Beckerina umbrimargo (Becker)

Disney, R. Henry L., 2004, Genera resembling Beckerina Malloch (Diptera: Phoridae), Zootaxa 518 (1), pp. 1-28 : 9-11

publication ID	https://doi.org/10.11646/zootaxa.518.1.1
DOI	https://doi.org/10.5281/zenodo.13785604
persistent identifier	https://treatment.plazi.org/id/1C4487FD-341B-7C3C-FEC0-637FFB450009
treatment provided by	Felipe (2021-06-24 17:00:24, last updated 2024-11-27 00:16:36)
scientific name	Beckerina umbrimargo (Becker)
status

Treatment

Beckerina umbrimargo (Becker) View in CoL

( Figs 1–8 View FIGURES 1–2 View FIGURES 3–6 View FIGURES 7–8 )

Phora umbrimargo Becker, 1901: 65 View in CoL .

Aphiochaeta umbrimargo (Becker) . Brues, 1903: 398.

Beckerina umbrimargo (Becker) View in CoL . Malloch, 1910: 90.

The description by Lundbeck (1922) is supplemented by Figs 1–8 View FIGURES 1–2 View FIGURES 3–6 View FIGURES 7–8 and comments below. Male frons as Fig. 7 View FIGURES 7–8 , but in addition there are four differentiated robust hairs either side of the SAs. The postpedicel (third antennal segment) has numerous SPS vesicles whose diameters range between those of the hair sockets to those of the SAs sockets. Labella of both sexes with fewer than twenty scattered spinules below each. Notopleuron with three bristles and male with a fully exposed orifice of the notopleural gland duct (N in Fig. 2 View FIGURES 1–2 ). Right posterolateral lobe of male epandrium strongly extended rearwards and lobes at rear of hypandrium greatly reduced ( Fig. 8 View FIGURES 7–8 ). Female abdomen with orifice of common duct of paired dorsal glands between tergites 5 and 6 ( Fig. 6 View FIGURES 3–6 ). Paired lobes at rear of segment 8 of venter heavily pigmented ( Fig. 5 View FIGURES 3–6 ). Furca (internalised sternite 9) an irregular hoop with an associated vaginal sclerite ( Figs 4–5 View FIGURES 3–6 ). Hairs below basal half of hind femur not differentiated from adjacent hairs of anterior face. Spinules of apical combs of hind tibiae all simple. Wings ( Fig. 1 View FIGURES 1–2 ) with outer half of costa a little thickened; no hair at base of vein 3; costal cilia relatively short; Sc strong and fusing with R1; at least the first three thin veins (veins 4–6) brown; several axillary bristles; membrane with well developed, dense, microsetae.

Material

Numerous males and females from the British Isles. Widely distributed in Europe.

References

Becker, T. (1901) Die Phoriden. Abhandlungen der zoologisch-botanischen Gesellschaft in Wien, 1, 1 - 100.

Brues, C. T. (1903) A monograph of North American Phoridae. Transactions of the American Entomological Society, 29, 331 - 404.

Lundbeck, W. (1922) Diptera Danica Part VI Pipunculidae, Phoridae. London, Wesley. 455 pp.

Malloch, J. R. (1910) Scottish Phoridae, with tables of all the British species and notes of localities. Annals of Scottish Natural History, 1910, 15 - 21, 87 - 92.

Figures

FIGURES 1–2. Beckerina umbrimargo male: (1) right wing; (2) left notopleuron and humerus (H = humerus, M = mesopleuron, N = opening of notopleural gland, S = spiracle, T = tegula). Scale bars = 0.1 mm.

FIGURES 3–6. Beckerina umbrimargo female: (3) furca (internalised abdominal sternite 9) from above, with anterior end to top; (4) furca from side; (5) right lobe at rear of abdominal sternum 8; (6) abdominal tergites 5 and 6. Scale bars = 0.1 mm.