Pleocoma hovorei La Rue, new species, is described and illustrated from Shasta and Tehama Counties, California, U.S.A. Included are remarks on taxonomy, adult behavior, and ecology. Based upon congruent morphological characters the new taxon is associated with the P. staff species group.

Hovorigenium ecuadorense, new genus and species from Manabi Province of western Ecuador is described, illustrated and compared to Trigonogenium Harold, 1869 from Argentina and Chile.

Derancistrus hovorei Lingafelter & Woodley, new species, is described from the Dominican Republic. A diagnosis is provided to discriminate it from morphologically similar taxa, in particular Derancistrodes vittatus (Olivier) and Derancistrus elegans (Palisot de Beauvois). Biological, distributional, and/or taxonomic notes are provided for other Hispaniolan Prioninae including Solenoptera dominicensis (Gahan), Elateropsis femoratus (Sallé), Sarifer seabrai Fragoso & Monné, and Mecosarthron domingoensis (Fisher).

Five new species of longhorned beetles (Coleoptera: Cerambycidae) from the Dominican Republic are diagnosed, described, and illustrated: Ataxia hovorei, Atimiola rickstanleyi, Drycothaea indistincta, Eburia pseudostigma, and Hormathus giesberti. In addition, Hormathus Gahan 1890 is transferred from Tillomorphini Lacordaire into Ibidionini Thomson, Division V; Trinoplon Zayas 1975 is a new synonym of Hormathus; and Hormathus bicolor (Zayas 1975) is a new combination. A key to the three species of Hormathus is provided.

The larva of Onthophagus orpheus orpheus (Panzer) is described here for the first time. Larvae were reared from adults collected in dung baited traps from central Wisconsin. The larva will key to the current couplet of O. oklahomensis Brown, O. pennsylvanicus Harold, and O. landolti Harold in Ritcher's (1966) key to U.S. Onthophagus. It can be separated from them by the amount of setae present on the gibbosity of the 3rd abdominal segment, amount of setae and shape of setal patches on the ventral pygidium, and the size of the head capsule of the mature larva.

Two new species of checkered beetle (Coleoptera: Cleridae: Clerinae) are described: Enoclerus franki Barr and Rifkind from French Guiana and E. hovorei Rifkind and Barr from Costa Rica. Both are named in honor of coleopterist Frank T. Hovore.

Stereoborus chinensis new species is a new species described from China, which establishes this genus in China for the first time. An updated key to all species of Stereoborus are presented. Illustrations of diagnostic features of the new species are provided. All type specimens are deposited in the Institute of Zoology, Chinese Academy of Sciences in Beijing, China.

A review of the genus Sapotes Casey (Curculionidae: Entiminae) is presented. Three new species from the central and southern Chihuahuan desert region of Mexico are described: Sapotes caseyi new species, Sapotes setosus new species, and Sapotes sordidus new species. A key is presented to identify all five species of the genus, along with observations on the geographical distribution and host associations of the newly described species.

Biological and distributional observations are presented for 166 species/subspecies of North American Cerambycidae representing 100 genera/subgenera in four subfamilies. New or confirmed records include 245 larval hosts, 39 distributions, 66 flower hosts, and 18 adult hosts. The male of Gaurotes thoracica (Haldeman) is described, the holotype deposition of Purpuricenus linsleyi Chemsak is clarified, and comments or corrections to previous literature records for several species are made.

Larval morphology of the Desmopachria vicina Sharp species group is investigated. For this purpose, the three larval instars of Desmopachria concolor Sharp and Desmopachria punctatissima Zimmermann are described and illustrated for the first time, with an emphasis on the morphometry and chaetotaxy. Both species have the setae LA3, LA4 and LA5 inserted proximally on the prementum and the seta LA10 inserted distally on the second labial palpomere, the two larval autapomorphies that define the genus Desmopachria Babington. They are also characterized by the presence of secondary setae on the ventral surface of the siphon of third-instar larva; this character state is a synapomorphy of Desmopachria Hyphydrus Illiger. Desmopachria concolor and D. punctatissima are very similar morphologically, suggesting that they could be closely related phylogenetically. Larvae of the D. vicina species group differ from those of the Desmopachria convexa (Aubé) species group in the presence of one additional seta on the dorsal surface of the prementum, the more distal insertion of the seta LA2 on the prementum, and the absence of one of the distal pores (LAb or LAd) on the first labial palpomere.

Ischyomius hovorei new species (Coleoptera: Pythidae) is described from Costa Rica, (type locality: Costa Rica, Puntarenas Province, Estación Pittier). The new species is diagnosed, illustrated, and keyed. Ischyomius hovorei can be distinguished from sympatric species of Ischyomius by its distinctive coloration, deeply emarginate tarsomeres, and the relatively long apical elytral spine.

Eulechriops hovorei, new species, is described from Arizona and Guerrero, México and named in honor of the late Frank Hovore. Eulechriops leucospilus Champion is reported for the first time from México and E. elongatus Champion for the first time from California.

Xylotrechus hovorei, new species, is described from southern California, and its host plant and larval biology are characterized. Separation from closely related species of Xylotrechus is discussed.

Immature stages in five chrysomelid clades, Cassidinae, Criocerinae, Cryptocephalinae, Lamprosomatinae and Galerucinae, use their feces as a significant part of their defense. In Galerucinae, only two genera, Blepharida Chevrolat and Polyclada Chevrolat have been known to carry larval fecal coats. We report for the first time that immature stages of two species in the African arrow-poison genus Diamphidia Gerstaecker, as well as an additional species of Polyclada Chevrolat cover themselves with their feces. In Diamphidia femoralis Gerstaecker, Diamphidia nigroornata Stål and an undetermined species of Polyclada, females oviposit masses on stems of Commiphora (Burseraceae) and Sclerocarya birrea (A. Richt.) Hochst. (Anacardiaceae), and they coat their eggs with sticky olive-green feces that harden into a dark-brown covering. All larval instars retain their feces, as semi-solid pellets or a wet mass that partially or completely covers the dorsum, or as long anal strands. The final instar loses its fecal coat prior to descending the host stem or dropping to the ground to enter the soil for pupation. These behaviors further support a close evolutionary relationship between Blepharida, Diamphidia and Polyclada, and suggest similar morphological features for maintaining fecal coats.

Through an analysis of the primary setae and pores of first-instar larvae of 31 genera of Hydroporinae, and 22 genera belonging to other dytiscid subfamilies, the ancestral system of primary setae and pores of the maxilla of the Hydroporinae is reconsidered. Fourteen setae and seven pores have been assigned to the ground plan pattern of the hydroporine maxilla. Larvae of Hydroporinae differ from those of other Dytiscidae in the absence of the primary pores MXa, MXb, MXc and MXd, and in the presence of the primary pore MXk.

Akrobothrus ecuadoriensis, new genus and species of bark beetle (Coleoptera: Curculionidae: Scolytinae: Bothrosternina) is described from the Ecuadorian Amazon. Its highly unusual elytral morphology, with a distinct depression around the scutellum, distinguishes it from all known species within the subtribe. In the male specimen, this depression results in a large spade-shaped scutellum that extends out over the elytral suture. Akrobothrus can be separated from other genera of Bothrosternina by a unique combination of characters. The antennal club is elongate and parallel-sided with 3 segments divided by procurved and recurved sutures. The lateral margins of the pronotum are costate and the prothroracic intercoxal piece has a transverse subcarinate ridge.