Studies on Brazilian Mosquitoes. Iii. The Genus Culex*

Root, Francis Metcalf

doi:10.1093/oxfordjournals.aje.a120431

Cited by 10 publications

(10 citation statements)

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“…Comparing both ventral and dorsal divisions of the lateral plate of the male genitalia of Cx . lygrus forms 1 and 2 with that illustrated by Root (1927) , it seems that form 1 is morphologically more similar to the Magé specimen than form 2. However, in considering COI barcode sequence similarity, we can infer that specimens may belong to a single species and thus differences observed represent polymorphisms or COI barcode does not contain enough information to indicate Cx .…”

Section: Discussionsupporting

confidence: 53%

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COI barcode versus morphological identification of Culex ( Culex ) (Diptera: Culicidae) species: a case study using samples from Argentina and Brazil

Laurito

Oliveira

Almirón

et al. 2013

Mem. Inst. Oswaldo Cruz

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Sequences of the cytochrome c oxidase subunit I (COI) mitochondrial gene from adults of 22 Culex ( Culex ) species from Argentina and Brazil were employed to assess species identification and to test the usefulness of COI for barcoding using the best close match (BCM) algorithm. A pairwise Kimura two-parameter distance matrix including the mean intra and interspecific distances for 71 COI barcode sequences was constructed. Of the 12 COI lineages recovered in the Neighbour-joining topology, five confirmed recognised morphological species ( Cx. acharistus , Cx. chidesteri , Cx. dolosus , Cx. lygrus and Cx. saltanensis ) with intraspecific divergences lower than 1.75%. Cx. bilineatus is formally resurrected from the synonymy of Cx. dolosus . Cx. maxi , Cx. surinamensis and the Coronator group species included were clustered into an unresolved lineage. The intraspecific distance of Cx. pipiens (3%) was almost twice the interspecific between it and Cx. quinquefasciatus (1.6%). Regarding the BCM criteria, the COI barcode successfully identified 69% of all species. The rest of the sequences, approximately 10%, 18% and 3%, remained as ambiguously, mis and unidentified, respectively. The COI barcode does not contain enough information to distinguish Culex ( Cux. ) species.

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Section: Discussionsupporting

confidence: 53%

“…Cx. lygrus was described by Root (1927) . The type-locality is Magé, state of Rio de Janeiro, Brazil.…”

Section: Discussionmentioning

confidence: 99%

COI barcode versus morphological identification of Culex ( Culex ) (Diptera: Culicidae) species: a case study using samples from Argentina and Brazil

Laurito

Oliveira

Almirón

et al. 2013

Mem. Inst. Oswaldo Cruz

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“…Dyar & Knab once described a form, Microculex imitator, whose larvae had a subapical fusiform swelling on the siphon, as a separate species and proposed the name Culex daumasturus. Root,5 in his paper on Culex species collected mainly in the coastal lowlands of the State of Rio de Janeiro, mentions seven species of Microculex. He found Culex (Microculex) pleuristriatus very common and noted the same variation of form in C. (Microculex) imitator as was discussed by Bonne & Bonne-Wepster.…”

Section: (Plates XVII and Xviii)mentioning

confidence: 99%

Mosquitos breeding in Bromeliads, at Bahia, Brazil

Kumm¹

1933

Bull. Entomol. Res.

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Entomologists working in the American tropics have frequently noted the variety of the mosquito fauna breeding in Bromeliads. Dyar 3 mentioned at least two species of Anopheles, twenty species of Culex, and about thirty Sabethines, the larvae of which live in the water in the leaf-bases of Bromeliaceae. Peryassii 4 listed four species of Megarhinus which he said restrict their breeding entirely to Bromeliaceae, or " gravatas " as they are called in Brazil. He said that larvae of Aides (Stegomyia) aegypti were sometimes seen in Bromeliads and that they had been found eleven times in 1,194 collections from gravatas, made by Dr. Sylvio Cardoso, presumably in and around Rio de Janeiro.Because gravatas have been known to harbour A. aegypti, considerable effort has at times been expended during yellow fever control campaigns to destroy these plants. In 1931 Dr. D. Bruce Wilson, then in charge of the yellow fever control campaign in Bahia, and Dr. Nelson C. Davis suggested to the writer that it might be worth while to investigate the mosquitos breeding in Bromeliads close to houses in that city. Accordingly, it was planned to make a large number of collections in epiphytic and terrestrial Bromeliads, and to ascertain just which species of mosquitos were present and approximately how frequently A. aegypti occurred. The study could not be completed on the scale originally intended because more urgent matters demanded attention. Only 21 collections were carefully bred out and the adults identified. However, since even in this small series at least one new mosquito and several new forms were found, the results are given below.As certain of the larval forms were not yet known, it was essential, in making this study, to breed out all the adults possible. Four species of Microculex were obtained and one species of Wyeomyia. A great deal of difference was found in the relative lengths of the siphon in the various species of Microculex (see fig. 12). Culex (Microculex) imitator had a very long and slender breathing tube which identified it with the genus Culex. But Culex (Microculex) pleuristriatus was usually black in colour and had an air-tube which was relatively short, so that it might be confused, macroscopically, with Aedes (Stegomyia) aegypti. The adult of Culex (Microculex) pleuristriatus was quite distinctive from Stegomyia, but, as Bonne & Bonne-Wepster 1 have pointed out, the adult of Culex (Microculex) imitator is " a beautiful mosquito when undamaged, with thoracic markings slightly resembling those of Aedes aegypti." This species seems to be subject to considerable variation, during both the adult and the larval stages. Dyar & Knab once described a form, Microculex imitator, whose larvae had a subapical fusiform swelling on the siphon, as a separate species and proposed the name Culex daumasturus.Root, 5 in his paper on Culex species collected mainly in the coastal lowlands of the State of Rio de Janeiro, mentions seven species of Microculex. He found Culex (Microculex) pleuristriatus very common and noted the same...

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“…-Culex oedipus was described by Root (1927), was put in the synonymy of Cx. phlogistus by Dyar (1928), and resurrected by Rozeboom and Komp (1950).…”

Section: Introductionmentioning

confidence: 99%