Empis (Pachymeria)

• Main Authors: Shamshev, Igor V., Barták, Miroslav
• Format: Text
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Empididae; Empis; Alar; Fennoscandia
• Online Access: https://dx.doi.org/10.5281/zenodo.5928746; https://zenodo.org/record/5928746

Key to males of Palaearctic species of Pachymeria Note . The male is unknown for E. specularis Bezzi described from Egypt or Syria and placed provisionally to Pachymeria (Bezzi 1909). We suggest a subdivision of Pachymeria into two species groups (namely, E. femorata group and E. tumida group) as defined below. 1 Hind leg with geniculate tibia (Chvála 1994: 31, fig. 23). Male terminalia with epandrial lamellae very large, boat-shaped, evenly rounded posteriorly, entirely shielding very long filamentous phallus ( E. femorata group)....................... 2 - Hind leg with simple tibia (Fig. 1). Male terminalia with epandrial lamellae small, dolabriform (Figs 1, 3); phallus free on basal part between posterior margin of sternite 8 and lower margin of epandrial lamella ( E. tumida group)............... 5 2 Mesonotum with only black setae; laterotergite usually with black setae (variable in E. femorata )...................... 3 - Mesonotum with acrostichals and dorsocentrals pale at least anteriorly, numerous pale hair-like setae on notopleuron; laterotergite with mostly pale setae (sometimes additional dark setae present)........................................ 4 3 Palpus yellow. Fore and mid legs only with femora blackish brown on about basal 2/3, otherwise yellowish to brownish yellow................................................................................ E . ( P .) femorata Fabricius - Palpus black. Fore and mid legs uniformly blackish brown................................. E . ( P .) ptilocnemis (Loew) 4 Frons moderately broad below ocellar triangle, nearly as broad as distance between inner margins of posterior ocelli. Antennae with pedicel blackish............................................................. E . ( P .) mediterranea (Loew) - Frons very narrow below ocellar triangle, at most as broad as anterior ocellus. Antennae with pedicel yellowish............................................................................................ E . ( P .) subclavata (Loew) 5 Frons below ocellar triangle very narrow, usually narrower than anterior ocellus, eyes often almost touching............. 6 - Frons below ocellar triangle broader, at least twice as broad as anterior ocellus..................................... 7 6 Abdominal sternites shiny........................................................... E . ( P .) obscuripes (Loew) - Abdominal sternites densely greyish pollinose............................................. E . ( P .) contigua (Loew) 7 Palpus black to blackish brown, very long, projecting far beyond mouth-cavity, covered with numerous blackish setae.......................................................................................... E . ( P .) scotica Curtis - Palpus yellow to pale yellow, at most darkened on apex, short, covered with scattered setulae......................... 8 8 Halter with brown knob................................................................ E . ( P .) tumida Meigen - Halter entirely yellow.................................................................................. 9 9 Abdomen almost entirely shiny, only tergite 1 and sternites 1–2 greyish pollinose................ E . ( P .) ringdahli (Collin) - Abdomen extensively pollinose, at least all sternites entirely densely pollinose.................................... 10 10 Prosternum pale setose. Abdominal tergites covered with golden yellow hair-like setae (besides black posteromarginal setae)................................................................................ E . ( P .) roditakisi Shamshev - Prosternum and abdomen only with black setae............................................................. 11 11 Scutum with 4 brownish vittae (dorsal view) between rows of acrostichal, dorsocentral and supra-alar setae. Abdominal tergites very pale greyish on posterior margin................................................... E . ( P .) picena Bezzi - Scutum with 3 subshiny to shiny blackish vittae running beneath rows of acrostichal and dorsocentral setae (dorsal view), sometimes, with additional spots on supra-alar space. Abdominal tergites uniformly greyish, sometimes, with shiny spots....................................................................................................... 12 12 Antennal postpedicel largely reddish yellow. Scutum with 3 subshiny blackish vittae running beneath rows of acrostichal and dorsocentral setae (dorsal view)........................................................ E . ( P .) vikhrevi sp. nov. - Antennal postpedicel black. Scutum with 3 subshiny to shiny blackish vittae running beneath rows of acrostichal and dorsocentral setae (dorsal view) and with 2 similar spots on supra-alar space on each side.................................................................................................. E . ( P .) trianguligera Strobl (= E. suberis Becker) : Published as part of Shamshev, Igor V. & Barták, Miroslav, 2019, New and little-known species of Empis (Diptera: Empididae) from Bulgaria, Israel and Turkey, with keys to the Palaearctic Pachymeria and the Mediterranean Xanthempis, pp. 91-100 in Zootaxa 4555 (1) on page 95, DOI: 10.11646/zootaxa.4555.1.7, http://zenodo.org/record/2624189 : {"references": ["Bezzi, M. (1909) Diptera syriaca et aegyptia a cl. P. Beraud collecta. Broteria, 8, 37 - 65.", "Chvala, M. (1994) The Empidoidea (Diptera) of Fennoscandia and Denmark. III. Genus Empis. Fauna Entomologica Scandinavica, 29, 1 - 187."]}