Toxomerus hieroglyphicus (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/4903B229-A07A-A627-D3E5-631767C5B0E4

treatment provided by

ZooKeys by Pensoft

scientific name

Toxomerus hieroglyphicus (Schiner)
status

 

Toxomerus hieroglyphicus (Schiner)  Figures 1122

Mesogramma hieroglyphica  Schiner 1868: 348. Type locality: South America [LT ♂, NMW].

Differential diagnosis.

Species with yellow face in male, sometimes with a brownish macula on tubercle. Scutum black, bronze pollinose medially and a medial bluish pollinose vitta, with a continuous lateral yellow vitta from postpronotum to scutellum, narrowed on notopleuron and supra-alar area. Scutellum black with yellow lateral and apical margins. Wing partially bare basally, costal cell bare on basal half or a bit more. Abdomen with medial yellow markings on terga 3 to 5; tergum 1 with yellow lateral margins, tergum 2 black with a yellow macula on anterolateral half extending narrowly towards the center of the tergum, and with a roundish black pollinose macula in the center; tergum 3 and 4 black with anterolateral yellow maculae and two submedial curved yellow vittae that divides a central black pollinose area; tergum 5 black with anterolateral yellow maculae and two submedial short yellow vittae.

Toxomerus hieroglyphicus  is close in the key to the two new species, Toxomerus picudus  and Toxomerus hauseri  , but they are very different as already noted in the key.

Length

(4): body, 5.6-6.2 (5.9) mm; wing, 5.0-5.7 (5.2) mm.

Distribution.

Venezuela, Ecuador, Colombia*.

Material examined.

♂ lectotype, ♂ paralectotype, 3♂.

Remarks.

Toxomerus hieroglyphicus  has usually yellow markings in the center of the abdomen. Thus, it should not be included in the present key. However, the study of a dark specimen prompted me to tentatively include this species in case darker specimens might appear with completely black abdomen with lateral yellow maculae.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Toxomerus