Toxomerus anthrax (Schiner)

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/F0B187E9-67CC-A81B-D95C-AA1C7EE3AB20

treatment provided by

ZooKeys by Pensoft

scientific name

Toxomerus anthrax (Schiner)
status

 

Toxomerus anthrax (Schiner)  Figures 1529

Mesogramma anthrax  Schiner 1868: 350. Type Locality: South America [ST 3♂, 3♀, NMW].

Mesogramma vitrescens  Hull 1930: 142. Type locality: Colombia, Magdalena, Aracataca [HT ♂, ANSP].

Mesogramma anthrax  var. flammaria Hull 1943: 27. Type locality: Honduras, Puerto Castilla [HT ♂, unknown].

Differential diagnosis.

Male and female with medial black facial vitta, but in males does not continue laterad or dorsad antennal bases. Scutum black laterally except postpronotum yellow and notopleuron sometimes with a small yellow vitta sublaterally, not on the most lateral margin. Wing extensivey microtrichose with small bare area on both sides of vein M on the basal portion of cell bm, and costal cell bare very basally or along vein SC (posterior margin). Abdomen black, terga 3-5 sometimes dark brown to yellowish-orange, with or without yellow lateral margins; shiny, without pollinose markings.

Toxomerus anthrax  is similar to Toxomerus circumcinctus  but the last has the notopleuron entirely yellow and postalar callus yellowish and the scutellum black with a well-defined broad yellow margin. Male genitalia are different.

Length

(5): body, 6.0-7.2 (6.6) mm; wing, 4.8-5.5 (5.2) mm.

Distribution.

Costa Rica, Venezuela, Colombia, Ecuador, Guyana*, Peru*.

Material examined.

2♂ syntypes, 28♂ 17♀.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Toxomerus