Published August 5, 2020 | Version v1
Taxonomic treatment Open

Victoriana melanorrhina Miranda & Skevington & Marshall 2020

  • 1. jhskevington @ gmail. com; https: // orcid. org / 0000 - 0002 - 1445 - 9870
  • 2. University of Guelph Insect Collection and Insect Systematics Laboratory - School of Environmental Sciences - University of Guelph. Guelph, Ontario, Canada.

Description

Victoriana melanorrhina species group (Victoriana sensu stricto)

Description. Body brown. Head. Face narrow to normal (between 1/4 to ~1/3 of head width), entirely pale or with medial dark stripe; tubercle dorsally positioned. Antennal insertions confluent. Frons ~1/3 of head width. Female ocellar triangle ~1 ocellus-width from lateral eye margin. Dorsal occiput with one row of pile; *ventral occiput with rows of pile distanced from eye margin (Fig. 88). Thorax. Scutum dark, sometimes pale laterally, and without distinct anterior row of pile. Scutellum pale to mostly dark; *sub-scutellar fringe conspicuous, but pile sparse. Anterior anepisternum pilose. Katatergite with short microtrichia that gives the sclerite a ‘velvet’ appearance. Metaepisternum pilose. Metasternum bare. Upper calypter margin with shorter to much shorter pile than pile on the ventral calypter margin. *Metafemur with erect pile on its baso-posterior surface (Fig. 90). Wing. Alula absent, or much reduced (narrower than c) (Fig. 91). Wing hyaline or with anterior dark margin on females, light brown on males; vein M1 strongly oblique, ending far from where it leaves M (Fig. 48). Abdomen. Abdomen parallel-sided, elongated, slightly petiolate; *terga 4 and 5 with sub-basal, pale, small, banded maculae (Fig. 48). Terminalia. Female tergum 7 as pair of sclerotized stripes (Fig. 100); tergum 8 as a narrow triangular sclerotization (Fig. 100). *Male postgonite elongated, with a dorsal acute extremity and a ventral acute extremity (that may be further extended anteriorly) (Figs 54 and 55); *surstylus elongated and finger-like, ventral surface with setae and setulae intermixed (Figs 51 and 52); basiphallus teardrop-shaped, distiphallus membranous with dorsal sclerotized triangular region (as in Fig. 97).

Included species (3). V. laudabilis (Williston, 1891) comb. nov. [1b], V. lugubris (Philippi, 1865) comb. nov. [2, 3], V. melanorrhina (Philippi, 1865) comb. nov. [2, 3, 4].

Notes

Published as part of Miranda, Gil Felipe Gonçalves, Skevington, Jeffrey H. & Marshall, Stephen A., 2020, New generic concepts for orphaned lineages formerly treated as part of the genus Ocyptamus Macquart, 1834 (Diptera, Syrphidae), pp. 151-174 in Zootaxa 4822 (2) on page 163, DOI: 10.11646/zootaxa.4822.2.1, http://zenodo.org/record/4401369

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Linked records

Additional details

References

  • Williston, S. W. (1891 - 1892) Fam. Syrphidae. Biologia Centrali-Americana, Insecta: Diptera, III, 1 - 56 + 57 - 72 + 73 - 78, pls. 1 + 2, figs. 1 - 12.
  • Philippi, R. A. (1865) Aufzahlung der chilenischen Dipteren. Verhandlungen der Kaiserlich-Koniglichen Zoologisch-Botanischen Gesellschaft in Wien, 15, 595 - 782. https: // doi. org / 10.5962 / bhl. title. 9295