16.9 km 2 is the main island (Lopes and Ulbrich, 2015), and the remaining area is distributed among 20 smaller islands, of which Rata Island is the largest with 0.8 km 2. The archipelago has suffered major ecological disturbances due to several human interventions. In 1737, fortifications were built, and the archipelago was transformed into a penal colony for almost 200 years. During this period, a large part of the native vegetation was devastated while exotic plants and animals were introduced to serve as food (Teixeira et al., 2003; Serafini et al., 2010). The human population in the archipelago increased significantly in 1942 through military occupation (i.e., World War II). Afterwards, significant changes were observed in the archipelago due to: • Several insecticide applications campaigns (i.e., DDT) for mosquito-control; • Wild animal introductions, such as the Teju lizard (Salvator merianae Duméril & Bibron) and the Mocó cavy (Kerodon rupestris Wied-Neuwied); • Release of birds seized in trade fairs and public markets of Recife (i.e., Saffron finch (Sicalis flaveola (Linnaeus)), House Sparrow (Passer domesticus (Linnaeus)), and the White-bellied seedeater (Sporophila leucoptera (Vieillot));

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A new genus and two new species of Sminthurinae are described. Keratosminthurus tapigu gen. nov. sp. nov. and K. calamitosus sp. nov. show a combination of features that redefines the subfamily Sminthurinae, such as a pair of sminthuroid chaetae, unguis without cavity, nine apical chaetae on tibiotarsus, 11 or more anterior dental chaetae, fourth antennal segment clearly subdivided into many (18 or more) subsegments, and asymmetric apex of mucro. The new genus also presents a striking sexual dimorphism, with modifications on male apical organ of antennal segment III, spines on the clypeus and special organs on the interocular area.

Soil life supports the functioning and biodiversity of terrestrial ecosystems. Springtails (Collembola) are among the most abundant soil arthropods regulating soil fertility and flow of energy through above- and belowground food webs. However, the global distribution of springtail diversity and density, and how these relate to energy fluxes remains unknown. Here, using a global dataset representing 2470 sites, we estimate the total soil springtail biomass at 27.5 megatons carbon, which is threefold higher than wild terrestrial vertebrates, and record peak densities up to 2 million individuals per square meter in the tundra. Despite a 20-fold biomass difference between the tundra and the tropics, springtail energy use (community metabolism) remains similar across the latitudinal gradient, owing to the changes in temperature with latitude. Neither springtail density nor community metabolism is predicted by local species richness, which is high in the tropics, but comparably high in some temperate forests and even tundra. Changes in springtail activity may emerge from latitudinal gradients in temperature, predation and resource limitation in soil communities. Contrasting relationships of biomass, diversity and activity of springtail communities with temperature suggest that climate warming will alter fundamental soil biodiversity metrics in different directions, potentially restructuring terrestrial food webs and affecting soil functioning.