Chamaemyia aridella

Abstract

Chamaemyia aridella (Fallén, 1823) Figs 9-20 MATERIALEXAMINED: ITALY: Lombardy, 13, MarmiroloRes. Nat., 60m, Boscodella Fontana, 27.VI.2000, B. Merz & F. Masonlegerunt (CDSL). – Veneto, 633, Mt. Baldo 1750- 1850m, LaColma, 1.VII.2000, B. Merz & F. Masonlegerunt (MHNG: 433; CDSL: 233). – 233, Verona, Mt. Lessini 1750m, Mt. Range, Mt. Castelberto, 12.VIII.2003, B. Merzlegit (MHNG). – Tuscany *, 633, 1400-1600m, Orecchiella (6 kmESillano) R.N. PaniadiCorfino, 29.VI.2000, B. Merz & F. Masonlegerunt (MHNG: 433; CDSL: 233). – Puglia *, 233, 650m, Mte. Gargano, 5kmES. Giovanni, 26.VII.1995, B. Merzlegit (MHNG). – 13, 650m, Mte. Gargano, 5kmES. Giovanni, 27.VII.1995, B. Merzlegit (MHNG). – Sicily, 13, Etna 1450m, PianodiDonne, 5.VI.1999, B. Merzlegit (CDSL). – 13, Etna 1000m, 3KmNWMilo, 5.VI.1999, B. Merzlegit (MHNG). – 633, 1♀, 1800m, PianoProvenzana, 9.VI.1999, B. Merz legit (MHNG: 433 & 1♀; CDSL: 233). – 13, 750m, Linguaglossa, 6.VI.1999, B. Merzlegit (MHNG). REMARKS: C. aridella has black antennae, yellow, rarely brownish palpi, and abdomen silver grey with light gold pollinosity and without spots in both sexes (Coe, 1942; Collin, 1966; Beschovski & Tanasijtshuk, 1990; Beschovski, 1992). Rarely, however, faint dorsal spots on tergites 4-5 may be developed. The species is characterized by long setae on posterior margin of tergite 5 in both sexes, and the shape of tergite 9 of male which is oval in lateral view and shiny black (Figs 9, 10, 15). Aedeagus, in lateral view, variable at base, tending to be enlarged posteriorly, then characteristically and regularly curved from base to tip (Figs 11 - 20), fairly elongated, but always longer than parameres. Ventral part of tubular aedeagus less sclerotized and ruffled, and therefore warps sometimes during preparation for morphological study; thus a similar shape may appear very different (Figs 11, 13, 16, 18, 19) and may be source for misidentifications. The species is common in Italy from 600 to 2000m.Published as part of Raspi, Alfio, 2013, Contribution to the knowledge of the Chamaemyiidae (Diptera) of Italy, Switzerland and some Mediterranean countries with the description of Parochthiphila (Euestelia) ephesi n. spec. from Turkey, pp. 13-28 in Revue suisse de Zoologie 120 (1) on page 22, DOI: 10.5281/zenodo.582862