Scathophaga MEIGEN, 1803

Šifner, František, 2020, Scathophaga karmazini nov. sp., a new species from Austria, with a key to Scathophaga species from Central Europe (Diptera, Scathophagidae), Linzer biologische Beiträge 52 (1), pp. 731-757 : 738-739

Key to Central European species of the genus Scathophaga MEIGEN, 1803

1 Arista bare ...........................................................................................................................2

‒ Arista plumose or pubescent ...............................................................................................6

2 Male abdominal sternite 5 with two inconspicuous submedial processes or sternite 5 with only an incision medially. ...........................................................................................3

‒ Male abdominal sternite 5 with distinct lobes .....................................................................4

3 Male surstyli long ( Fig. 14 ), male pregonite with four setae ( Fig. 15 ), female abdominale sternite 7 divided into three separate sclerites ( Fig. 16 ) ...................................... ....................................................................................................... S. furcata (SAY, 1823)

- Male surstyli very short ( Fig. 62 ), male pregonite with three setae dorsally ( Fig. 63 ) .......... ........................................................................................................ S. vlastae ŠIFNER, 2000

4 Lobes of male sternite 5 arched outside, medially with short bristles ( Fig. 21 ), male pregonite with one dorsal seta ( Fig. 23 ), female abdominal sternite 7 long and oval............ ............................................................................................ S. intermedia (WALKER, 1849)

‒ Lobes of male abdominal sternite 5 straight........................................................................5

5 Lobes of male sternite 5 medially without short bristles ( Fig. 45 ), male pregonite with two setae apically ( Fig. 47 ), female abdominal sternite 7 long and enlarged caudally ( Fig. 48 )............................................................................. S. pictipennis OLDENBERG, 1923

‒ Lobes of male abdominal sternite 5 medially with short bristles ( Fig. 29 ), male pregonite with one apical seta and one lateral seta ( Fig. 31 ), female abdominal sternite 7 quadrate ( Fig. 32 ) ...................................................................... S. litorea (FALLÉN, 1819)

6 Male abdominal sternite 5 submedially only with an incision.............................................7 ‒ Male abdominal sternite 5 with two submedial processes...................................................8

7 Male abdominal sternite 5 rounded and long haired ( Fig. 33 ), male pregonite with four setae apically ( Fig. 35 ), female abdominal sternite 7 pointed caudally ( Fig. 36 ). ................. ................................................................................................ S. lutaria (FABRICIUS, 1794)

‒ Male abdominal sternite 5 angular laterally and with long bristles ( Fig. 9 ), male pregonite wide with one apical seta and 10‒14 setae of different length dorsally ( Fig. 11 ), female abdominal sternite 7 long, narrowed distally, with six to eight bristles caudally ( Fig. 12 ). ................................................................... S. cineraria (MEIGEN, 1826)

8 Submedial processes of male abdominal sternite 5 not prolonged elongate ........................9

‒ Submedial processes of male abdominal sternite 5 distinctly elongated ...........................11

9 Male pregonite with three setae apically ( Fig. 19 ), male surstyli straight and pointed ( Fig. 18 ), female abdominal sternite 7 narrowed caudally and covered with fine bristles ( Fig. 20 ).................................................................................. S. inquinata (MEIGEN, 1826)

‒ Male pregonite with two setae apically .............................................................................10

10 Male abdominal sternite 4 very wide and narrowed distally ( Fig. 41 ), male surstyli long, straight and pointed ( Fig. 42 ), male pregonite with one short and one long setae apically ( Fig. 43 ), female abdominal sternite 7 withan incision caudally ( Fig. 44 )............... ................................................................................................ S. moraviensis ŠIFNER, 2011

‒ Male abdominal sternite 4 quadrate ( Fig. 5 ), male surstyli weakly arched and pointed ( Fig. 6 ) male pregonite with two setae of equal size apically ( Fig.7 ), female abdominal sternite 7 enlarged caudally ( Fig. 8 ) ............................................. S. analis (MEIGEN, 1826)

11 Acrostichal bristles numerous, forming more than two rows; lateral parts of male starnite 5 short ( Fig. 49 ), male pegonite with one long seta apically and one long seta dorsally ( Fig. 51 ), female abdominal sternite 7 divided into three separate sclerites, two lateral sclerites connected by hyaline membrane, distal sternite is independent ( Figs 52a‒d ). .............................................................................. S. stercoraria (LINNAEUS, 1758)

‒ Acrostichal bristles in two distict rows..............................................................................12

12 Lateral part of male sternite 5 long ( Fig. 37 ), male pregonite with one seta apicalliy and one seta laterally ( Fig. 39 ), male surstyli basally arched, cerci densely haired ( Fig. 38 ), female abdominal sternite 7 divided into three separate sclerites connected by hyaline membrane ( Figs 40a‒d )........................................................ S. merdaria (FABRICIUS, 1794)

‒ Lateral part of male sternite 5 short and weakly sclerotized..............................................13

13 Male surstyli straight and pointed .....................................................................................14

‒ Male surstyli arched and pointed.......................................................................................15

14 Male pregonite with one seta apically and six setae dorsally ( Fig. 55 ), sternites 4 and 5 oval, female abdominal sternite 7 divided into two separate sclerites ( Fig. 56 ) .................... .................................................................................................. S. suilla (FABRICIUS, 1794)

‒ Male pregonite with one seta apically and seven setae dorsally ( Fig. 59 ), sternites 4 and 5 rectangular, female abdominal sternite 7 oval and in one piece ( Fig. 60 ). ......................... ............................................................................................... S. taeniopa (RONDANI, 1867)

15 Male abdominal sternite 4 long, rectangular ( Fig. 25 ), male pregonite with one seta apically and six setae dorsally ( Fig. 27 ), female abdominal sternite 7 in one piece, long and bristled caudally ( Fig. 28 )..................................................... S. jizerensis ŠIFNER, 2004

‒ Male abdominal sternite 4 enlarged caudally ( Fig. 1 ), male pregonite with one long seta apically and 5 long setae and in addition to 3‒4 short setae dorsally ( Fig. 3 ), female abdominal sternites 7 and 6 narrow and weakly bristled ( Fig. 4 ). ...... S. karmazini nov. sp.

Figures

Figs 13-16. Scathophaga furcata (SAY, 1823). (13) male abdominal sternites 5 to 3; (14) cerci and surstyli (caudal view); (15) right pregonite; (16) female abdominal sternites 8 to 5. Scale bars: 0.5 mm (Figs 13, 14, 16); 0.1 mm (Fig. 15).

Figs 61-63. Scathophaga vlastae ŠIFNER, 2000. (61) male abdominal sternites 5 to 4; (62) cerci and surstyli (caudal view); (63) right pregonite. Scale bars: 0.5 mm (Fig. 61, 62); 0.1 mm (Fig. 63).

Figs 21-24. Scathophaga intermedia (WALKER, 1849). (21) male abdominal sternites 5 to 3; (22) cerci and surstyli (caudal view); (23) left pregonite; (24) female abdominal sternites 8 to 5. Scale bars: 0.5 mm (Figs 21, 22, 24); 0.1 mm (Fig. 23).

Figs 45-48. Scathophaga pictipennis (OLDENBERG, 1923). (45) male abdominal sternites 5 to 2; (46) cerci and surstyli (caudal view); (47) right pregonite; (48) female abdominal sternites 8 to 3. Scale bars: 0.5 mm (Figs 45, 46, 48); 0.1 mm (Fig. 47).

Figs 29-32. Scathophaga litorea (FALLÉN, 1819). (29) male abdominal sternites 5 to 3; (30) cerci and surstyli (caudal view); (31) right pregonite; (32) female abdominal sternites 8 to 6. Scale bars: 0.5 mm (Figs 29, 30, 32); 0.1 mm (Fig. 31).

Figs 33-36. Scathophaga lutaria (FABRICIUS, 1794). (33) male abdominal sternite 5 to 3; (34) cerci and surstyli (caudal view); (35) right pregonite; (36) female abdominal sterntes 8 to 5. Scale bars: 0.5 mm (Figs 33, 34, 36); 0.1 mm (Fig. 35).

Figs 9-12. Scathophaga cineraria (MEIGEN, 1826). (9) male abdominal sternites 5 to 3; (10) male cerci and surstyli (caudal view); (11) right pregonite; (12) female abdominal sternites 8 to 5. Scale bars: 0.5 mm (Figs 9, 10, 12); 0.1 mm (Fig. 11).

Figs 17-20. Scathophaga inquinata (MEIGEN, 1826). (17) male abdominal sternites 5 to 2; (18) cerci and surstyli (caudal view); (19) right pregonite; (20) female abdominal sternites 8 to 5. Scale bars: 0.5 mm (Figs 17, 18, 20); 0.1 mm (Fig. 19).

Figs 41-44. Scathophaga moraviensis ŠIFNER, 2011. (41) male abdominal stzernites 5 to 2; (42) cerci and surstyli (caudal view); (43) right pregonite; (44) female abdominal sternites 8 to 5; Scale bars: 0.5 mm (Figs 41, 42, 44); 0.1 mm (Fig. 43).

Figs 5-8. Scathophaga analis (MEIGEN, 1826). (5) male abdominal sternites 5 to 2; (6) male cerci and surstyli (caudal view); (7) right pregonite; (8) female abdominal sternites 8 to 4. Scale bars: 0.5 mm (Figs 5, 6, 8); 0.1 mm (Fig. 7).

Figs 49-52. Scathophaga stercoraria (LINNAEUS, 1758). (49) male abdominal sternites 5 to 3; (50) cerci and surstyli (caudal view); (51) right pregonite; (52a,b,c,d) the shape of female abdominal sternites 7 to 5. Scale bars: 0.5 mm (Figs 49, 50, 52a,b,c,d); 0.1 mm (Fig. 51).

Figs 37-40. Scathophaga merdaria (FABRICIUS, 1794). (37) male abdominal sternite 5 to 3; (38) cerci and surstyli (caudal view); (39) left pregonite; (40a,b,c,d) the shape of the female abdominal sternites 7 to 5; Scale bars: 0.5 mm (Figs 37, 38, 40a,b,c,d); 0.1 mm (Fig. 39).

Figs 53-56. Scathophaga suilla (FABRICIUS, 1794). (53) male abdominal sternites 5 to 3; (54) cerci and surstyli (caudal view); (55) right pregonite; (56) female abdominal sternites 8 to 5. Scale bars: 0.5 mm (Figs 53, 54, 56); 0.1 mm (Fig. 55).

Figs 57-60. Scathophaga taeniopa (RONDANI 1867). (57) male abdominal sternites 5 to 2; (58) cerci and surstyli (caudal view); (59) right pregonite; (60) female abdominal sternites 8 to 5. Scale bars: 0.5 mm (Figs 57, 58, 60); 0.1 mm (fig. 59).

Figs 25-28. Scathophaga jizerensis ŠIFNER, 2004. (25) male abdominal sternites 5 to 3; (26) cerci and surstyli (caudal view); (27) right pregonite; (28) female abdominal sternites 8 to 5. Scale bars: 0.5 mm (Figs 25, 26, 28); 0,1 mm (Fig. 27).

Figs 1-4. Scathophaga karmazini nov.sp. (1) male abdominal sternites 5 to 3; (2) male cerci and surstyli (caudal view); (3) left pregonite; (4) female abdominal sternites 8 to 4. Scale bars: 0.5 mm (Figs 1, 2, 4); 0.1 mm (Fig. 3).