In this study, the genitalic structures of species belonging to the genera Stenurella, Stictoleptura, Pseudovadonia, Leptura, Pachytodes, Anastrangalia, Etorofus, Pedostrangalia and Strangalia of Lepturinae (Cerambycidae: Coleoptera) were examined. Several given for the first time in detail, some others were compared with related literature.

An annotated checklist of the forty-seven species of Chrysididae from Pennsylvania is presented. The checklist is based primarily on 655 by-catch specimens collected by the Pennsylvania Department of Agriculture during statewide exotic pest surveys from 2011–2013. Additional records from the literature and regional museum collections are also summarized. We confirm county-level localities in Pennsylvania for thirty-nine species belonging to fifteen genera. Three species, Caenochrysis areolata (Mocsáry), Ca. deversor (Bohart), and Chrysis conica Brullé are reported from Pennsylvania for the first time. Caenochrysis deversor (Bohart) has not been previously reported east of the Mississippi River and may represent a recent accidental introduction to the state.

The genus Hilara Meigen is reported from Shaanxi for the first time with 9 species. The following seven species are described as new to science: Hilara biprocera sp. nov., H. digitata sp. nov., H. lata sp. nov., H. ningshana sp. nov., H. qinlingensis sp. nov., H. spinata sp. nov., and H. zhouzhiensis sp. nov. Two species are newly recorded from this province: H. flata Liu, Li et Yang and H. digitiformis Liu, Li et Yang. A key to the species of the genus Hilara from Shaanxi is presented.

A revision of the genus Chrysotus Meigen from Inner Mongolia, China is presented. Ten species are herein recorded. The following two species are described as new to science: Chrysotus cerciaffiliatus Liu, Wang & Yang, sp. nov. and Chrysotus neimengguensis Liu, Wang & Yang, sp. nov. Five species are recorded from Inner Mongolia for the first time: Chrysotus biprojicienus Wei & Zhang, Chrysotus femoratus Zetterstedt, Chrysotus minuscapillumus Liu et Yang, Chrysotus motuoensis Liu et Yang and Chrysotus pennatus Lichtwardt. A key to the species of Chrysotus from Inner Mongolia is provided.

Mississippi Hydrochidae are poorly known. In this paper, we attempt to untangle some of the taxonomic difficulties caused by recent dubious works of D. Makhan and to validate an undescribed species from previously unpublished research. The 12 species occurring in Mississippi are reviewed and one new species, H. falsus Hellman sp.n., is described. Six new synonymies are established as follows: Hydrochus hanoewanti Makhan, 1994 is a junior synonym of Hydrochus rugosus Mulsant, 1844; Hydrochus monishi Makhan, 1995 is a junior synonym of Hydrochus foveatus Haldeman, 1852; Hydrochus equicarinatus Blatchley, 1928 is a junior synonym of Hydrochus simplex LeConte, 1855; Hydrochus daviniaae Makhan, 1995 is a junior synonym of Hydrochus vagus LeConte, 1851; Hydrochus bakkeri Makhan, 1995 is a junior synonym of Hydrochus obscurus Sharp, 1882; and Hydrochus soesae (Makhan), 2004 is a junior synonym of Hydrochus scabratus Mulsant, 1844. Hydrochus inaequalis LeConte, 1855 is removed from synonymy with Hydrochus foveatus Haldeman, 1852 and resurrected as a proper species. Neotypes are designated for H. rugosus Mulsant, 1844, H. rufipes Melsheimer, 1844, and H. scabratus Mulsant, 1844. A lectotype is designated for H. foveatus Haldeman, 1852. Species descriptions, illustrations of male genitalia, distribution maps and a key to species are presented. Additional notes on Makhan species and holotypes, including unavailable types, are provided.

This work is aimed at the species-level identification of the brachypterous forms of the genus Rhyopsocus found primarily in ground litter throughout southwestern United States, Mexico, and Guatemala. Characters for separation of species used in the present study and in past studies are reviewed critically. A revised definition of Rhyopsocus is given, based in part on venation of macropterous forms. The structure of the complex Rhyopsocus phallosome is compared to that of the species of the genus Psoquilla Hagen. Two new species of Rhyopsocus are described, both from southwestern United States and known to extend into Mexico. The descriptions of Rhyopsocus maculosus García Aldrete, Rhyopsocus micropterus Mockford, Rhyopsocus texanus (Banks) and Rhyopsocus concavus Garca Aldrete are augmented with some new characters. A key to the brachypterous forms of Rhyopsocus species occurring in the area under study is presented. The question of whether the species dealt with here form a clade within Rhyopsocus is briefly discussed but not resolved.