Eleven species of Periclista subg. Neocharactus MacGillivray are recognized in North America. Six species occur in eastern North America: P. (N.) absens, n. sp., P. (N.) asper, n. sp., P. (N.) inaequidens (Norton), P. (N.) major, n. sp., P. (N.) subtruncata Dyar, and P. (N.) varia, n. sp. Five species are found only in California: P. (N.) bakeri (MacGillivray), P. (N.) curva, n. sp., P. (N.) pallipes (Provancher), P. (N.) parva, n. sp., and P. (N.) schiffi, n. sp. Known host plants are various species of oaks, Quercus spp. A key to species is provided, as well as descriptions and illustrations of each species.

The taxonomic history of the genus Eleodes Eschscholtz is reviewed and the subgenus Melaneleodes Blaisdell redefined based on characters of the female terminalia with Blaps carbonaria Say herein designated as type-species. Eleodes debilis LeConte is removed from Melaneleodes to a new monotypic subgenus, Omegeleodes, based on the female characters. The subgenus Melaneleodes as redefined contains eleven species: anthracinus Blaisdell (new status), carbonarius (Say), halli Blaisdell (new status), humeralis LeConte, neomexicanus Blaisdell, parowanus Blaisdell, pedinoides LeConte, quadricollis Eschscholtz, rileyi Casey, tricostatus (Say) and wenzeli Blaisdell. Eleodes halli Blaisdell is resurrected from synonymy as the oldest available name to replace the homonym Eleodes fuscipilosus Blaisdell 1925 (nec Casey 1890). Eleodes anthracinus Blaisdell, a subspecies of E. quadricollis Eschscholtz is elevated to full species. The subspecies E. quadricollis lustrans Blaisdell is placed in a new combination as Eleodes anthracinus lustrans. Eleodes speculicollis Blaisdell is reduced to subspecific status as E. wenzeli speculicollis, new combination. Eleodes reductus Blaisdell is reduced to a subspecies giving a new combination, E. rileyi reductus. Eleodes coloradensis Blaisdell, Eleodes concinnus Blaisdell and Eleodes quadricollis lassenica Blaisdell, are all submerged as synonyms under Eleodes rileyi Casey. A key to the species is provided along with diagnoses for each with notes on distribution and variation.

Eleodes carbonarius (Say) is redefined to contain a number of variants previously recognized as species or subspecies. Along with the previously recognized subspecies Eleodes carbonarius carbonarius, Eleodes carbonarius omissus LeConte, E. carbonarius knausi Blaisdell, and E. carbonarius soror LeConte, newly recognized subspecific combinations are: E. carbonarius omissoides Blaisdell and E. carbonarius chihuahuaensis Champion. New subspecies described herein are: Eleodes carbonarius nuevoleonensis and E. carbonarius disjunctus. Eleodes mazatzalensis Blaisdell is placed in synonymy under E. carbonarius carbonarius and Eleodes lineatus Blaisdell is placed in synonymy under E. carbonarius chihuahuaensis Champion. A key for the identification of the nine subspecies of Eleodes carbonarius is provided.

Two new species of Styringomyia Loew, 1845 (Diptera, Limoniidae) are described from Ghana. Their affinities to other African Styringomyia are discussed. Additionally 5 species are recorded for the first time for the country. An identification key for all Styringomyia from Ghana is given.

We describe Pheidole acutiloba Mackay, based on the majors, minors, females and males, with the head of the major formed into a shield. This species is similar to P. aberrans and P. obscurifrons, and we discuss the similarities and differences between the majors of the three species. We provide an amendment to the key in Wilson's monograph to accommodate the new species.

Hadropus Schoenherr, 1826 is a monotypic genus of Naupactini (Curculionidae: Entiminae), ranging in Brazil and Paraguay. It is easily recognized by the nebulose pattern of the elytral vestiture, the presence of very short rostrum and humped elytra with strongly bisinuate anterior margin. The morphological characters of the rostrum, antennae, legs, elytra and female genitalia relate Hadropus to Ericydeus Pascoe. Hadropus albiceris (Germar) shows variation in body size, morphometries of the pronotum and color of the scaly vestiture, that allows distinguishing two basic morphotypes. This paper includes descriptions of the genus and its single species, habitus photographs, line drawings of genitalia, and a map of distribution.

Twenty-three Ephemeroptera species are reported variously from four Central American countries (Costa Rica, Honduras, Nicaragua, Panama) and nine Mexican states (Chiapas, Durango, Guanajuato, Guerrero, Hidalgo, Oaxaca, Puebla, Queretaro, San Luis Potosi) for the first time. Campsurus decoloratus, Fallceon nikitai, and Tricorythodes explicatus are reported from Central America for the first time. Allenhyphes vescus is reported from southern Mexico for the first time, and second ever records are given for Choroterpes ungulus (Durango), and Leptohyphes priapus (Panama). Published record based checklists for the 28 Mexican states with reported mayflies are provided. The greatest diversity is found in Vera Cruz followed in order by Chihuahua, Chiapas, Tamaulipas, Neuvo Leon and Queretaro. Baetis magnus, Callibaetis pictus, Camelobaeitidus mexicanum, Fallceon quilleri, Neochoroterpes Oklahoma, Thraulodes brunneus, Traverella albertana and Vacupernius packeri are among the most commonly encountered mayflies in Mexico.

The study of Chlorops species which were collected from Yunnan province is given. The following 12 species are described from Yunnan province as new to science: Chlorops ancistrus sp. nov., C. augustus sp. nov, C. digitatus sp. nov, C. flavaristatus sp. nov, C. latiusculus sp. nov., C. latus sp. nov., C. liae sp. nov, C. marginatus sp. nov, C. posticus sp. nov., C. rotundatus sp. nov, C. tengchongensis sp. nov. and C. triangulatus sp. nov. A key to the species of the genus from Yunnan is presented.

Two new species of the genus Hybos, H. longipilosus sp. nov. and H. xiaoyanae sp. nov., are described from Taiwan. These two species are closely related and distinctly different from other members of the genus in the sternite 8 swollen, sternites 7–8 with rather long hairs, epandrial lobes basally connected by the long curved bridge, and left surstylus much elongated.

Loyolaia Ananthakrishnan, a newly recorded genus of the subfamily Idolothripinae, is reported from China, with Loyolaia wuyiensis sp. n. is described. A key to all known species of this genus is provided.

Euhybus is newly recorded from Taiwan. A new species, Euhybus taiwanensis sp. nov, is described. An updated key to the Oriental species is given.

This paper deals with the genus Glomerexis and provides a revised generic diagnosis. Moreover, a new species Glomerexis angustifolia Wang et Che is described and illustrated.

A new species of Aulacaspis jiangsuensis sp.nov. from the genus Aulacaspis Cockerell is described and illustration. Its relationships with related species are discussed.