The click beetle genus Limonius is revised for North America and forty-seven species are recognized: L. aeger LeConte, L. aurifer LeConte, L. auripilis (Say), L. basilaris (Say), L. beutenmuelleri Van Dyke, L. bicolor Van Dyke, L. californicus (Mannerheim), L. canus LeConte, L. clypeatus Motschulsky, L. confusus LeConte, L. consimilis Walker, L. cribriceps Van Dyke, L. crotchii Horn, L. definitus Ziegler, L. ectypus (Say), L. flavomarginatus Knull, L. fulvipilis Candeze, L. griseus (Beauvois), L. huguenini Van Dyke, L. humidus Lane, L. jonesi Lane, L. lanchesteri Lane, L. lanei Van Dyke, L. meridianus Knull, L. mirus LeConte, L. nebulosus Van Dyke, L. nimbatus (Say), L. nitidulus Horn, L. olentangyi Knull, L. ornatulus LeConte, L. pappi Becker, L. pectoralis LeConte, L. pictus Van Dyke, L. plebejus (Say), L. quercinus (Say), L. rectangularis Fall, L. sinuifrons Fall, L. stigma (Herbst), L. subauratus LeConte, L. ursinus Van Dyke, L. venablesi Wickham, two new species are described, L. kondratieffi n.sp., L. norahae n. sp., and nine new synonyms are recognized. Limonius insperatus Brown is designated as a synonym of L. aeger LeConte, L. dubitans LeConte is designated as a synonym of L. agonus (Say), L. shircki Lane and L. snakensis Lane are designated as synonyms of L. crotchii Horn, L. infuscatus Motschulsky is designated as a synonym of L. ectypus (Say), L. seminudus Van Dyke is designated as a synonym of L. fulvipilis Candeze, L. maculicollis Motschulsky is designated as a synonym of L. ornatulus LeConte, L. arizonicus Van Dyke is designated as a synonym of L. sinuifrons Fall, L. anceps LeConte is designated as a synonym of Limonius subauratus LeConte, and L. agonus (Say) is recognized as a valid species. Neotypes were designated for L. agonus and L. ectypus. Limonius debilis Dejean is considered a Nomen dubium.

A total of 143 new USA state and Canadian province records of mayfly species are given based on initial published data. One hundred species and 34 states and provinces are represented in the new data. The most cited species (with four or more new state and provincial records each) include Acentrella nadineae, Iswaeon anoka, Leucrocuta maculipennis, Paracloeodes minutus, Procloeon viridoculare, and Pseudocentroptiloides usa. The most cited regions (with five or more new species records each) include Georgia, Indiana, Kansas, Kentucky, Maryland, Massachusetts, Michigan, Mississippi, Montana, North Carolina, Ohio, and Vermont. While the first record of Spinadis simplex is given for Arkansas, the former incorrect Arkansas record for the latter is shown to be attributable to Raptoheptagenia cruentata.

A new species, Anabasis prompta is described from South China. One related genus and species, Pseudanabasis incanimaculata gen. and sp. nov., is described from Xizang, China.

Bazaria Ragonot and its type species, B. turensis Ragonot, are reported for the first time from China. One species, B. dulanensis sp. n. is described as new to Science. A key to Chinese species of Bazaria is provided and the geographic distribution is discussed here.

Two new species, O. flavimaculata sp. nov. and O. liui sp. nov., are described from Palaearctic China.

The subfamily Siloscinae Gozmány, 1968 and the genus Autochthonus Walsingham, 1891 are recorded from Guangdong Province, China. Autochthonus singulus sp. nov. is described and illustrated. This is the first record of the genus and the subfamily outside the Ethiopian Region.

Miss Mattie Wadsworth, an amateur entomologist from rural Maine, stands out as one of the early women authors in Entomological News. Wadsworth's correspondence with Philip P. Calvert, prominent and longtime member of the American Entomological Society, shows Calvert's important role in cultivating her entomological interests. Celithemis martha (Odonata: Libellulidae) was named in honor of Wadsworth by E. B. Williamson.

The diversity of stenocranine planthoppers and their reported host plants is reviewed and discussed with particular reference to the New World fauna. A new species of Obtusicranus and two new genera (Frameus n. g. with 5 new species, Tanycranus n. g. with 1 new species) are described and illustrated. These taxa are the first stenocranine planthoppers known from Mexico and South America. Members of Frameus and Tanycranus are remarkable for having a greatly elongated head. A key to New World genera of stenocranine planthoppers and keys to species for the genera Obtusicranus and Frameus are provided. Stenocranus maculipes (Berg) described from Argentina is not a stenocranine, but is in the Delphacini and is here referred to incertae sedis. Stenocranus luteivitta (Walker) is not a Stenocranus, and is here referred to Delphacodes. The specimen reported by Hamilton (2006) from Illinois as the Asian genus Terauchiana is here found to be Kelisicranus arundiniphagus.