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This study is the first attempt to assess the diversity of beetles (Coleoptera) in terrestrial moss cushions on three West Indian islands (Hispaniola, Jamaica, and Puerto Rico) based on 10 years of moss sampling in 18 localities. In total 1711 adult beetles were collected. They belong to 234 species from 30 families. The most species and specimen rich families are Staphylinidae (86 morphospecies and 1195 specimens), Curculionidae (61 morphospecies and 131 specimens), and Chrysomelidae (16 morphospecies and 185 specimens). In addition to basic bryobionts feeding on moss tissues, moss cushions host a diverse fauna of mycophagous and saprophagous Coleoptera together with predaceous species of beetles. Our results suggest that community composition in moss inhabiting beetles is determined both by geographical isolation processes and, to a lesser degree, by environmental variation across altitudinal gradients. This confirms that the greater relevance of geographical isolation is a common pattern in organisms with limited dispersal ability. Beetle abundance was not significantly related to either the volume of moss or the substrate. Despite being not significant (but close to), the observed trend was to higher beetle abundance in moss cushions collected on trees than in those collected on soil/rock. This may be resulting from the greater diversity of fungi and higher number of beetle fungivores associated with tree growing moss communities.

The species name Cangshanaltica fuanensis, previously published in Ruan et al. (2020), is invalid. In this paper, we described Cangshanaltica fuanensis sp. nov. from Fujian, China in order to fully meet the criteria for the publication of a new species according to the Amendment of the International Code of Zoological Nomenclature (2012).

As a result of changes in the flea beetle classification in the last 20 years, the following new combinations are proposed for West Indian flea beetles: Acallepitrix nigrita (Jacoby 1897) comb. nov., Centralaphthona crucifera (Blake 1964) comb. nov., Centralaphthona grenadensis (Jacoby 1897) comb. nov., Centralaphthona inornata (Blake 1949) comb. nov., Centralaphthona insularis (Blake 1964) comb. nov., Centralaphthona lepta (Blake 1964) comb. nov., Centralaphthona nana (Blake 1949) comb. nov., Centralaphthona ruficollis (Blake 1970) comb. nov., Centralaphthona salaisa (Bechyné 1956) comb. nov., Centralaphthona schwarzi (Blake 1949) comb. nov., Dibolia dissita (Blake 1931) comb. nov., Erinaceialtica antennata (Medvedev 2004) comb. nov., Gioia crassicornis (Baly 1877) comb. nov., Homoschema auripennis (Suffrian 1868) comb. nov., Homoschema compressa (Suffrian 1868) comb. nov., Hypolampsis ferruginea (Suffrian 1868) comb. nov., Monomacra pallens (Fabricius 1792) comb. nov., Parchicola androsensis (Blake 1946) comb. nov., Parchicola religata (Jacquelin du Val 1857) comb. nov., Syphrea pauxilla (Suffrian 1868) comb. nov. Lectotypes are designated for the following species: Cyrsylus volkameriae (Fabricius 1792), Gioia crassicornis (Baly 1877), Homoschema auripennis (Suffrian 1868), Homoschema compressa (Suffrian 1868), Hypolampsis ferruginea (Suffrian 1868), Monomacra pallens (Fabricius 1792), Syphrea pauxilla (Suffrian 1868). The following new species are described from the Dominican Republic: Cyrsylus lasabejas sp. nov. (Sierra de Baoruco, Las Abejas); Dibolia sierradebaoruco sp. nov. (Sierra de Baoruco, Casete 1); Gioia elcachote sp. nov. (Barahona Province, El Cachote); Syphrea baoruco sp. nov. (Sierra de Baoruco, Las Abejas). New species and representatives of the genera – recipients of new combinations are illustrated. Key words: Dominican Republic, habitat, host plant, leaf beetles, Neotropical Region, new taxa

West Indian genera of the flea beetle subtribe Oedionychina Chapuis, 1875 are reviewed. Two new genera and one new species are described: Argusonychis Konstantinov, Van Roie, & Furth gen. nov. with Argusonychis clarki Konstantinov, Van Roie & Furth sp. nov. as the type species (Bahamas); and Ciguapanychis Konstantinov, Van Roie & Furth gen. nov. with Alagoasa bicolor (Linnaeus, 1767) as the type species (Puerto Rico). An illustrated key to the genera found in the West Indies is provided. Each genus is illustrated with images of external and internal morphology, including thoracic structures, metendosternite, and female and male genitalia. Asphaera subfasciata Clark, 1860 is designated as the type species for Asphaera Duponchel & Chevrolat in d’Orbigny, 1842. The genus Ptena Chevrolat, 1836 is considered a long-overlooked senior synonym of Asphaera; the use of Asphaera is maintained. The lectotypes are designated for: Chrysomela albicollis Fabricius, 1787, Oedionychis crucipennis Suffrian, 1868, and Haltica decipiens Klug, 1829. Pleurasphaera Bechyné, 1958 is recognized as an objective junior synonym of Litosonycha Chevrolat, 1836 since these two generic names share the same type species, Haltica decipiens Klug, 1829. Oedionychis punctipennis Blake, 1971 is synonymized with Alagoasa sharpi (Jacoby, 1897). The following 17 new combinations are proposed: Alagoasa lunata (Fabricius, 1801), Alagoasa sharpi (Jacoby, 1897), Alagoasa smithi (Jacoby, 1897), Argusonychis megalopia (Blake, 1939), Argusonychis orientensis (Blake, 1959), Argusonychis zayasi (Blake, 1959), Asphaera amplilimbata (Blake, 1959), Asphaera cristalensis (Blake, 1959), Ciguapanychis bicolor (Linnaeus, 1767), Ciguapanychis dimidiatus (Olivier, 1808), Ciguapanychis fasciatus (Fabricius, 1798), Ciguapanychis jamaicensis (Jacoby, 1894), Ciguapanychis pseudofasciatus (Blake, 1940), Ciguapanychis viridipennis (Blake, 1971), Kuschelina pseudothoracica (Blake, 1945), Omophoita turquino (Zayas, 1988), and Walterianella gurneyi (Blake, 1968). The following three species are removed from synonymy and restored to species status as new combinations: Ciguapanychis cinctus (Olivier, 1808), Ciguapanychis lantanus (Blake, 1928), and Ciguapanychis purpurellus (Blake, 1940).

Two new species of bryobiont flea beetles (Coleoptera: Chrysomelidae: Galerucinae: Alticini) from Dominican Republic are described and illustrated: Andersonaltica neiba sp. nov. (Sierra de Neiba) and A. villabarrancoli sp. nov. (Sierra de Baoruco). New species are compared morphologically with each other. Unusual intraspecific variability of A. villabarrancoli is reported. To obtain additional data in understanding the similarities between the specimens of A. villabarrancoli, we sequenced the Cytochrome oxidase I barcode region of adults and larvae. In all cases, the sequences are identical suggesting that the specimens in questions are conspecific. Key words: Bryobionts, COI barcodes, flea beetles, Monoplatina, moss cushions, species boundaries

New genus Suffrianaltica gen. nov. is described to accommodate Chaetocnema tuberculata (Suffrian, 1868). It is illustrated and compared to Apraea Baly, 1877, Glyptina LeConte, 1859, and Guadeloupena Bechyne, 1956 and their distinguishing characters are illustrated. The lectotype of Chaetocnema tuberculata (Suffrian, 1868) is designated. Key words: Neotropical region, Cuba, new genus, lectotype designation, Suffrian

Twenty-three observations of leaf beetles and their feeding damage are reported. Masquerade is found in 15 observations. In 12 observations dark colored beetles were making obvious dark colored damage. Light colored beetles of three species were observed making light colored damage. Masquerade in Chrysomelinae is reported here for the first time. In Galerucinae, masquerade is recorded for the first time for the species of Calomicrus Stephens and Orthocrepis Weise. New host plants are recorded for: Longitarsus hittita Biondi - Anchusa azurea Mill.; Longitarsus audisioi Biondi - Symphytum asperum Lepech.; and Chaetocnema tibialis (Illiger) - Chenopodium rubrum L.

A new species of previously monotypic genus of flea beetles (Coleoptera: Chrysomelidae: Galerucinae: Alticini), Bonfilsus Scherer 1967, is described from the Dominican Republic. This is the first record of Bonfilsus from the island of Hispaniola. The new species is compared to the only known species of the genus [B. subpubenscens (Bechyne)] and its distinguishing features as well as other morphological characters are illustrated and described.

The following new species of Ivalia Jacoby 1887 are described from the mount Kinabalu (Sabah, Malaysia): Ivalia besar sp. nov. , I. biasa sp. nov. , I. fulvomaculata sp. nov. , I. haruka sp. nov. , I. marginata sp. nov. , I. minutissima sp. nov. , I. nigrofasciata sp. nov. , I. pseudostriolata sp. nov. , I. rubrorbiculata sp. nov. , I. striolata sp. nov. .

A new genus of flea beetles (Allenaltica gen. nov.) with a new species, Allenaltica flavicornis, sp. nov. from the Philippine Islands (Mindanao) is described, illustrated and compared with related genera.

The xerophilous vegetation with characteristic insect assemblages is described in the main agricultural regions and native landscapes of Turkey. Long term intensive investigations documented vast biotic degradation of soil and vegetation (commonly referred to as desertification) by overgrazing, construction, recreation etc. Two main types of xeric landscape are under investigation: 1) natural highly specific deserts, semi-deserts, dry mountain slopes and screes; and 2) anthropogenic, newly emerged, floristically impoverished desertified areas. The presence of a multi-species insect assemblage on a xerophilous plant in certain area testifies its indigenous nature, whereas the absence of the specific consortium suggests recent plant invasion. The examples of the first case are the consortia of 3–6 species of Coleoptera, mainly Buprestidae, Chrysomelidae, and Curculionoidea, on some Apiaceae, Asteraceae, Brassicaceae, Chenopodiaceae, Ephedraceae (Ephedra spp.) and Polygonaceae (Calligonum polygonoides L.). Extreme examples of anthropogenic vegetation are overgrazed wormwood steppe and semidesert which lack usually diversified coleopterous consortia, including the most characteristic of this landscape, e.g., tenebrionids, and orthopterans. Rapid disappearance of the xerophilous complexes from the extraordinarily diversified and largely uninventoried Turkish biota makes preservation of the endangered plant and animal assemblages in different climatic zones of Turkey an urgent task.

The following 18 new species of Diabrotica are described and illustrated as a result of the synopsis of North and Central American species: D. barclayi sp. nov. , Guatemala; D. caveyi sp. nov. , Costa Rica; D. costaricensis sp. nov. , Costa Rica; D. dmitryogloblini sp. nov. , Mexico; D. duckworthorum sp. nov. , Honduras; D. hartjei sp. nov. , Panama; D. josephbalyi sp. nov. , Costa Rica; D. lawrencei sp. nov. , Mexico; D. mantillerii sp. nov. , Panama; D. martinjacobyi sp. nov. , Honduras; D. mitteri sp. nov. , Panama; D. perkinsi sp. nov. , Guatemala; D. redfordae sp. nov. , Costa Rica; D. reysmithi sp. nov. , Costa Rica; D. salvadorensis sp. nov. , El Salvador; D. sel sp. nov. , Panama; D. spangleri sp. nov. , Costa Rica; D. waltersi sp. nov. , Panama. In addition, a key to separate Diabrotica from related genera is presented.