Limnophora riparia (Fallén)

Michelsen, Verner, 2021, Macaronesian Muscidae (Diptera). II. The genus Limnophora Robineau-Desvoidy with description of a new Canarian endemic species, Zootaxa 4952 (1), pp. 101-127 : 118

publication ID	https://doi.org/10.11646/zootaxa.4952.1.6
publication LSID	lsid:zoobank.org:pub:5C640B7A-AA7A-435B-93C7-F9AC61A71A9B
DOI	https://doi.org/10.5281/zenodo.4685435
persistent identifier	https://treatment.plazi.org/id/039F879D-026B-FFCC-57B3-FD37FBF072CA
treatment provided by	Plazi (2021-04-08 09:20:21, last updated 2024-11-26 08:56:01)
scientific name	Limnophora riparia (Fallén)
status

Treatment

Limnophora riparia (Fallén) View in CoL

( Figs 10D‒F View FIGURE 10 , 12D View FIGURE 12 , 13B View FIGURE 13 )

Calliophrys riparia (Fallén) ; Becker 1908a: 105 (Tenerife); Becker 1908b: 195 (Madeira); Frey 1936: 132 (Tenerife).

Limnophora (Calliophrys) riparia capoverdica Emden View in CoL ; Emden 1958: 11 ( Cape Verde Is.). Syn. nov.

Limnophora (Melanochelia) riparia (Fallén) View in CoL ; Santos Abréu 1976: 101 (La Palma).

Limnophora (Calliophrys) riparia (Fallén) View in CoL ; Hennig 1960: 391, text fig. 70C, plate figs 189, 281; Báez 1981: 637, pl. 1 fig. 8 (Tenerife, La Palma).

Limnophora riparia (Fallén) View in CoL ; Pont 1980: 749.

Material examined. CAPE VERDE ISLANDS [ MZH]: São Nicolau : Chã da Preguisa, 1♂, 1♀ [holotype and paratype of L. riparia capoverdica Emden, 1958 ] 13‒17.xii.1953 (H. Lindberg]. CANARY ISLANDS [ MZH, NHMD]: TENERIFE: Icod de las Vinos, 1♂ 1931 ( R. Frey). LA GOMERA: La Laja, 28°06´N 17°11´W, 480‒ 600m, 1♀ 22‒29.i.2016 ( V. Michelsen). Further European material in NHMD seen from Denmark, Greece (Crete), Iceland, Spain and Sweden GoogleMaps .

Taxonomic note. Emden (1958) proposed the subspecies Limnophora (Calliophrys) riparia capoverdica for the Cape Verde population of the widespread Palearctic L. riparia , based on some differences in colour of the head and mesonotum and length of the aristal branches. On direct comparison of type specimens (see above) with specimens from the Canary Islands and various European countries I found that the colour falls within the variation of the nominal species and that the difference pertaining to the arista is non-existing. Therefore, Limnophora (Calliophrys) riparia capoverdica Emden is here considered as a synonym of Limnophora riparia (Fallén) , syn. nov.

Diagnosis. Small to medium sized, wing length 3.8‒5.5mm. Male: Arista short-pubescent, longest branches not quite as long greatest width of arista. Frons broad, flat, near horizontal, widening towards lunule; vertex and fronto-orbital plates in dorsal view greyish brown pruinose, long frontal triangle silvery white pruinose, frontal vitta matt black. Parafacial plates silvery white with a black patch on vibrissal area. Fronto-orbital plate with 2 orbital and 3 frontal setae. Frons lying behind moderately produced facial margin. Mesonotum light grey pruinose with three broad, dark brown stripes that occasionally merge behind the suture and dark patches at laterobasal corners of scutellum. Dorsocentral setae 4 behind the suture; presutural acrostichal field bare except for two close-set rows of setulae. Calypteres dirty whitish, wing membrane brownish tinged; vein R 4+5 on basal half between radial node and crossvein r‒m with 3‒4 dorsal setulae. Mid femur with (1‒)2 subapical pd setae and a few pv setae on basal third; mid tibia with 1 pd seta near middle. Hind femur with 3‒5 av setae on distal half, without pv setae. Sternite I bare. Sternite V and hypopygium as in Figs 10D‒F View FIGURE 10 . Female: Overall larger but otherwise very similar to the male even in respect to the head characteristics. Ovipositor ( Figs 12D View FIGURE 12 , 13B View FIGURE 13 ) most similar to those of L. bipunctata and L. nitidithorax , but the lateral seta on tergite VIII is accompanied by 1‒3 fine setulae. See Table 1 View Table 1 for more ovipositor characters.

Distribution. Cape Verde Is.: São Nicolau; Canary Islands: Tenerife, La Gomera and La Palma; Madeira. A widespread Palearctic species ranging west‒east from Macaronesia to Tajikistan.

References

Baez, M. (1981) Dipteros de Canarias VIII: Tribus Limnophorini y Coenosiini (Dipt., Muscidae). Anuario de Estudios Canaricos, 27, 619 - 670.

Becker, T. (1908 a) Dipteren der Kanarischen Inseln. Mitteilungen aus dem Zoologischen Museum in Berlin, 4, 1 - 180, 4 pls.

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

Emden, F. I. van (1958) Muscidae collected on the Cape Verde Islands. Results of the Zoological Expedition of Professor Dr. Hakan Lindberg to the Cape Verde Islands in the winter 1953 - 54. No 24. Commentationes biologicae, 20, 1 - 18.

Frey, R. (1936) Die Dipterenfauna der Kanarischen Inseln und ihre Probleme. Commentationes biologicae, 6, 1 - 237, 10 pls.

Pont, A. C. (1980) Family Muscidae. In: Crosskey, R. W. (Ed.), Catalogue of the Diptera of the Afrotropical Region. British Museum (Natural History), London, pp. 721 - 761.

Santos Abreu, E. (1976) Monografia de los Anthomyidos de las Islas Canarias (Dipteros). Excmo. Cabildo Insular de La Palma, La Palma, 175 pp. [Posthumous, unedited pre- 1937 contribution.]

Figures

FIGURE 10. Limnophora quaterna (Loew) (A‒C), L. riparia (Fallén) (D‒F). Males. Sternite V (A, F); hypopygium, caudal (B, E) and lateral (C, D). Same scale.

FIGURE 12. Limnophora exigua (Wiedemann) (A, B), L. obsignatula sp. nov. (C), L. riparia (Fallén) (D). Ovipositor, lateral (A, C, D) and dorsal (B). Same scale.

FIGURE 13. Limnophora paneliusi (Emden) (A), L. riparia (Fallén) (B). Ovipositor, distal part, lateral. Arrow: dorsal hind marginal setulae on T VIII. Abbreviations: Acc scl = accessory sclerite; Ce = cercus; Ep = epiproct; Hy = hypoproct; St = sternite; T = tergite. Same scale.