No, direi più che altro
Rhamphtomyia sp. per l'assenza della biforcazione R4+5.
(o almeno questo sembra da foto).
Ho fatto una piccola ricerca, ma purtroppo i dettagli delle foto non credo siano insufficienti per arrivare alla specie (probabilmente appartiene al sottogenere
Aclonempis o
Rhamphomyia s.str.).
Forse uno specialista ci potrebbe dire qualcosa in più...
Comunque, dato sono riuscito a trovare almeno i caratteri distintivi dei sottogeneri, spero di fare cosa gradita riportandoli qui di seguito.
Penso che potranno tornarci utili per le prossime identificazioni.
AclonempisAxillary lobe of wing well developed.
Thorax black or grey. Acrostichals always present. Legs dark (except in barbata and sometimes geniculata). Stout or plump species, male never with thorax velvety black and often with large and conspicuous genitalia.
Labellae of proboscis long and slender, very shorthaired, the hairs not so long as labellae are wide. Labrum at least one and a half times longer than head is deep. No bristle in 'comb' at tip of hind tibiae behind.
Small species around 3 mm.
(from Hackston M., 2017)
Rhamphomyia s.str.
Axillary lobe of wing well developed.
Anal vein distinct for its whole length from all points of view, or faint about base only. Prothoracic episterna bearing hairs and sides of prothoracic sternum often with many hairs.
Labellae of proboscis rather stout, or if somewhat slender with hairs as long or longer than labellae are wide. Labrum seldom much longer than head is deep. In doubtful cases always a distinct bristle in 'comb' at tip of hind tibia posteriorly.
(from Hackston M., 2017)
MegacyttarusAxillary lobe of wing well developed.
Thorax black or grey. Eyes distinctly separated on the frons in male but hind tibiae not very slender or hind tarsi slender and whitish. When darker stripes on thorax they lie between the rows of bristles. Episterna bare. Anal vein very faint on end half and not reaching wing-margin.
Venation in female abnormal with the discal cell extending almost to the wing margin or wings with elongate brownish patches.
(from Hackston M., 2017; and bugguide.net)
PararhamphomyiaAxillary lobe of wing well developed.
Anal vein faint or indistinct from some points of view about middle, sometimes not reaching wingmargin. Axillary indentation angle about 90º or more, if less anal vein as above. Prothoracic episternum usually bare, and sides of sternum with only a few hairs or often with a single bristle or hair.
(from Hackston M., 2017)
Holocleraspecies of Rhamphomyia (Holoclera) are usually small- to middle- sized (wing length from 2.4 to 6.6 mm), and yellow to black in colour. labrum usually longer than head is high, axillary angle slightly acute to slightly obtuse, prosternum with no setae. Acrostichals are either absent or present (in the latter case legs and palpus are yellow). legs are slender, and never pennate in females. Postpedicel at least twice as long as broad, stylus shorter than postpedicel. Male eyes holoptic or narrowly dichoptic, female frons relatively narrow. Male 8th tergite often modified: either partially fused with 8th sternite or desclerotized medially. Biology is poorly known, adults are flower visitors, and they have never been observed hunting prey.
(from Bartak M. & Kubik S., 2012)
AmydroneuraThe type species of the subgenus Amydroneura Collin, 1926, viz. Rhamphomyia erythrophthalma Meigen, 1830 (original description), can be distinguished from the other subgenera by the elongate discal medial cell (dm) (cell D), in which the vein forming the upper margin is very faint and is only distinguishable around the middle as a slight depression in the wing surface.
(from Barták M., 2006)
LundstroemiellaAxillary lobe of wing little developed, the axillary angle therefore extremely obtuse. 3rd antennal segment very long and slender. Eyes separated on frons in male
(from Hackston M., 2017)
Barták M., 2006. Two new European species of Rhamphomyia subgenus Amydroneura (Diptera: Empididae). Entomologica Fennica. 8: 359-365.Barták M. & Kubik S., 2012. A review of the Palaearctic species of Rhamphomyia subgenus Holoclera (Diptera: Empididae) with description of 5 new species. Revue suisse de Zoologie 119 (3): 385-407Hackston M., 2015. Key to the genera of the EmpididaeHackston M., 2017. Key to the genus Rhamphomyia of the Empididae
.
