TL;DR: This work provides a taxonomic survey of the North American species of the genus Elonus Casey, 1895 (Coleoptera: Tenebrionoidea: Aderidae) and includes the description of a new species, Elonus gruberi n.
Abstract: This work provides a taxonomic survey of the North American species of the genus Elonus Casey, 1895 (Coleoptera: Tenebrionoidea: Aderidae). It includes the description of a new species, Elonus gruberi n. sp. from the United States, related to E. hesperus Werner, 1990 and to E. basalis (LeConte, 1855). A review and key to the North American species is provided.
TL;DR: Fungivorous and predatory beetles were more abundant in CWM than wood borers, scavengers, or taxa with undetermined feeding habits, but the two methods revealed similar overall trophic structure.
Abstract: Arthropods associated with Populus coarse woody material (CWM) were sampled from aspen-mixedwood stands in north-central Alberta using rearings from wood bolts and flight-intercept traps attached to snags. More than 39 000 arthropod specimens were collected over 3 years, comprised mainly of Coleoptera, Diptera, Hymenoptera, and Acari. Detailed analyses are provided to compare the number of species, standardized abundance, and trophic structure between collecting methods for 257 saproxylic species of Coleoptera. Abundance of beetle species, from both rearings and window traps, and rarefaction estimates of species richness indicate little difference between methods with respect to expected number of species. However the abundance of particular beetle families differed significantly between methods, with the Aderidae, Anthicidae, and Scaphidiidae collected mainly in rearings and the Micropeplidae, Bostrichidae, Cephaloidae, Clambidae, Salpingidae, and Tenebrionidae more commonly collected with window traps. Fungivorous and predatory beetles were more abundant in CWM than wood borers, scavengers, or taxa with undetermined feeding habits, but the two methods revealed similar overall trophic structure. To census the variability in saproxylic arthropod faunas from CWM, a combination of collecting methods is recommended.
TL;DR: This paper overviews more than 39 families of fossil Coleoptera from Lower Cretaceous Lebanese amber from nine outcrops and provides a new interpretation of the taxon “Lasiosynidae” by placing it as a subfamily in the family Eulichadidae.
Abstract: This paper overviews more than 39 families of fossil Coleoptera from Lower Cretaceous Lebanese amber from nine outcrops. Lebanese amber contains the oldest representatives of the families Scydmaenidae (considered by some as a subfamily of Staphylinidae), Ptiliidae, Elodophalmidae, Clambidae, Throscidae, Lebanophytidae fam. n., Ptilodactylidae, Cantharidae, Melyridae, Dasytidae, Dermestidae, Ptinidae, Kateretidae, Erotylidae, Latridiidae, Laemophloeidae, Salpingidae, Anthicidae, Melandryidae, Aderidae, Curculionidae (Scolytinae). The families Chelonariidae and Scraptiidae are known from both Lebanese amber and Baissa, with both sites having a comparable age. The subfamilies Trechinae (Carabidae), Euaesthetinae (Staphylinidae) and Liparochrinae (Hybosoridae) first appear in the fossil record in Lebanese amber. The Coleoptera in Lebanese amber mostly belong to groups with arboreal habits (as found today in wood and tree fungi). Eochelonarium belle gen. et sp. n., Rhizophtoma synchrotronica sp. n., Rhizobactron marinae gen et sp. n. and Atetrameropsis subglobosa gen. et sp. n. are described from Lebanese amber. A new subfamily in the family Cerophytidae is proposed for Aphytocerus communis Zherichin, 1977 (Aphytocerinae subfam. n.) and new genus Baissopsis gen.nov. is erected for Baissophytum amplus Chang, Kirejtshuk et Ren, 2011. Also a new interpretation of the taxon “Lasiosynidae” is provided by placing it as a subfamily in the family Eulichadidae with two genera ( Lasiosyne Tan, Ren et Shih, 2007 and Bupredactyla Kirejtshuk, Chang, Ren et Shih, 2010), while the other genera initially regarded as “Lasiosynidae” were tentatively transferred into Eulichadinae sensu n. ( Mesodascilla Martynov, 1926; Tarsomegamerus Zhang, 2005; Brachysyne Tan et Ren, 2009; Anacapitis Yan, 2009; Parelateriformius Yan et Wang, 2010 and Cretasyne Yan, Wang et Zhang, 2013) with the new synonymy of Tarsomegamerus and Parelateriformius syn. n. The genus Mesaplus Hong, 1983 described in the family Triaplidae is also transvered to Eulichadinae. The genera Artematopodites Ponomarenko, 1990; Dzeregia Ponomarenko, 1985 and Glaphyropteroides Handlirsch, 1906 proposed for species known only by separate elytra and recently included in the “family” Lasiosynidae (Yan et al., 2013) are regarded as Elateriformia incertae sedis . The first insect from the newly discovered outcrops of Nabaa Es-Sukkar – Brissa: Caza (District) Sir Ed-Danniyeh, Mouhafazet (Governorate) Loubnan Esh-Shimali (North Lebanon) is described and the first general description of this outcrop is made.
TL;DR: Strong resemblances between some PllipalPlnae and Pyrochroidae appear to have arisen through convergent evolution, and the following genera are reassigned to the families indicated.
Abstract: . The family Pythidae is defined on adult and larval characters to include the subfamilies Pythinae and PllipalPlnae. Trachelostenidae stat.n. is excluded. Relationships of Pythidae, Boridae, Trictenotomidae and SalPlngidae (s.l.) are analysed. Strong resemblances between some PllipalPlnae and Pyrochroidae appear to have arisen through convergent evolution. Adults and larvae of the New Zealand genera Techmessa, Techmessodes and Exocalopus are described. In Scraptiidae, adults of the New Zealand genera Nothotelus and Phytilea, and the larva of Nothotelus, are described. Type data are given for all described New Zealand species of these families. The following new synonymies are established: PllipalPlnae (Abdullah, 1964)=Techmessinae Paulus, 1971. Exocalopus pectinatus Broun, 1893=nitidiceps Broun, 1910. Techmessa concolor Bates, 1874=attenuata Broun, 1893=rugicollis Broun, 1910=unicolor Paulus, 1971. Techmessa telephoroides Bates, 1874=varians Broun, 1893. Techmessodes Plcticornis (Broun, 1880)=distans (Sharp, 1882). Techmessodes versicolor Broun, 1893=cephalotes Broun, 1910. The following genera are reassigned to the families indicated: Ischyomius to Trictenotomidae (from Pythidae or Melandryidae). Phytilea to Scraptiidae (from Oedemeridae or Anthicidae). Pseudananca to Aderidae (from Oedemeridae). Scraptogetus (=Metasclera) to Aderidae (from Scraptiidae, Oedemeridae or Anthicidae).