DOI: 10.15468/ac2uf9
title: Amphi-Indian Ocean Disjunction in the Trans-Pacific Genus Archaeoglenes Brown (Coleoptera: Tenebrionidae: Phrenapatinae): New Taxonomic and Distributional Data

description: This dataset contains the digitized treatments in Plazi based on the original journal article Iwan, Dariusz, Kamiński, Marcin Jan, Raś, Marcin (2015): Amphi-Indian Ocean Disjunction in the Trans-Pacific Genus Archaeoglenes Brown (Coleoptera: Tenebrionidae: Phrenapatinae): New Taxonomic and Distributional Data. The Coleopterists Bulletin (mo 14) 69: 152-166, DOI: 10.1649/0010-065X-69.mo4.152ABSTRACTThree new species of the genus Archaeoglenes Brown are described: Archaeoglenes gomyi Iwan and Kamiński (Réunion), Archaeoglenes loebli Iwan and Kamiński (Mauritius), and Archaeoglenes triplehorni Iwan and Kamiński (New Caledonia). Morphology and anatomy of the newly described species are investigated using micro-CT techniques. Archaeoglenes gomyi and A. loebli extend the generic range to the Afrotropical realm. Distributional data concerning all known representatives of Archaeoglenes are revised and discussed. Archaeoglenes novaeguineae Kaszab, 1982 is proposed as a synonym of Archaeoglenes baloghi Kaszab, 1982. The 5-5-4 tarsal formula is reported for the first time for Archaeoglenes (A. baloghi). The newly obtained morphological and anatomical data are incorporated into the taxonomic concept of Archaeoglenes.Key Words: Archaeoglenini, new species, endemism, biogeography, micro-CT, tarsal formula, Chuck TriplehornArchaeoglenes Brown, 1893 is a trans-Pacific genus of darkling beetles, with 15 species that range from Japan, Australia, Papua New Guinea, the Solomon Islands, New Caledonia, and New Zealand through Hawaii to Central America (Doyen and Lawrence 1979; Kaszab 1982a; Watrous 1982; Sasaji 1983). It was originally proposed for a single species, Archaeoglenes nemoralis Brown, 1893, and placed in the family Colydiidae due to its 4-4-4 tarsal formula and distinctly clavate antennae (Brown 1893). This taxonomic concept was changed by Watt (1974), who, based on larval and imaginal morphology, transferred it to Archaeoglenini, a new monogeneric tribe within Tenebrionidae. This view was adopted by subsequent authors (e.g., Doyen et al. 1990; Bouchard et al. 2005, 2011).Overall, only a few taxonomic papers have been published about this little-studied genus, and they usually only contain descriptions of a single species (Brown 1893; Ford 1968; Doyen and Lawrence 1979; Kaszab 1982a, b; Watrous 1982; Sasaji 1983). Moreover, because most of these publications were published within the narrow time frame of 1979–1983, some authors were unable to take all of the available data into consideration. Furthermore, due to the scarcity of Archaeoglenes specimens, most of the species descriptions were based on relatively few specimens (e.g., Kaszab 1982a; Sasaji 1983). All of these factors had a negative impact on Archaeoglenes taxonomy, which is mostly highlighted in the unequivalence of characters used to describe particular species (e.g., Kaszab 1982b; Watrous 1982).Outside of the taxonomic research, Archaeoglenes is an interesting group for zoogeographical investigation. Representatives of this genus are extremely small (1.2–2.8 mm) and, in most cases, they exhibit a loss of hindwings. However, they are found in different broadleaf forests across the Pacific Ocean, Gulf of Mexico, and Caribbean Sea (Fig. 1). Moreover, as all of the currently known species seem to be distributed on islands or continental coasts, there is no available data concerning the inland occurrence of this genus.During a recent study of material from the Natural History Museum of Geneva, we discovered two species of Archaeoglenes from Mauritius and Réunion. Because representatives of this genus had never been reported from the area of the Indian Ocean and the newly discovered localities were 9,000 km from the nearest known Archaeoglenes sites, we carefully analyzed the morphology of these species and herein describe them as new for science. Moreover, a comparative analysis of the morphology of specimens loaned from different institutions allowed us to describe one more new species and propose important changes in the interpretation of the whole genus. Due to the scarcity of available specimens representing Archaeoglenes, we used non-destructive techniques of X-ray micro-computed tomography (micro-CT) to investigate the anatomy of the studied individuals. Furthermore, the discovery of Afrotropical species inspired us to revise the distributional data concerning the whole genus.