Mohrigia, Menzel. Moreover, 1995

Xu, Jun, Shi, Kai, Huang, Junhao & Wu, Hong, 2017, Review of the genus Mohrigia Menzel (Diptera, Sciaridae) from China, Zootaxa 4300 (1), pp. 71-98 : 72-73

Key to the species of Mohrigia (males)

1. Maxillary palps 2-segmented ( Fig. 7 E).....................................................................2

- Maxillary palps 3-segmented ( Figs 8 D, 12C)................................................................7

2. Hypopygium with an unusually split gonostylus, with a wide intercoxal lobe; wing veins M and CuA with macrotrichia dor- sally............................................................. M. insolenta Rudzinski, 2006 : Taiwan (ORI)

- Hypopygium with an ovate or elongated oval gonostylus, with intercoxal lobe narrow or absent; wing veins M and CuA with- out macrotrichia ( Fig. 14 D)..............................................................................3

3. Intercoxal lobe absent............................................. M. cirricoxalis Rudzinski, 2006 : Taiwan ( ORI)

- Intercoxal lobe present ( Fig. 7 D).........................................................................4

4. Gonostylus with a small intercoxal lobe ( Fig. 7 D)............................................................5

- Gonostylus with an oblong intercoxal lobe..................................................................6

5. Gonocoxite with an apicodorsal lobe bearing three long setae, tegmen slightly and smoothly curved, parameral apodeme later- ally sclerotized on tegmen ( Figs 7 C–D)....................................... M. notolobos sp. nov.: Yunnan (PAL)

- Gonocoxite without apicodorsal lobe, tegmen pyramidal-tiara shape, parameral apodeme continuously sclerotized forming a central strip on dorsal side............................................ M. structura Rudzinski, 2006 : Taiwan ( ORI)

6. Dorsal lobe of gonostylus large and coracoid, arising from strongly inflated dorsal margin of gonostylus...................................................................... M. rhynchophysa ( Yang, Zhang & Yang, 1993) : Fujian (ORI)

- Dorsal lobe of gonostylus relatively small, and gonostylus not inflated in dorsal margin.......................................................................................... M. infernosa Rudzinski, 2006 : Fujian, Taiwan ( ORI)

7. Intercoxal lobe on the ventral side of genitalia broad, and tegmen hidden by the long and dense setae on the intercoxal lobe............................................................ M. hippai Menzel, 1995 : Tibet; Nepal, Burma ( ORI)

- Intercoxal lobe on the ventral side of genitalia narrow or absent, and tegmen never hidden by setae on the intercoxal lobe... 8

8. Hypopygium with a rounded tegmen, the gonostylus kidney-shaped ( Figs 8 A–B)....................................................................... M. orthacantha ( Yang, Zhang & Yang, 1993) : Fujian, Inner Mongolia ( PAL, ORI)

- Tegmen of hypopygium not rounded, the gonostylus not kidney-shaped ( Figs 10 B, 12B).............................9

9. Dorsal lobe of gonostylus large and coracoid, arising from strongly inflated dorsal margin of gonostylus ( Fig. 12 A).......................................................................... M. subrhynchophysa sp. nov.: Yunnan (ORI)

- Dorsal lobe of gonostylus relatively small, and gonostylus not inflated on dorsal margin ( Figs 9 A, 10A)................ 10

10. Inner side of gonostylus significantly concaved with a long and strong apical tooth arising from its dorsal medial margin ( Figs 10 A, D).............................................................. M. scrobiculata sp. nov.: Yunnan (ORI)

- Inner side of gonostylus not significantly concaved ( Figs 1 A, 9A).............................................. 11

11. Inner side of gonostylus inflated or slightly inflated ( Figs 2 A, 9A)..............................................12

- Inner side of gonostylus not inflated, slender ( Fig. 1 A).......................................................19

12. Intercoxal lobe absent ( Fig. 9 C)................................................ M. ovoidea sp. nov.: Fujian ( ORI)

- Intercoxal lobe present ( Figs 2 B, 3C, 4A, 5A, 13A).........................................................13

13. Gonostylus with an apical tooth arising from a well-developed dorsal lobe ( Figs 2 A, 5A–B).........................14

- Gonostylus with an apical tooth arising from a relatively small dorsal lobe ( Figs 3 C, 4A)............................16

14. Tegmen slightly and smoothly curved, dorsal lobe of gonostylus subcylindrical ( Figs 2 A–B)........................................................................................... M. cylindrata sp. nov.: Yunnan, Tibet (ORI*)

- Tegmen nearly rectangular and apically truncate, dorsal lobe of gonostylus large (Figs 5A–B, 13A–B).................15

15. Dorsal lobe arising just medially of the apex of gonostylus (Figs 5A–C)............................................................................ M. megalocornuta ( Mohrig & Menzel, 1992) : Zhejiang, Fujian, Taiwan; Japan ( ORI)

- Dorsal lobe arising from the subapical part of gonostylus ( Figs 13 A–B)...... M. truncatula sp. nov.: Zhejiang, Fujian ( ORI)

16. Gonostylus greatly inflated, approximately spherical ( Figs 3 A–B, 4A–B)....................................... 17

- Gonostylus slightly inflated, elongate oval ( Fig. 1 A).........................................................19

17. Gonostylus with two dorsal lobe, tegmen trapezoid................... M. hylotoma Menzel & Mohrig, 1999 : Nepal ( ORI)

- Gonostylus only with one dorsal lobe, tegmen not trapezoid...................................................18

18. Tegmen triangular ( Figs 3 A–C).............................................. M. globulosa sp. nov.: Tibet ( ORI *)

- Tegmen evenly curved apically ( Figs 4 A, B).............................. M. inflata sp. nov.: Zhejiang, Hubei (PAL*)

19. Tegmen pyramidal................. M. composivera Rudzinski, 2006 : Fujian, Yunnan, Tibet, Shaanxi, Taiwan ( PAL, ORI)

- Tegmen trapezoid.................................................... M. retarda Rudzinski, 2006 : Taiwan ( ORI)

20. Intercoxal lobe on ventral side of genitalia absent, tegmen pyramidal ( Fig. 1 C)......... M. angusta sp. nov.: Shaanxi ( PAL)

- Intercoxal lobe on ventral side of genitalia present, tegmen large and trapezoidal..................................................................................................... M. rusticana Rudzinski, 2006 : Taiwan (ORI)

Figures

FIGURE 1. Mohrigia angusta sp. nov., male. holotype. A, right gonostylus, ventral view; B, right gonostylus, dorsal view; C, gonocoxite, ventral view; D, palps, lateral view; E, 4 th flagellomere, lateral view; F, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 2. Mohrigia cylindrata sp. nov., male, holotype. A, left gonostylus, ventral view; B, part of hypopygium, ventral view; C, palps, lateral view; D, 4 th flagellomere, lateral view; E, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 3. Mohrigia globulosa sp. nov., male, holotype. A, right gonostylus, ventral view; B, right gonostylus, dorsal view; C, gonocoxite, ventral view; D, palps, lateral view; E, 4 th flagellomere, lateral view; F, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 4. Mohrigia inflata sp. nov., male, holotype. A, part of hypopygium, ventral view; B, right gonostylus, ventral view; C, palps, lateral view; D, 4 th flagellomere, lateral view; E, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 7. Mohrigia notolobos sp. nov., male, holotype. A, left gonostylus, ventral view; B, left gonostylus, dorsal view; C, tegmen, ventral view; D, gonocoxite, ventral view; E, palps, lateral view; F, 4 th flagellomere, lateral view; G, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 8. Mohrigia orthacantha (Yang, Zhang & Yang, 1993), male, neotype. A, left gonostylus, ventral view; B, part of hypopygium, ventral view; C, palps, lateral view; D, 4 th flagellomere, lateral view; E, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 9. Mohrigia ovoidea sp. nov., male, holotype. A, right gonostylus, dorsal view; B, right gonostylus, ventral view; C, gonocoxite, ventral view; D, palps, lateral view; E, 4 th flagellomere, lateral view; F, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 10. Mohrigia scrobiculata sp. nov., male, holotype. A, left gonostylus, ventral view [SM 00711]; B, gonocoxite, ventral view [SM 00711]; C, gonocoxite (paratype), ventral view [SM 00678]; D, gonostylus, dorsal view [SM 00711]. Scale bar = 0.10 mm.

FIGURE 12. Mohrigia subrhynchophysa sp. nov., male, holotype. A, left gonostylus, ventral view; B, part of hypopygium, ventral view; C, palps, lateral view; D, 4 th flagellomere, lateral view; E, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 13. Mohrigia truncatula sp. nov., male, holotype. A, part of hypopygium, ventral view; B, right gonostylus, ventral view; C, palps, lateral view; D, 4 th flagellomere, lateral view; E, apex of foretibia, posteroventral view. Scale bar = 0.10 mm.

FIGURE 14. Wings, dorsal view. A, Mohrigia cylindrata sp. nov. (holotype); B, Mohrigia globulosa sp. nov. (holotype); C, Mohrigia angusta sp. nov. (holotype); D, Mohrigia notolobos sp. nov. (holotype); E, Mohrigia scrobiculata sp. nov. (holotype); F, Mohrigia orthacantha (Yang, Zhang & Yang, 1993) (neotype). Scale bar = 0.50 mm.