Illustrated identification key to females of the genus Sabethes Robineau-Desvoidy recorded from Brazil (Diptera: Culicidae), in dichotomous and interactive formats, including an updated list of species and new records for the states.

Female mosquitoes of the genus Sabethes Robineau-Desvoidy, 1827 are implicated in the transmission of several arboviruses, including yellow fever virus. Here, we present an illustrated species identification key for females of the genus Sabethes recorded in Brazil, except Sa. nitidus Theobald, 1901 and Sa. harbachi Nascimento-Pereira, Guimares, Loureno-de-Oliveira & Motta, 2021 as only the males of these species are known. The key is available in dichotomous and interactive formats. An updated list of the Sabethes species of Brazil and new occurrence records for the states of the country are provided. The type localities of four speciesSa. glaucodaemon (Dyar & Shannon, 1925), Sa. amazonicus Gordon & Evans, 1922, Sa. belisarioi Neiva, 1908 and Sa. soperi Lane & Cerqueira, 1942are corrected or restricted.

Redescription of Wyeomyia (Decamyia) felicia (Dyar amp; Nez Tovar, 1927) and description of a new species of the subgenus from Trinidad (Diptera: Culicidae).

Mosquito species of the subgenus Decamyia Dyar, 1919 of genus Wyeomyia Theobald, 1901 are known to have immature stages mostly associated with Heliconia plants. Currently, the subgenus includes five species, some of which are poorly characterized. Here, we redescribe and illustrate the larval, pupal and adult life stages of Wy. felicia (Dyar Nez Tovar, 1927). In addition, Wyeomyia monticola, a new species of Decamyia from Trinidad, close to Wy. felicia, is described. The new species can be distinguished by morphological characters of the male genitalia, larva and pupa.

A new species of Wyeomyia (Diptera: Culicidae) from Heliconia flower bracts in northern South America.

A new species of the genus Wyeomyia, Wyeomyia (Decamyia) anthica sp. n., is described based on morphological and molecular analyses and is illustrated in larval, pupal and adult life stages. Among the four valid species of the subgenus Decamyia, the new species is closest to Wy. ulocoma (Theobald, 1903), from which it can be distinguished by morphological characters of the male genitalia, larval and pupal stages, and mitochondrial cytochrome c oxidase 1 gene sequence. Wyeomyia ulocoma is recorded from Brazil for the first time.

High Speed Video Documentation of the Mosquito Sabethes albiprivus Egg-Catapulting Oviposition Behavior (Diptera: Culicidae).

The oviposition behavior of mosquitoes varies between species. We documented the unusual mechanism of egg laying in the mosquito Sabethes albiprivus Theobald with the aid of high speed video recordings in the laboratory. A sapucaia (Lecythis pisonis Camb.) nut oviposition trap, described herein, was used to simulate a tree hole with a small opening, which is the natural larval habitat of Sa. albiprivus. We showed that females approach the opening and perform a sequence of rapid, short up-and-down flights before egg laying. At this time, the egg is already visible externally, being held at the very tip of the abdomen. Females catapult one egg at a time by rapidly curling their abdomen downward, sending the egg through the opening while their legs are positioned in different configurations throughout the event. The estimated velocity of the catapulted eggs was almost 1 m/s.

The subgenus Dendromyia Theobald: a review with redescriptions of four species (Diptera: Culicidae)

A morphological study of larval, pupal and adult life stages (including genitalia characters) was performed in order to evaluate the classification of the subgenus Dendromyia, genus Wyeomyia Theobald. Six species are included: Wy. ypsipola Dyar, Wy. jocosa (Dyar & Knab), Wy. testei Senevet & Abonnenc, Wy. complosa (Dyar), Wy. luteoventralis Theobald and Wy. trifurcata Clastrier, the first four of which are redescribed. The descriptions include illustrations of the male and female genitalia, fourth-instar larva and pupa. The result firmly supports Dendromyia as a monophyletic group, with well defined characters. Keys for the identification of all life stages of species included in Dendromyia are provided.

Preliminary evaluation of the genetic relatedness of three species of the subgenus Dendromyia Theobald and other species of the genus Wyeomyia Theobald (Diptera: Culicidae)

An eletrophoretic analysis of three species of the subgenus Dendromyia (Wyeomyia luteoventralis, Wy. ypsipola and Wy. testei) and three species belonging to different groups in the genus Wyeomyia (Wy. negrensis, Wy. mystes and Wy. confusa) was performed. Eight enzyme loci were analysed. High values of genetic identity were detected among the species of the subgenus Dendromyia: Wy. luteoventralis, Wy. ypsipola and Wy. testei (mean value 0.63). On the other hand, low values of genetic identity were observed among Wy. negrensis, Wy. mystes and Wy. confusa (mean value 0.23), suggesting that they belong, at least, to distinct subgenera within the Genus Wyeomyia. The UPGMA phenogram revealed the grouping of the Dendromyia species, while the others clustered at lower identity levels.

Wyeomyia staminifera, a new species of mosquito from Brazil (Diptera: Culicidae)

Wyeomia staminifera n. sp. is described from specimens collected into the forest of the Amazon and Southeast Regions of Brazil. The description includes illustrations of female and male genitalias and chaetotaxy of pupa and larva. Wy. staminifera is closely related to Wy. aporonoma, but they are distinguishable in all stages

Anopheline species: some of their habits and relation to malaria in endemic areas of Rondônia State, Amazon region of Brazil

In view of recent studies incriminating several species of anophelines, besides Anopheles darlingi, as malaria vectors in the Brazilian Amazon, we performed an anopheline survey in four localities - Ariquemes, Cujubim, Machadinho and Itapoä do Oeste - in Rondônia, the most malarious State in the Country. Twenty species were found. An. darlingi was, by far, the dominant species and the only one whose density coincided with that of malaria. On human baits it was more numerous in the immediate vincinity of houses than indoors whre, however, it was almost the only species encountered. On both situations it fed mostly at sunset and during the first half of the night. It was less numerous far from houses and scarce inside the forest. Other species (An. triannulatus, An. evansae, An. albitarsis, An. strodei) appeared in appreciable numbers only in Ariquemes, both in areas with and without malaria. The remaining species were scanty. An. darlingi was confirmed as the primary local vector