Helina vilissima Hennig

Michelsen, Verner, 2023, Macaronesian Muscidae (Diptera). IV. The genus Helina Robineau-Desvoidy, and description of the male of Spilogona maderensis Michelsen, Zootaxa 5293 (2), pp. 251-276 : 270

publication ID	https://doi.org/10.11646/zootaxa.5293.2.3
publication LSID	lsid:zoobank.org:pub:47EF72B0-A13B-48FD-AF07-72102457E518
DOI	https://doi.org/10.5281/zenodo.7960204
persistent identifier	https://treatment.plazi.org/id/B41A7D60-FFAD-FFF1-00AD-124B93A4F916
treatment provided by	Plazi (2023-05-22 23:23:38, last updated 2024-11-26 08:03:50)
scientific name	Helina vilissima Hennig
status

Treatment

12. Helina vilissima Hennig View in CoL

( Figs 12A–C View FIGURE 12 )

Helina vilis Stein View in CoL ; Becker 1908b: 194 (Madeira); Tiensuu 1938: 6 (Madeira).

Helina vilissima Hennig View in CoL ; Hennig 1958: 226ff. (Madeira); Hennig 1978: 5 (Madeira).

Material examined. MADEIRA: [ MZH]. Rabaçal, 1080m, 3♁, 1♀ 17.vii–4.viii.1935 (O. Lundblad); Pico Ruivo, 1♀ 19.vi.1957 (H. Lindberg); Queimadas, 4♀ 24‒26.vi.1957 (H. Lindberg); Poiso ‒ Arieiro, 1♀ 24‒26.vi.1957 (H. Lindberg) .

Description. Medium sized, wing length 6.0–7.0 mm (n = 5). Male: Ground colour dark, extensively greyish pruinose, except for ochre yellow basal antennal segments, ochre yellow legs (apart from tarsi and fore coxa) and sternite V lobes; usual pattern of four dark stripes visible on mesonotum in posterior view; wing with both cross-veins faintly shadowed; abdomen with traces of a median narrow stripe flanked by small, oval dark marks on tergites III and IV. Eyes bare. Longest aristal branches longer than width of postpedicel. Male frons at narrowest point 0.8–1.5 times as wide as diameter of anterior ocellus with contiguous or narrowly separated fronto-orbital plates. Dorsocentral setae 2 + 3; presutural acrostical field with setulae only arranged in 2–4 irregular rows; prealar seta only slightly longer and stronger than adjacent ground setulae; katepisternal setae 2 + 2. Vein C with dorsal setulae somewhat irregular or (rarely) absent. Fore tibia with 1 p seta; mid tibia with 0 ad and 2–3 pd setae; hind femur with 1–3 short pv seta on middle third; hind tibia with 1 av, 3 ad setae and 1 pd seta on basal third. Abdomen relatively long and slender, conical; sternite V and hypopygium as in Figs 12A–C View FIGURE 12 . Female: Apart from usual sexual differences of the head and abdomen differing from the male by having a complete row of dorsal setulae on vein C, fore tibia with a short ad seta and hind femur without pv setae.

Distribution. Endemic to Madeira.

Taxonomy. See under Helina atlantica .

References

Becker, T. (1908 b) Dipteren der Insel Madeira. Mitteilungen aus dem Zoologischen Museum in Berlin, 4,181 - 206. https: // doi. org / 10.5962 / bhl. title. 9273

Hennig, W. (1978) Uber Muscidae (Diptera) der Kanarischen Inseln. Stuttgarter Beitrage zur Naturkunde, A (Biologie), 311, 1 - 12. [Posthumous paper.]

Tiensuu, L. (1938) Die Arthropodenfauna von Madeira nach den Ergebnissen der Reise von Prof. Dr. O. Lundblad Juli - August 1935. XII. Diptera: Muscidae und Tachinidae. Arkiv f ˆ r Zoologi, 30 A, 22, 1 - 11.