new synonym. This revalidates Neobarytopus Alvarenga, 1965, as originally proposed. These genus-group names are presently subgenera in Iphiclus Dejean, 1836, and the move creates 23 new combinations in Iphiclus(Brachymerus) Dejean, 1836: I. (B.) amazonus (Crotch, 1876), I. (B.) atriventris (Mader,1943), I. (B.) bicolor(Lacordaire,1842), I. (B.) clavicornis (Olivier,1792), I. (B.) columbiae (Crotch,1876), I. (B.) costaricensis (Mader,1943), I. (B.) disconigrum (Mader,1942), I. (B.) dorsonotatus (Lacordaire, 1842), I. (B.) fulviventris (Gorham,1888), I. (B.) humeropictus (Mader,1943), I. (B.) lateripunctatus (Crotch,1876), I. (B.) melanopus (Gorham,1888), I. (B.) neglectus (Guérin,1956), I. (B.) nigritarsis (Mader,1942), I. (B.) nigriventris (Crotch, 1876), I. (B.) nigropectus (Mader,1942), I. (B.) posticenigrum (Mader,1942), I. (B.) pyrrhocephalus (Erichson,1847), I. (B.) rubripennis (Lacordaire,1842), I. (B.) signaticollis (Kuhnt,1910), I. (B.) simplex (Lacordaire,1842), I. (B.) spilotus (Gorham,1888), I. (B.) tibialis (Duponchel,1825); and, 75 new combinations in Iphiclus (Neobarytopus) Alvarenga, 1965: I. (N.) adustus (Duponchel,1825), I. (N.) alboniger (Guérin,1956), I. (N.) amictus (Erichson,1847), I. (N.) andicola (Kirsch,1867), I. (N.) assequens (Mader,1942), I. (N.) bajulus (Lacordaire,1842), I. (N.) batesi (Gorham, 1889),I. (N.) bellulus (Lacordaire,1842), I. (N.) bicinctus (Olivier,1807), I. (N.) bistrifoliatus (Gorham,1889), I. (N.) bizonatus (Crotch,1876), I. (N.) bremei (Guérin-Méneville,1841), I. (N.) brongniarti (Lacordaire,1842), I. (N.) brunneostriolatus (Kuhnt, 1910), I. (N.) cerasinus (Lacordaire,1842), I. (N.) conformis (Lacordaire,1842), I. (N.)distinctus (Duponchel, 1825), I. (N.) divisus (Guérin,1956), I. (N.) dorsalis (Olivier,1792), I. (N.) eburneus (Crotch,1876), I. (N.) elegans (Mader,1942), I. (N.) epipleuralis (Crotch,1876), I. (N.) erichsoni (Lacordaire,1842), I. (N.) flavofasciatus (Duponchel,1825), I. (N.) flavosignatus (Duponchel,1825), I. (N.) fragmentatus (Gorham,1888), I.(N.) friedei (Mader,1938), I. (N.) geometra (Lacordaire,1842), I. (N.) hebriacus (Lacordaire,1842), I. (N.) hexastictus (Crotch,1876), I. (N.) incas (Gorham,1889), I. (N.) iris (Guérin,1956), I. (N.) jacinthoi (Alvarenga,1977), I.(N.) laceratus (Mader,1938), I. (N.) lugens (Lacordaire,1842), I. (N.) lunaris (Guérin,1956), I. (N.) luteozonatus (Crotch, 1876), I. (N.) miles (Mader,1942), I. (N.) mirus (Mader,1942), I. (N.) musicalis (Lacordaire,1842), I. (N.) neophyta (Lacordaire, 1842), I. (N.) nigripennis (Demay,1838), I. (N.) nigropictus (Lacordaire,1842), I. (N.) nigrofasciatus (Mader,1942), I. (N.) nitidulus (Oliver,1807), I. (N.) obsoletesignatus (Crotch, 1876), I. (N.) octoguttatus (Olivier,1807), I. (N.) octopustulatus (Guérin,1956), I. (N.) odyneroides (Crotch, 1876), I. (N.) ornatus (Kuhnt,1909), I. (N.) pantherinus (Kuhnt, 1909), I. (N.) pauper (Guérin,1956), I. (N.) peraffinis (Crotch,1876), I. (N.) perplexus (Mader,1942), I. (N.) peruvianus (Mader,1942), I. (N.) planipennis (Kuhnt,1909), I. (N.) puncticollis (Kirsch,1876), I. (N.) quadrifasciatus (Kirsch,1865), I. (N.) quinquefasciatus (Lacordaire,1842), I. (N.) ramosus (Olivier,1807), I. (N.) regularis (Erichson, 1848), I. (N.) rhomboidalis (Guérin,1956), I. (N.) rufipennis (Panzer,1798), I. (N.) salamandra (Erichson,1847), I. (N.) spectabilis (Lacordaire,1842), I. (N.) stramineus (Lacordaire,1842), I. (N.) subsanguineus (Crotch,1876), I. (N.) superbus (Mader,1942), I. (N.) tigrinatus (Guérin,1956), I. (N.) tricinctus (Duponchel,1825), I. (N.) trifasciatus (Olivier,1807), I. (N.) tripartitus (Lacordaire,1842), I. (N.) ucayalensis (Gorham,1889), I. (N.) venezuelae (Crotch, 1876), I. (N.) westwoodi (Guérin-Méneville,1841).
The works of Voet (1766–1778,1806) do not follow binominal nomenclature and are therefore unavailable by the International Code of Zoological Nomenclature, Article 11.4.Thus, Voet’s (1806) generic names “Pseudochrysomela” and “Gibbifer”, and the species names proposed in each, are unavailable. Removing them from nomenclatural considerations resulted in the following nomenclatural acts: the resurrection of Erotylus rufipennis Panzer,1798, now Iphiclus (Neobarytopus) rufipennis (Panzer) new combination; the proposal of a new name, Iphiclus (Brachymerus) fabricii Skelley for Erotylus rufipennis Fabricius, 1801, not Erotylus rufipennis Panzer, 1798; new combinations for the two species, Cypherotylus adrianae (Alvarenga, 1976) and Cypherotylus borgmeieri (Alvarenga, 1976); and revalidated status for the five species names, Erotylus variegatus Fabricius,
1781, Barytopus gronovii (Herbst, 1783), Prepopharus notatus (Olivier, 1792), Iphiclus (Iphiclus) sedecimguttatus (Olivier, 1792), and Cypherotylus duponcheli Arrow, 1937.
Glaresis franki Keller and Skelley new species and Glaresis thomasi Keller and Skelley new species (Coleoptera: Scarabaeoidea: Glaresidae) are described and illustrated. They represent the first record of the family for the West Indies. Both species are placed into the phoenicis species group. A key to the two West Indies species is presented.
We honor the life and accomplishments of Michael C. Thomas with a short narrative of his professional life along with appendices listing his scientific artwork, bibliography and patronyms. This paper is the first of a Festschrift with contributed remembrances and separate papers honoring him with additional patronyms.
New insights into the genus Stenotothorax Schmidt (Coleoptera: Scarabaeidae: Aphodiinae: Aphodiini) allowed for an influx of new materials from many new localities, and the realization that the genus needs revision. In this work, newly discovered characters used to distinguish species are defined. Stenotothorax lanei (Saylor) is redescribed. Diagnosis and new distributional data are presented for S. lanei, S. mcpeaki Gordon and Skelley, S. washtucna (Robinson) and S. woodleyi Gordon. Seven new species are described from the northwestern United States: S. lahontanensis, S. niviviator, S.odontomonteus, S. schneppi, S. smilodon, S. winnemucca, and S. wintoni. All new species are illustrated and compared with presumed closest relatives.
Dyslexia Skelley and Gasca-Álvarez, new genus (Coleoptera: Erotylidae: Erotylinae: Erotylini), is described and illustrated. The genus is comprised of four new species, all described by Skelley and Gasca-Álvarez: D. belamyi, D. dathomirria, D. pulcricolor, and D. tomasi. The unique broad head structures of this genus are characterized and compared with other genera. Problems associated with the taxonomy of Erotylini are discussed.
Pocket gopher burrows were sampled from 22 counties within Arkansas to determine the associated faunal composition of three major families of Coleoptera (Histeridae, Leiodidae and Scarabaeidae) commonly associated with pocket gopher burrows. We collected eight species of Histeridae, four species of Leiodidae and eight species of Scarabaeidae from the burrows of Geomys breviceps Baird. Three of the Histeridae were new state records, Geomysaprinus goffi Ross, G. rugosifrons (Fall) and Margarinotus felipae (Lewis). All of the Leiodidae were new state records and one Scarabaeidae was a new state record, Dellacasiellus concavus (Say). The most commonly collected scarab beetles were Cryptoscatomaseter haldemani (Horn) and Geomyphilus insolitus (Brown). The most commonly collected hister beetle was Onthophilus kirni Ross. The Leiodidae were infrequently captured.
ThegenusBancousPic, originally described in the Heteromera (Rhysopaussidae) and later transferred to Cucujiformia (incertae sedis), was found to be congeneric with Rhamphidera Skelley (Erotylidae). Bancous is here placed in the family Erotylidae (Erotylinae, Tritomini) and Rhamphidera is moved into synonymy. This synonymy creates two new combinations: Bancous perplexus (Skelley) and Bancous eureka (Skelley). Bancous is redescribed and a lectotype is designated for Bancous irregularis Pic.
A systematic redefinition of the species belonging to the genus Geomyphilus Gordon and Skelley, 2007 (Coleoptera: Scarabaeidae: Aphodiinae) of Mexico and neighboring countries is presented. The new species G. tuzincola of Mexico is described and figured. The new combination Coelotrachelus macgregori (Islas, 1955) is proposed.