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