During this study, Coccinellidae were collected and observed at 25 sites located along the coast and inland of the island of Fuerteventura during 2016 and 2017. A total of 2825 Coccinellidae specimens belonging to 22 species was recorded, of which 11 species are newly recorded from Fuerteventura. In the case of three species taxonomical decisions are proposed. Scymnus incisus (Har. Lindberg, 1950) is transferred to the genus Nephus Mulsant and placed in the nominate subgenus as Nephus (Nephus) incisus (Har. Lindberg, 1950), comb. nov. Scymnus medanensis Eizaguirre, 2007, is redescribed and placed in the subgenus Pullus Mulsant. Coccinella algerica Kovář, 1977, is synonymized with Coccinella septempunctata Linnaeus, 1758, syn. nov. We propose retaining the taxonomic distinction of the North African and Canarian populations of this species as the subspecies Coccinella septempunctata algerica Kovář, stat. nov. Nephus peyerimhoffi (Sicard, 1923) is deleted from the list of ladybird beetles inhabiting the Canary Islands.

Horniolus Weise is an Asian genus of ladybird beetles up to now comprising 15 species with the greatest diversity in China. A new species, H. minutus sp. nov., is described and illustrated. The position of the genus within the modern classification of Coccinellidae is discussed, and its transfer from the tribe Scymnini to Platynaspini is proposed.

A review of the Neotropical Coccinellidae in the Prague Museum, also including to a lesser extent material from other collections, has led to the description of 14 new species from Brazil, Ecuador, Panama, Peru, and Venezuela, two new combinations and 16 first records for countries. The new species described are Cyrea napoensis, Dilatitibialis manaus (Brachiacanthini), Neaporia chucanti, Prodilis saopaulo, P. pastaza and P. qedi (Cephaloscymnini), Siola karpish (Chnoodini), Calloeneis veraguas (Cryptognathini), Diomus chiriqui, D. panamensis and D. sekerkai (Diomini), Toxotoma venezuelae and T. aguascalientes (Epilachnini) and Nexophallobase panamensis (Stilochotidini) nov. spp. The new combinations are Sidonis vianai (for Neorhizobius vianai González, 2013) and Neda areolata (for Neocalvia areolata Gorham, 1982) comb. nov. First country records are Azya exuta Gordon for Ecuador, Chilocorus nigrita (Fabricius) for French Guiana, Harpasus zonatus (Mulsant) for Paraguay, Chnoodes separata Mader for Paraguay, Coelaria erythrogaster Mulsant for Surinam, Sidonis vianai (González) for Brazil, Coleomegilla occulta González for Bolivia, Neda callispilota (Guerín-Méneville) for Uruguay, Epilachna bistrisignata (Mader) for Peru, Epilachna dives Erichson for Bolivia, Hyperaspis pseudodonzeli Gordon & Canepari for Ecuador and French Guiana, Menoscelis saginata Mulsant for Bolivia, Zagloba beaumonti Casey for Bolivia and Venezuela and Scymnus hamatus Gordon for Panama.

Microweiseinae is a quite recently established subfamily within ladybird beetles (Coccinellidae). According to recent analyses of morphological and molecular data, it has been divided into three tribes. Members of the subfamily are distributed mostly in tropical and subtropical regions of the world. Despite several recent taxonomical studies of this group, its diversity and distribution is still not fully understood. Recent field collecting on Madeira Island resulted in the discovery of interesting specimens belonging to a yet unknown taxon, described here as Madeirodula atlantica gen. et sp. nov. Phylogenetic analysis of morphological characters indicate that the new taxon form a distinct branch within the subfamily Microweiseinae, for which we propose a new tribe Madeirodulini trib. nov. Evolutionary trends within the subfamily are discussed, and an updated key to the tribes of Microweiseinae is provided.

Research on the fauna of beetles (Coleoptera) of the Canary Islands has a long tradition, which enables tracking changes in their species composition and arrival of new species. In this paper, we provide new faunistic data on the ladybird beetles (Coccinellidae) recorded on Gran Canaria, one of the central islands of the archipelago, and then analyze available information on the Gran Canarian ladybird fauna from geographical and historical points of view. The field survey resulted in recording 1402 ladybird individuals belonging to 30 species. Ten of these species were new to Gran Canaria and three of them, Chilocorus bipustulatus (Linnaeus), Nephus bisignatus (Boheman), and Nephus ulbrichi Fürsch, had not previously been reported to be on any of the islands of the Canarian archipelago. Tetrabrachys tinerfensis (Hodgson) is synonymized with T. deserticola (Wollaston). Our survey and literature reports allowed us to recognize 42 species of Coccinellidae so far recorded on Gran Canaria. Seventeen of them (40%) belonged to the Canarian endemic and subendemic species, and 21 (50%) were newcomers and presumed newcomers. Colonization of Gran Canaria and other islands of the archipelago by ladybird species of various origins seems to be a frequent phenomenon that may pose a threat to the unique communities of the native Canarian species.