Enchenopa Amyot & Serville, 1843 is a diverse treehopper genus widespread across the New World. We describe two new Enchenopa species from northwest Ecuador: Enchenopa gennyaesp. nov. from urban forest remnants at the foothills of the Andes cordillera and Enchenopa chocoandinasp. nov. from secondary montane forests. Enchenopa gennyaesp. nov. is placed in the E. biplaga species group and is distinguished by the sexual dimorphism of the pronotal horn and lateral carina shape, the straight metopidium, 2–4 accessory carinae and the whitish dorsal spot and subapical band. Enchenopa chocoandinasp. nov. belongs to the E. andina species group and is diagnosed by its reddish central carina and posterior pronotal process apex, presence of an obtuse projection rather than an anterior horn, three or four irregular accessory carinae, and apical amber forewing patch. Illustrations, notes on natural history, and keys to species of the E. biplaga and E. andina species groups are also provided.

This study investigates the species richness and distribution of ladybird beetles (Coccinellidae) across various habitats on San Cristóbal Island in the Galápagos Archipelago, Ecuador. Through extensive field surveys, we catalogued nineteen species, including four previously known species (two endemics, Psyllobora bisigma and Scymnobius scalesius, and two natives, Cycloneda sanguinea and Tenuisvalvae bromelicola). We also identified nine possibly native species reported for the first time in the Galapagos islands in this study or correspond to the first voucher specimens for the island. We collected three previously reported non-native species: Cheilomenes sexmaculata, Novius cardinalis, and Paraneda guticollis. Three species belonging to the genera Stethorus, Calloeneis, and Delphastus remain undetermined, pending further taxonomic analyses. Our findings reveal a rich and complex community with notable differences in species abundance and habitat preference. Endemic species were found to be particularly scarce and restricted mainly to crops undergoing forest regeneration and deciduous forests, emphasising their vulnerability and specialised habitat requirements. The native Cycloneda sanguinea emerged as the most prevalent species, exhibiting broad ecological adaptability. Non-native species, like Cheilomenes sexmaculata, were predominantly found in disturbed habitats, with some showing early signs of spreading into more natural environments, raising concerns about their potential impact on local biodiversity. These findings contribute valuable knowledge to understanding Coccinellidae diversity on San Cristóbal Island and highlight the importance of continued monitoring, particularly in the face of ongoing environmental change and the introduction of non-native species. This study underscores the need for targeted conservation efforts to protect the unique and fragile ecosystems of the Galápagos Archipelago.

We present a taxonomic revision of the Andean treehopper genus Gelastogonia Kirkaldy, 1904. After reviewing all the type material of the genus, we transfer Gelastogonia parva Sakakibara to Ennya parva (Sakakibara) comb. nov. and designate a Lectotype for Gelastogonia bicristata (Stål). The genus is redescribed, along with the species Gelastogonia bicristata, Gelastogonia pulchella (Funkhouser), and Gelastogonia rufipes (Fairmaire) for which new distributional records are also provided. Additionally, sexual dimorphism is reported in the genus for the first time. Three new species are described from Ecuador: Gelastogonia andyi sp. nov. Montalvo-Salazar, Rueda-Rodríguez & López-García from the Subandean mountain range Cordillera del Cóndor, Gelastogonia cosanga sp. nov. Montalvo-Salazar, Rueda-Rodríguez & López-García from the Quijos Valley in the northeastern Andes, and Gelastogonia tandayapa sp. nov. Montalvo-Salazar, Rueda-Rodríguez & López-García from the northwestern Andes. Two new species are described from Colombia: Gelastogonia nubicola sp. nov. Flórez-V from the northern of the Cordillera Central and the Cordillera Occidental, and Gelastogonia xanthonota sp. nov. Flórez-V from the PNN Los Nevados. Keys to species for males and females, illustrations of each species, and distributional maps are provided.