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Institute
Beetles of the genus Paederus sensu stricto Fabricius, 1775 (Coleoptera: Staphylinidae) are often noticed because of their potency in inducing a dermal lesion, so-called linear dermatitis. This genus, which is placed in the tribe Paederini and subfamily Paederinae of Staphylinidae, currently comprises 490 species worldwide. Our study presents a short review of the former records of Paederus spp. in Iran plus some unpublished data. Field collections were done during March-October yearly (1997-2007) in northern and southern Iran and April-June from central, eastern, western and north-western Iran (2008-2009). The present study adds four species to the Iranian fauna of the genus Paederus, which are P. brevipennis Lacordaire, 1835, P. basalis Bernhauer, 1914, P. pubescens Cameron, 1914 and P. schoenherri Czwalina, 1899. Paederus brevipennis and P. schoenherri are the first members of the subgenus Harpopaederus Scheerpeltz, 1957, ever reported from Iran. Considering previous reports, museum-deposited materials and our findings, 14 species and subspecies of the genus Paederus, which are grouped in five subgenera, occur in Iran. These subgenera are Eopaederus Scheerpeltz, Harpopaederus Scheerpeltz, Heteropaederus Scheerpeltz, Paederus Fabricius and Poederomorphus des Cottes; however P. duplex spectabilis Bernhauer, 1913 is not yet attributed to any of the 13 so-far defined subgenera.
The multicicatrices fluted scale, Crypticerya multicicatrices Kondo and Unruh (Hemiptera: Coccoidea: Monophlebidae) is reported from the islands of San Andres and Providencia, Colombia, as a recent invasive species. This scale insect is polyphagous, and attacks numerous plants of economic importance such as avocado, breadfruit, mango, papaya and tropical ornamental plants. A compiled list of 95 host plant species of C. multicicatrices is given. A diagnosis of the adult female of C. multicicatrices and a revised taxonomic key to the species of the tribe Iceryini (Hemiptera: Monophlebidae) known from South America is provided. The pink hibiscus mealybug, Maconellicoccus hirsutus (Green) (Hemiptera: Coccoidea: Pseudococcidae), also is reported for the first time from the island of San Andres, where it is found commonly on Hibiscus spp. and Malvaviscus arboreus Cav. The need for the implementation of a classical biological control program in the archipelago in order to control invasive scale insect pests is discussed.
Aplagiognathus Thomson, 1861 (Coleoptera, Cerambycidae, Prioninae, Macrotomini) and its two species, A. spinosus (Newman, 1840) and A. hybostoma Bates, 1879, are redescribed and figured. As the type of A. spinosus is apparently lost, a neotype for the species is designated herein as is a lectotype for A. hybostoma. Keys to the North and Central American genera of Macrotomini (excluding the West Indies) and to Aplagiognathus species are provided. Details on the numerous changes in the nomenclatural history of the genus are also chronicled.
This report contains the first inclusive phylogenetic analysis and taxonomic structure for the genera presently included within the scarabaeid tribe Dynastini. The study was based upon morphological, biogeographic and molecular data and yielded direct support for the recognition of three subtribes in the Dynastini: Dynastina MacLeay, New Status (Dynastes Kirby, Augosoma Burmeister, Megasoma Kirby, Golofa Hope), Xylotrupina Hope, New Status (Xylotrupes Hope, Allomyrina Arrow, Trypoxylus Minck, Xyloscaptes Prell) and Chalcosomina Rowland and Miller, New Subtribe (Chalcosoma Hope, Haploscapanes Arrow, Beckius Dechambre, Eupatorus Burmeister, Pachyoryctes Arrow). The results provide indirect but significant support for the origin of the tribe Dynastini to be of an age no later than the early Late Cretaceous. Molecular and morphological evidence suggests that Eupatorus as constituted in current taxonomic literature is not monophyletic, and taxonomic alternatives are discussed to address this deficiency. A plausible explanation is also provided for the perplexing use by F. W. Hope of the family-group names Xylotrupidae and Dynastidae.
Collection methods and/or habitats sampled influence how many and which species are captured during entomological surveys. Here we compare Coleoptera catches among three survey activities, each using a single collection method, at the same study sites in Great Smoky Mountains National Park, USA. Activities included: short-term flight intercept trapping (FITs); sifting/Berlese funneling of leaf litter and extremely decayed downed coarse woody debris; and using emergence chambers containing coarse woody debris of various decay classes. In total, 2472 adult beetle specimens, representing 217 lowest identifiable taxa within 164 genera and 42 families, were collected during the FIT survey. Each survey activity yielded more than 2000 specimens, and a combined total of 413 species was collected. A combination of all surveys yielded the highest species richness when normalized for number of specimens indicating that variation of habitat and/or collection method significantly increases species richness. Of single surveys the FIT survey had the highest absolute species richness (217) and the highest richness when normalized for number of specimens. Species overlap among survey activities was low (Sorensen’s quotient of similarity was 0.20–0.27), which showed that each was about equally dissimilar from all others. Overlap of catch between FITs and emergence chambers was too low to justify substitution of emergence surveys with the FIT survey protocol used when attempting to collect saproxylic Coleoptera.
Coleoptera species composition and succession in downed woody debris habitats are poorly known in eastern North America. A photoeclector emergence chamber was used to concentrate Coleoptera that emerged from various decay classes of fine and coarse woody debris (FWD and CWD, respectively) collected in primary and secondary forest sites in Great Smoky Mountains National Park, Tennessee, USA. A total of 5673 adult beetle specimens, representing 305 lowest identifiable taxa within 227 genera and 51 families, was collected. One hundred fifteen species (38%) were represented by single individuals. Many more specimens and species were collected from CWD (4129 and 247, respectively) than from FWD (1544 and 162, respectively), but species richness accumulation curves were not significantly different. Many more specimens but an equal number of species were collected from primary forest (3347 and 207, respectively) than from secondary forest (2326 and 207, respectively). Species accumulation curves indicated higher richness in secondary forests. Based on a subset of 71 species represented by 10 or more specimens, 27 species were associated with fresh fine woody debris, 11 species with weathered fine woody debris, four with coarse woody debris decay class I, 14 with coarse woody debris decay class II, and eight with coarse woody debris decay class III–IV. Sixteen species were associated with secondary forests, whereas 28 species were associated with primary forests. Coarse woody debris decay class II taken in primary forests had highest absolute species richness with 156 species. In coarse woody debris species overlap decreased with increased difference in decay indicating faunal succession. Published works related to the study of the ecology of downed woody material are briefly summarized. Recommendations on developing a database of legacy trees for future researchers are given. Notes on the biology and photographs of the 71 species represented by 10 or more specimens are given to provide an atlas of eastern U.S. beetle species most commonly encountered in these habitats.
The community within extremely decayed downed coarse woody debris, here referred to as decay class V (CWD5), has never been systematically sampled. The presumption has been that rotten wood is eventually overrun by surrounding soil and litter inhabitants. Leaf litter and CWD5 were sampled for Coleoptera with a sifting/ Berlese technique at three primary and three secondary forest sites in Great Smoky Mountains National Park, Tennessee, USA, during fall 2006 and spring 2007. A total of 4261 adult beetle specimens, representing 216 lowest identifiable taxa within 159 genera and 28 families, were collected. Sixty-six species (31%) were represented by single individuals. Many more specimens (3471) and species (170) were collected from leaf litter than from CWD5 (790 and 111, respectively) but species accumulation curves showed that species richness was not significantly different between the two habitats. Eight species were significantly associated with CWD5, and 40 species were significantly associated with leaf litter. Species richness was significantly higher in secondary forest than primary forest, but more species were significantly associated with primary than secondary forest. Species richness was significantly higher in spring than fall. Notes on the biology and photographs of the 59 species represented by 10 or more specimens are given to provide an atlas of common eastern U.S. beetle species found in these habitats. Overall CWD5 is a distinct but overlooked habitat that may harbor numerous undescribed species or species considered rare.
The insect fauna within inflorescences of Heliconia bourgaeana Petersen (Zingiberales: Heliconiaceae) was evaluated in Parque Metlac, Fortín de las Flores, Veracruz, Mexico between May and October 1995. Floral bracts were present in May and some persisted to October, despite much destruction in August by a grackle, Quiscalus mexicanus (JF Gmelin) (Icteridae). Flowers were abundant in the bracts in May-June, after which their number declined as fruits matured. Insects that fed on the flowers were most abundant in May-June; several of them could be pollinators; the immature stages of most of these insects were absent from Heliconia Linnaeus. The floral bracts contained water enriched by decomposition of the flowers, and this provided nutrition for aquatic organisms. Syrphid larvae (Diptera) contributed the largest biomass among the aquatic insects, and their distribution among bracts was more uniform in time than that of other aquatic insects. Larvae of Culicidae and Psychodidae (Diptera) were more variable in density and were more abundant after decomposition of the flowers. The most abundant aquatic predators of culicid larvae were larvae of Toxorhynchites Theobald (Culicidae). The most abundant amphibious predators of dipterous larvae were adults of four species of Platydracus Thomson (Staphylinidae), one of them yet undescribed. To capture its prey, the Platydracus adult would immerse its head and thorax, with open mandibles, to snap at passing dipterous larvae.
A re-description and new records of Onthophagus viriditinctus Reitter, 1892 (Coleoptera: Scarabaeidae: Scarabaeinae: Onthophagini), an uncommon species from Iran, are provided. The taxonomic position and some nomenclatural problems are discussed. The placement in the subgenus Exonthophagus Kabakov, 2006 is proposed. Images of the male, female, aedeagus and drawings of lamella copulatrix of Onthophagus viriditinctus and Onthophagus haroldi Ballion, 1871, the only other species included in the subgenus, are supplied. A key for distinguishing the two species is provided.
Two new species of Goera, G. zwicki and G. nozakii (Trichoptera, Goeridae), from the Philippines and one new species, G. meyi, from Vietnam are described and illustrated herein. In addition, type specimens of G. disparilis Banks, G. octospina Banks, G. tagalica Banks, and G. uniformis Banks are illustrated. All species of Goera known from both the Philippines and Vietnam are listed.