Polyodaspis Duda

Nartshuk, E. P., 2016, A new species of the genus Polyodaspis Duda, 1933 (Diptera: Acalyptratae: Chloropidae) from Central Asia with a key to the Palaearctic species, Zootaxa 4072 (1), pp. 144-150 : 147

Key to Palaearctic species of the genus Polyodaspis Duda

1. First basal cell (bp) wide in the middle. Scutellum with many subapical setae or with single pair of subapical setae (Figs 8, 10).................................................................................................... 2

- First basal cell (bp) not widened. Scutellum with single pair of subapical setae..................................... 6

2. Surface of frons with a swelling before ocellar triangle. Postocellar setae slightly convergent ( Fig. 7 ).—Europe ( Hungary)........................................................................... P. convexa Ismay et Schulten, 2003

- Surface of frons flat without a swelling before ocellar triangle. Postocellar setae parallel............................. 3

3. Scutellum with apical and many subapical setae on lateral margin.............................................. 4

- Scutellum with apical and one pair of subapical setae......................................................... 5

4. Scutum and scutellum more dull, covered compact setulae. Frontal triangle with minute reticulate sculpturing. Haltere black. (Figs 8–12)—Palaearctic and Oriental Regions...................................... P. ruficornis (Macquart, 1835) (= P. n uci s (Perris, 1839); P. marginata (Loew, 1858) ; P tarsalis Frey, 1923 ; P. flavipila Duda, 1934 ; P. endogena de Meijere, 1938; P. flavisetosa Nartshuk, 1991 ; P. similis Nartshuk, 1991 ) (see Nartshuk, 2010, 2011a).

- Scutum and scutellum more shiny, less compactly setulose. Frontal triangle shiny. Haltere yellow.—South of France.......................................................................................... P. picardi Séguy, 1946

5. Anterior part of frons, face, anterior part of gena, antenna, palpi and legs including coxa brownish yellow. Proboscis short. Cerci in male genitalia fused ( Figs 13, 14).— Turkey.................................... P. splendida Nartshuk, 2012

- Frons, gena, antenna, and palpi black, legs black except yellowish tarsi.. Proboscis long geniculate. Cerci in male genitalia sep- arate ( Figs 15–19).—Europe ( Romania)............................................. P. maritima Nartshuk, 2014

6. Gena wide, twice wide as postpedicel and ¾ as high as eye................................................... 7

- Gena not so wide...................................................................................... 8

7. Gena not projecting before eye border and without diagonal ridge. Setae and setulae white ( Figs 1–6 ).—Central Asia (Uzbeki- stan)............................................................................ P. ferulae Nartshuk , sp. n.

- Gena projecting before eye border and with diagonal ridge. Setae and setulae dark to black.—Central Asia ( Kyrgyzstan)...................................................................................... P. asiatica Becker 1910

8. Postpedicel onion-shaped, arista longer than frons ( Figs 20, 21)—Central Asia ( Uzbekistan)...... P. palpata Nartshuk, 2011

- Postpedicel not so thick, discoidal....................................................................... 9 9. Ocellar triangle smooth and shining. Surface of frons mat. 5th tergum of abdomen not longer than 4th. Abdomen without mem-

Figures

FIGURE 7. P. convexa Ismay et Schulten: 7 — head anterodorsal view (after Ismay et Schulten, 2003). FIGURES 8 – 12. P. ruficornis (Macquart): 8 — wing, 9 — head, lateral view, 10 — scutellum, 11 — male genitalia epandrium, 12 — male genitalia, hypandrium and phallic complex.

FIGURES 1 – 6. Polyodaspis ferulae sp. n.: 1 — head, anterior view, 2 — head, lateral view, 3 — abdomen, lateral view, 4 — male genitalia epandrium, 5 — surstylus, lateral view, 6 — male genitalia, hypandrium and phallic complex.