Toxomerus laenas (Walker)

Mengual, Ximo, 2011, Black-tie dress code: two new species of the genus Toxomerus (Diptera, Syrphidae), ZooKeys 140, pp. 1-26: 1

publication ID

http://dx.doi.org/10.3897/zookeys.140.1930

publication LSID

lsid:zoobank.org:pub:80638044-3BF5-4EDC-9E07-D000DE4ABC25

persistent identifier

http://treatment.plazi.org/id/F3AA219F-0F96-27D4-B12C-FF514871B2C8

treatment provided by

ZooKeys by Pensoft

scientific name

Toxomerus laenas (Walker)
status

 

Toxomerus laenas (Walker)  Figures 1225

Syrphus barbulus  Walker 1852: 238. Type locality: Brazil [HT ♀, BMNH].

Syrphus laenas  Walker 1852: 241. Type locality: Brazil [HT ♂, BMNH].

Mesogramma nitidiventris  Curran 1930: 9. Type locality: Brazil, Espirito Santo, Vitoria [HT ♂, AMNH].

Mesogramma vitrea  Hull 1941: 45. Type locality: Brazil, São Paulo, Juquia [HT ♂, CNC].

Differential diagnosis.

Species with yellow face in male and female with a medial, very broad, black vitta, gena black. Scutum black, green-gray pollinose with a medial white pollinose vitta, dark laterally. Postpronotum black, sometimes brownish posteriorly. Scutellum black, sometimes with apical margin yellow, pale pilose. Wing bare on anterior margin of cells R, BM and CuP and cell R1 basally. Abdomen shiny black, pale pilose; sometimes becoming reddish-brown apically. Male genitalia with postanal process short, little distinct, much less than half as long as surstylus.

Length

(5): body, 6.2-6.8 (6.6) mm; wing, 5.7-6.1 (5.8) mm.

Distribution.

Venezuela, Brazil, Paraguay*.

Material examined.

♂ holotypeof nitidiventris, Non-type material: 12♂ 9♀.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Toxomerus