Registered users receive a variety of benefits including the ability to customize email alerts, create favorite journals list, and save searches.
Please note that a BioOne web account does not automatically grant access to full-text content. An institutional or society member subscription is required to view non-Open Access content.
Contact email@example.com with any questions.
Heterosternuta phoebeae, new species, is described, illustrated, and discussed in the context of other members of the genus. The bizarre, large, trifid aedeagus of this species is unique in Heterosternuta Strand.
Synommatoides scutellatus, new species, is described from China and is compared with S. shirozui Morimoto from Japan. The relationship between Synommatoides Morimoto and Synommatus Wollaston is discussed and the generic character of Synommatoides Morimoto is recomposed. Type specimens are deposited in the Institute of Zoology, the Chinese Academy of Sciences, Beijing, China.
Allaeotes niger, new species, is described from China and compared with A. griseusPascoe, 1885 from Indonesia. The relationship between the genus Allaeotes Pascoe and Synommatus Wollaston is discussed. All type specimens are deposited in the Institute of Zoology, the Chinese Academy of Sciences, Beijing, China.
The North American monotomid fauna, north of Mexico, includes two described species of the genus LeptipsiusCasey, 1916, L. striatus (LeConte, 1858) and L. dilutusCasey, 1916. Adults of L. striatus are redescribed and comments are provided on L. dilutus. A new species, L. imberbis, is described from specimens collected in New Mexico and Arizona. Based on a study of syntypes, the following species, previously included in the genus Bactridium, are transferred to the genus Leptipsius: L. brevicornis (Sharp, 1900), L. crassus (Sharp, 1900), and L. eumorphus (Sharp, 1900) [new combinations].
Aneurops convergens (Sharp 1900), new combination, from Arizona, New Mexico, and México is redescribed and compared with the other species of the genus, A. championi Sharp. This is the first record of the genus Aneurops Sharp for North America north of México.
Celetes Newman is found to be a junior homonym of Celetes Schönherr and Leptoceletes Green is proposed as a replacement name for it (new synonymy, status, and sense). This results in the following new combinations: Leptoceletes basalis (LeConte), Leptoceletes burchelli (Bourgeois), Leptoceletes dehiscens (Green), Leptoceletes leo (Zaragoza), Leptoceletes pallidus (Green), Leptoceletes subtilis (Kleine).
Mastogenius guayllabambensis MacRae, new species, is described from the Andes Mountains of northwestern Ecuador. The species is fully described, and photographs of the holotype and type habitat, a line drawing of the male genitalia, and comparisons to similar species in the genus are presented.
Species of 11 families of Coleoptera are known to pollinate flowering plants. In western North America, the 300 species of the beetle subfamily Dasytinae (Coleoptera: Melyridae) are commonly found on flowers, where adults feed on both nectar and pollen. The dense setae and pubescence of adult dasytines often trap pollen grains, which are transported to other flowers during the course of normal adult feeding. Adults of many dasytine species are abundant, and may form large feeding aggregations. A preliminary list is presented of plant species on whose flowers or pollen cones adult dasytines have been collected, based on literature records and museum specimen labels. These plant species represent 68 genera in 26 families, and include species grown as food crops and species that are important browse or forage plants for livestock and wildlife. At least two plant species, both in the family Polemoniaceae, rely predominantly on species of Dasytinae for pollination.
The stridulatory mechanism in Oxycheila tristis (Fabricius) (Cicindelinae: Megacephalini) is described. Sound is produced by males and females rubbing the internal edge of the hind femur (plectrum) on the ringed elytral epipleura (pars stridens). The hind legs usually alternate, and sound is mostly generated during backward movement. Abdominal movements seem to play a role in the amplitude modulation of the signals. Temporal characteristics of the sound are slightly different for both sexes (longer leg cycles in females) but the frequency spectra are similar. The same stridulatory structures were found in other Oxycheila species as well as in the closely related Cheiloxya binotata longipennis Horn. Considering the different stridulatory mechanisms described in cicindelids, sound production probably evolved independently at least three times in this group.
Apomorphies of the internal reproductive organs relevant to production and utilization of spermatophores, biologic traits associated with anthophily, and presence of afferent peg sensilla on the antennae suggests that a presumed monophyletic assemblage of genera of subfamily Clerinae are descendants of an ancient monophyletic stock linked to early angiosperm evolution. The species examined include all suprageneric categories of Cleridae proposed to date. The ground plan of the internal reproductive organs of Cleridae for the male involved a pair of multifollicular testes, tubular vas deferens, unichambered seminal vesicle, one pair of accessory glands, highly muscular ejaculatory duct, and for the ancestral female, a pair of multifollicular ovaries, non capsular spermatheca, well-developed spermathecal gland and spermathecal gland duct, and a spacious vagina. Based on presumed homologies of the male accessory glands across generic lines, and to a lesser extent on extraction of contents of the vagina of gravid females, the following clerines are thought to utilize the “mating plug” type of spermatophore as a method of sperm transference: Trichodes, Aulicus, Chilioclerus, Opilo, Dieropsis, Phlogistus, Phlogistomorpha, Scrobiger, Trogodendron, Zenithicola, and Balcus. Many species of several of the noted genera are anthophilic; histological work involving the alimentary canal, and examination of midgut contents, confirm their pollen feeding habits, and their opportunistic predatory nature on flower-visiting insects. The abovementioned genera are morphologically diverse externally, but nine share a peculiar microsetose character of the antennal club that is presumed synapomorphic. Investigations involving electron microscopy show that some of these microsetae are peg sensilla, which in other beetles are known to function as thermoreceptors. It is hypothesized that these thermoreceptors present on the antenna of spermatophoral clerines are afferent structures that enable the beetles to avoid fire-death in xeric environments. The widespread distribution, peculiar structure of the internal reproductive organs, substantial diversity of external structure, and anthophilous character invite the speculation that the spermatophoral clerines represent a monophyletic group evolved from an ancient Gondwanan ancestor tied to early Angiosperm diversification. Then, due to tectonic, climatic, and ecological events, the spermatophoral clerines became vicariously distributed onto the North American, Eurasian, African, and Australian plates on which they underwent an extensive radiation in part due to Angiosperm proliferation.
A new genus, Boricyrtinus, and four new species, Merostenuscharynae, Eugamandusricarti, Decarthriaboricua, and Boricyrtinusnilseni are described from Puerto Rico. A key to the genera of the Cyrtinini of the Western Hemisphere is presented.
Bridwell (1946) used Bruchus arizonensis Schaeffer as type of the genus when he described Neltumius Bridwell in a key. Bradley (1947) transferred Bruchus gibbithorax Schaeffer and B. texanus Schaeffer into Neltumius. We describe Neltumius dospatrias Romero and Johnson, a new species from Mexico and the U.S.A. related to N. texanus. We update the distributions of the four species, list the known hosts of each species, figure the male genitalia, and key the species. Neltumius is an especially interesting genus of bruchids because its larvae feed in seeds of very different hosts, Prosopis L. (Fabaceae) and Condalia Cav. (Rhamnaceae).
Meganeltumius Romero and Johnson and M. juani Romero and Johnson are described. This new genus and species are quite distinct due to the combination of the large gibbosities on the prothorax, the gibbosities on the elytra, the elongate genitalia, and especially the unique pattern of serrations on the metafemur. The hind femur is armed on its inner edge with about eight small serrations beginning about 0.5 from the base and ending at the apex in a subapical spine. This pattern of serrations and spines on the metafemur is unique to this genus of bruchids. All of these characters separate this species from any other and the pattern of serrations and spine on the metafemur separate this genus from any genus known to us. It resembles a large species of Neltumius Bridwell, consequently the name.