Three new species of the genus Macgregoromyia Alexander, with a key to world species (Diptera, Tipulidae) Author Liu, Qifei Author Yang, Ding text Zootaxa 2011 2011-03-28 2802 41 50 journal article 47696 10.5281/zenodo.206902 32f781a3-1cb0-4f34-81f1-71c302372982 1175-5326 206902 Key to world species of genus Macgregoromyia Except for the new species, the key was compiled based on the literature as indicated. For brevicula , celestia , shikokuana and szechwanensis include reference to the very detailed figures in Savchenko 1983 (wing and male genitalia). For fohkienensis includes a female specimen from Chinese province Zhejiang. 1. Distal cells of wing with macrotrichia..................................................................... 2 - Distal cells of wing bare................................................................................ 4 2. Wing with r-m strongly arcuated, entering R4+5, R4+5 basally bent basad ( Alexander, 1955, p 367, fig. 2 )................................................................................................. M. syusiro Alexander, 1955 - Wing with r-m slightly arcuated, entering Rs, R4+5 straight basally............................................... 3 3. Wing with R1+2 absent; posterior margin of tergite 9 with a V-shaped incision; apex of lobe of gonostylus narrowed; dorsal crest of clasper of gonostylus greatly convex ( Alexander 1932, Pl. I, fig. 3, Pl. II, fig. 32 )..... M. szechwanensis Alexander, 1932 - Wing with R1+2 entire ( Fig. 5 ); tergite 9 ( Fig. 17 ) with posterior margin bearing three processes; lobe of gonostylus ( Fig. 18 ) with tip broad; clasper of gonostylus ( Fig. 19 ) with dorsal crest smooth........................ M. ternifoliusa sp. nov. 4. Wing with r-m entering Rs at fork of Rs.................................................................... 5 - Wing with r-m either entering Rs before fork of Rs or entering R4+5 beyond fork of Rs............................... 6 5. Femora brown with tips blackened; posterior margin of tergite 9 narrowly emarginated; basal beak of clasper of gonostylus short and obtuse, dorsal crest of clasper of gonostylus with a spine-like process, posterior crest laterally with a collar-like flange ( Alexander 1969, p 34, figs. 1, 2 )............................................. M. babana Alexander, 1969 - Femora dark brown with bases broadly more yellowed; median lobe of tergite 9 very reduced; basal beak of clasper of gonos- tylus long and pointed, dorsal crest of clasper of gonostylus smooth, posterior crest small, without such flange ( Alexander 1954, Pl. I, figs. 1, 8 ).......................................................... M. shikokuana Alexander, 1954 6. Wing with r-m entering R4+5 beyond fork of Rs.............................................................. 7 - Wing with r-m entering Rs before fork of Rs................................................................ 8 7. Tergite 9 medially notched; posterior crest of clasper of gonostylus produced into an obtuse lobe ( Alexander 1933, Pl. II, fig. 26 ).......................................................................... M. brevicula Alexander, 1933 - Tergite 9 medially produced into a semicircular blade; posterior crest of clasper of gonostylus convex with apex produced backwards ( Alexander 1955, p 365 )..................................................... M. itoi Alexander, 1955 8. R1+2 entire............................................................................................ 9 - R1+2 spur-like or absent................................................................................ 12 9. Rs original long before line of r-m ( Alexander 1929, Pl. I, fig. 3 )..................... M. benguetensis Alexander, 1929 - Rs original nearly in line with r-m....................................................................... 10 10. CuA1 meeting M3 near middle of cell dm ( Edwards 1932, p 54 )...................... M. perpendicularis Edwards, 1932 - CuA1 meeting M3 near fork of M........................................................................ 11 11. CuA1 meeting M3 at a point ( Fig. 10 ); tergite 9 with posterior margin bearing a shallow U-shaped incision ( Fig. 21 ); dorsal crest of clasper of gonostylus flat ( Fig. 23 )................................................... M. flatusa sp. nov. - CuA1 fused with M3 for a short distance; tergite 9 with posterior margin bearing a deep U-shaped notch; dorsal crest of clasper of gonostylus convex ( Alexander 1931, Pl. I, fig. 5, Pl. III, figs. 44–46 )................. M. brevisector Alexander, 1931 12. First flagellomere black or brown with base yellow.......................................................... 13 - First flagellomere entirely yellow....................................................................... 14 13. Rs arcuated before joint with r-m; R1+2 spur-like, apex touching Sc2 and closing cell sc2 ( Fig. 15 )................................................................................................... M. fohkienensis Alexander, 1949 - Rs straight before joint with r-m; R1+2 represented by a basal spur, paralleled with Sc2 ( Fig. 14 ).... M. rectangularis sp. nov. 14. r-m meeting Rs near fork of Rs; beak of clasper of gonostylus produced ( Alexander 1962, Pl. I, fig. 1, Pl. III, fig. 39 ).................................................................................. M. sikkimensis Alexander, 1962 - r-m meeting Rs nearly at middle of Rs; beak of clasper of gonostylus small and bent downwards ( Alexander 1932, Pl. I, fig. 4, Pl. II, fig. 34 ).................................................................. M. celestia Alexander, 1932