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EN
Eight new species of the Tribe Megapenthini Gurjeva, 1973 from China, Laos, and from the Philippines are described and illustrated: Cateanus kucerai sp. nov., Friedrichiellus luzonensis sp. nov., Gamepenthes kresli sp. nov., G. phoupanensis sp. nov., G. shinuishanensis sp. nov., G. turnai sp. nov., Megapenthes jintangensis sp. nov., Procraerus kresli sp. nov. A key to the species of the genus Gamepenthes Fleutiaux, 1928 from China, and one from Laos and Vietnam is provided, zoogeographical and taxonomical remarks as well as a discussion on the phylogenetic importance of some characters of the species and their ecobiotic life are given.
EN
Valdivelater gen. nov., with two included species, V. krahmeri sp. nov. and V. oneolensis sp. nov. are described from the Valdivian region of Chile. The relationships of this genus to other Protelaterini and the position of the tribe within the family Elateridae are discussed, and a key to protelaterine genera and related tribes is provided. Resumen.— Se describe Valdivelater gen. nov., el cual incluye dos especies V. krahmeri sp. nov. y V. oncolensis sp. nov. del Centro Sur de Chile. Se discuten las relaciones de este y otros géneros de Protelaterini, y su posición sistemática en la familia Elateridae, se proporciona además una clave de los géneros de Protelaterini y de las tribus relacionadas con este.
EN
Eight new species of the tribe Megapenthini from the Indonesian island Sulawesi are described and illustrated: Abelater bosi sp. nov., A. buechei sp. nov., A. dongalaensis sp. nov., A. jakubi sp. nov., Cateanus sulawesiensis sp. nov., Friedrichiellus bosi sp. nov., Simodactylus saetosus sp. nov., and Xanthopenthes dongalaensis sp. nov. New records of further eight species of the tribe Megapenthini from Sulawesi are given. Abelater brandti Schimmel, 2004, and A. jaechi Schimmel, 2004 are recorded from this island for the first time.
EN
In the present preliminary study we report an investigation on taxonomic status of individuals displaying diagnostic traits of intermediate values between the morphologically typical forms of Athous haemorrhoidalis (Fabricius 1801) and A. vittatus (Gmelin 1790) species occurring sympatrically. The presence of the "intermediate form" invoked the hypothesis of interspecific hybridization between A. haemorrhoidalis and A. vittatus species. An alternative explanation is that the "intermediate form" comprises individuals that are morphological variants of either of the species, without interspecific gene flow. We used partial sequences of two mitochondrial genes coding for the cytochrome oxidase subunit I (cox1) and 16S ribosomal RNA (rrnL), respectively. Additionally, we examined the variability of five polymorphic allozyme loci: 6Pgd, Idh, Mdh, Pgm and Gpi. Altogether, 28 A. haemorrhoidalis, 7 A. vittatus and 8 "intermediate form" individuals were included into the study. Phylogenetic analyses produced the trees of a consistent topology with high statistical support regardless of the method used. The specimens signified as the "intermediate form" constituted a monophyletic group with individuals of A. vittatus species. Empirical data confirmed that the reproductive isolation between the species studied is complete. No haplotype was shared between A. haemorrhoidalis and A. vittatus in sympatry. Similar results were obtained using the analysis of allozyme data. Especially at Idh and 6Pgd loci, alleles characteristic for A. vittatus and the "intermediate form" were not found in A. haemorrhoidalis, despite the larger sample examined. This suggests that the "intermediate form" is a phenotypic variant of A. vittatus without the signature of introgression.
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