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));

This paper documents the robber fly fauna collected in lowland rainforest in the southwesternmost part of French Guiana (Mitaraka). A total number of 146 asilid specimens were collected during the Mitaraka 2015 survey. These asilids represent six subfamilies, 23 genera, 16 described species, 28 morphospecies, and first records of 12 genera and 29 species for French Guiana. The subfamily Laphriinae Macquart, 1838 is clearly best represented with 14 genera and 28 species (especially Atomosiini Lynch Arribálzaga, 1882 with nine genera and 18 species), followed by Leptogastrinae Schiner, 1862 with three genera and seven species, Asilinae Latreille, 1802 with three genera and four species, Ommatiinae Hardy, 1927 with one genus and three species and Dasypogoninae Macquart, 1838 and Trigonomiminae Enderlein, 1914 with one species each. Eighteen and 11 species were collected as singletons or doubletons respectively, accounting for about 2/3 of all species observed. Pilica erythrogaster (Wiedemann, 1828) and Hybozelodes dispar (Hermann, 1912) (both Laphriinae) were collected in the largest numbers, but appeared to be restricted to a few sites. A six meter long Malaise trap yielded the largest diversity and highest numbers of asilids, accounting for over 2/ 5 of all species collected. Also the SLAM traps, the light trap and sweep netting were quite productive. A checklist of the French Guianan Asilidae is provided.

Two new species of the Neotropical genus Leinendera Carrera, 1945, Leinendera carrerai sp. n. and Leinendera mnrj sp. n., and the female of Leinendera achaeta Camargo, Vieira, Köhler & Rafael, 2016 are described from Brazil. The habitus, wing, male terminalia and female terminalia for the latter species are described and illustrated. The female terminalia of Leinendera rubra Carrera, 1945 is also illustrated. An identification key for the five Leinendera species and a distribution map with new records are provided.

The third species of the Neotropical genus Leinendera Carrera, 1945, Leinendera achaeta sp. n., is described from Rio Grande do Sul state, Brazil. The habitus, wing and male terminalia are described and illustrated, and a key to the three Brazilian species is provided.

ABSTRACT. Ommatius erythropus (Engel, 1885). An identification key is presented to the Ommatius costatus species group.A map with the geographic records is provided.

The male of Smeryngolaphria gurupi Artigas, Papavero & Pimentel, 1988 and the female of Smeryngolaphria taperignae Artigas, Papavero & Pimentel, 1988 are described for the first time. The habitus, thorax, abdomen, male and female terminalia with external and internal structures are illustrated and described. The external and internal structures of the male and female of Smeryngolaphria gorayebi Artigas, Papavero & Pimentel, 1988, Smeryngolaphria maculipennis (Macquart, 1846) and Smeryngolaphria numitor (Osten Sacken, 1887) are described and illustrated, Smeryngolaphria numitor for the first time. A map with the new records is provided.

The third instar larva and puparium of Gastrops willistoni Cresson (Diptera: Ephydridae), preying on eggs in a foam nest of Leptodactylus knudseni Heyer (Anura: Leptodactylidae), in a central Amazonian dryland forest (Brazil) are described for the first time. The fusiform larva has a short breathing tube, its anterior spiracles are fan-shaped and posterior spiracles with three spircular openings. Pupa is ovoid with a broad anterior margin and bifurcate posterior tip. The taxonomic relationship of the frog egg predators, Gastrops Williston and Typopsilopa Cresson, are discussed.

This work analyzes the status of Peruvian species of Ctenodontina Enderlein, provides the description of the hitherto unknown female of Ctenodontina mochica Lamas, and proposes the revalidation of Ctenodontina carrerai (Hull) stat. rev. (currently regarded as a junior synonym of Ctenodontina maya Carrera & d’Andretta). Additionally, some comments about taxonomy, diagnostic features of male terminalia and distribution of four Peruvian Ctenodontina species, including a modification to the existing key to known species and a map updating their distribution records are given. We report Pachitea Melichar (Hemiptera: Cicadellidae) as prey of Ctenodontina nairae Vieira.