Mohrigia notolobos Xu & Huang, 2017

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 : 84

Mohrigia notolobos Xu & Huang , sp. nov.

( Figs 7 , 14 D, 16)

Material examined. Holotype, male. China, Yunnan. Baoshan, Longyang, Lujiang , Nankang , 24°48.376'N, 98°47.342'E, 1847 m, 9-V-2009, leg. Su-Jiong Zhang [SM00938].

Diagnosis. This species is unique by an apicodorsal lobe bearing three long setae on gonocoxite, its clavate gonostylus, and relatively longer aedeagus.

Description (male). Color. Head and thorax dark brown; antennae, palps, abdomen and hypopygium yellowish brown; mesonotum brown; legs pale brown; wings fumose.

Head ( Figs 7 E, F). Eye bridge narrow, with 3 rows of facets, ommatidia reduced medially. Maxillary palps 2- segmented, basal segment with 2 setae; 2nd segment with 5 setae. Length/width index of 4th flagellomere: 2.08.

Thorax. Anterior pronotum with 1 seta, episternum 1 with 1 seta. Wings ( Fig. 14 D). Wing length 1.85 mm, width/length: 0.39. c/w: 0.84. R1/R: 0.53. r-m, stM, M1 and M2 bare, CuA1 and CuA2 bare. Legs ( Fig. 7 G). Length of spur/width of foretibia 0.98. Length of femur/length of metatarsus: foreleg 1.51. Length of metatarsus/length of tibia: foreleg 0.51, hind leg 0.46. Length of hind tibia/length of thorax 1.22. Claws toothed.

Hypopygium ( Figs 7 A–D). Gonocoxite as long as gonostylus. Gonostylus slender, densely setose on apicoventral part, with an apical tooth arising from a subapical dorsal lobe. Hypopygium with a conical setose intercoxal lobe, three long setae arising from apicodorsal lobe of gonocoxite. Tegmen slightly and smoothly curved, parameral apodeme laterally sclerotized on tegmen. Aedeagus relatively longer than other Mohrigia species. Sternite 10 with 1 seta on each half.

Distribution. China (Yunnan, Fig. 16 ).

Etymology. This species is named after the dorsal lobe on the gonocoxite, a Latinized Greek compound word from the nouns nōton (back) and lobos (lobe). It is an invariable noun in apposition.

Figures

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 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.

FIGURE 16. Geographical distribution of Mohrigia from China. The different coloured shapes refer to different collecting sites of the species.