Systematics of the Protohermes xanthodes species-group in eastern Asia (Megaloptera: Corydalidae)

A new species‐group of the dobsonfly genus Protohermes is proposed, the Protohermes xanthodes species‐group. Three species from eastern Asia belonging to the new species‐group are redescribed and illustrated. Phylogenetic relationships among the species in this group, as well as the biogeography of these species, are discussed on the basis of a cladistic analysis.     

Comparative mitochondrial genomics and phylogenetics among species of the Oriental dobsonfly genus Neoneuromus van der Weele, 1909 (Megaloptera: Corydalidae)

The dobsonfly genus Neoneuromus van der Weele, 1909 represents one of the megalopteran lineages with large body-size, and comprises 13 species all endemic to the Oriental region. In the present study, the mitochondrial genomes (mitogenomes) of 12 species of this genus were determined and analyzed for the first time. The mitogenome of the genus-type, Neoneuromus fenestralis (McLachlan, 1869), as a representative of these congeneric species, is herein described in detail. All of the mitogenomes of Neoneuromus are composed of 37 encoded genes and a control region. The evolutionary rates of the protein coding genes (PCGs) of the 13 species of Neoneuromus as well as different genera of Corydalinae are estimated. All the transfer RNA genes (tRNAs) have the typical clover-leaf secondary structure except trnS1 (AGN). Interspecific relationships within Neoneuromus were reconstructed based on different datasets generated from mitogenomic sequences. Our results indicate that tRNA and ribosomal RNA genes (rRNAs) of Neoneuromus species contribute phylogenetic signal when being concatenated with the PCGs, thus should be kept during phylogenetic analysis. The results sheds light on understanding the evolution of these aquatic and predatory insects.     

越南北部齿蛉及鱼蛉种类纪要（广翅目：齿蛉科）

基于近3年意大利佛罗伦萨大学与越南国家自然博物馆联合考察采集的标本,记述越南北部齿蛉科4属18种,包括6个越南新记录种:普通齿蛉Neoneuromus ignobilis Navás,1932、东方齿蛉N.orientalis Liu&Yang,2004、锡金齿蛉N.sikkimensis(van der Weele,1907)、广西星齿蛉Protohermesguangxiensis Yang&Yang,1986、台湾斑鱼蛉Neochauliodes formosanus(Okamoto,1910)和污翅斑鱼蛉N.fraternus(McLachlan,1869)。     

云南省齿蛉亚科的新种记述(广翅目:齿蛉科)

齿蛉亚科(Corydalinae)为中至大型的广翅目昆虫,头部扁平,头顶方形,两侧多具发达的齿突;触角丝状或近似锯齿状,雌雄同型;翅的径横脉(r)一般3条以上,第一臀脉(1A)分2～3支;雄腹端具肛上突和肛下突各一对。 世界已知9属百余种,主要分布于亚洲南部、美洲和非洲南部。我国种类较多,云