Dicranomyia (Dicranomyia) mitis

Starý, Jaroslav & Stubbs, Alan E., 2015, Five species under Dicranomyia (Dicranomyia) mitis (Meigen, 1830) (Diptera, Limoniidae), Zootaxa 3964 (3), pp. 321-334 : 333-334

Key to Dicranomyia (Dicranomyia) mitis and allies

1 Vein Sc1 with row of macrotrichia posteroventrally. Prescutum mostly greyish-brown to bluish-grey................... 2

- Vein Sc1 without any macrotrichia. Prescutum mostly yellow to ochreous......................................... 3

2 Prescutum with heavy, greyish-brown pruinosity. For male tarsi, male and female terminalia, and wing, see Figs 1 , 6 , 11 , 16............................................................... Dicranomyia (Dicranomyia) mitis ( Meigen, 1830)

- Prescutum with heavy, dark brownish-grey to bluish-grey pruinosity and with three dust-free, shiny black stripes. For male tarsi, male and female terminalia, and wing, see Figs 2 , 7 , 12 , 17..... Dicranomyia (Dicranomyia) affinis ( Schummel, 1829)

3 Medium-sized species (wing length 6.5–9.5 mm). Wing with pterostigma distinct (Fig. 18). Male terminalia with rostral spines shorter than those of other species ( Fig. 8 ). Female terminalia with space between cerci very narrow, about one third width of cercus breadth at base ( Fig. 13 ). For male tarsi, see Fig. 3 ............. Dicranomyia (Dicranomyia) quadra ( Meigen, 1838)

- Small species (wing length 5.3–8.0 mm). Wing clear except for at most feebly indicated pterostigma (Figs 19, 20). Male terminalia with rostral spines normally long ( Figs 9, 10 ). Female terminalia with space between cerci subequal in width to cercus breadth at base ( Figs 14, 15 )............................................................................ 4

4 Two last male tarsomeres long, subequal in length, parallel-sided; tarsal claws short, with only one tooth fairly distinct ( Fig. 4 ). Male terminalia with rostral spines gently curved, separated at base by less than their own breadth ( Fig. 9 ). Female terminalia with cercus about two thirds length of tergite 10 ( Fig. 14 ). For wing, see Fig. 19................................................................................................. Dicranomyia (Dicranomyia) lutea ( Meigen, 1804)

- Male tarsomere 5 distinctly shorter than tarsomere 4; male tarsal claws moderately long, with single well-developed tooth at base ( Fig. 5 ). Male terminalia with rostral spines almost straight, separated at base by more than their own breadth ( Fig. 10 ). Female terminalia with cercus subequal in length to tergite 10 ( Fig. 15 ). For wing, see Fig. 20............................................................................... Dicranomyia (Dicranomyia) imbecilla Lackschewitz, 1941

Figures

FIGURES 1 – 5. T wo distal tarsomeres and tarsal claw (with details of tarsal claw). 1 — D. (D.) mitis (Czech Republic: Bohemia: Šumava Mts). 2 — D. (D.) affinis (Morocco: Rif Mts). 3 — D. (D.) quadra (Czech Republic: Moravia: Hrubý Jeseník Mts). 4 — D. (D.) lutea (Czech Republic: Moravia: Moravskoslezské Beskydy Mts). 5 — D. (D.) imbecilla (Czech Republic: Moravia: Hrubý Jeseník Mts). Scale bar 0.25 mm.

FIGURES 6 – 10. Male terminalia, general view, dorsal (with details of rostral prologation of ventral gonostylus). 6 — D. (D.) mitis (Czech Republic: Bohemia: Šumava Mts). 7 — D. (D.) affinis (Morocco: Rif Mts). 8 — D. (D.) quadra (Czech Republic: Moravia: Hrubý Jeseník Mts). 9 — D. (D.) lutea (Czech Republic: Moravia: Moravskoslezské Beskydy Mts). 10 — D. (D.) imbecilla (Czech Republic: Moravia: Hrubý Jeseník Mts). Scale bar 0.5 mm.

FIGURES 11 – 15. Female terminalia, internal structures, ventral. 11 — D. (D.) mitis (Czech Republic: Moravia: Moravskoslezské Beskydy Mts). 12 — D. (D.) affinis (Morocco: Rif Mts). 13 — D. (D.) quadra (Czech Republic: Moravia: Hrubý Jeseník Mts). 14 — D. (D.) lutea (Czech Republic: Moravia: Moravskoslezské Beskydy Mts). 15 — D. (D.) imbecilla (Czech Republic: Moravia: Hrubý Jeseník Mts). Scale bar 0.5 mm. ce—cerci; gf—genital fork (vaginal apodeme); ifp—infraanal plate; s 9 — sternum 9; t 10 — tergite 10.