Mohrigia inflata Shi & 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 : 78-81

Mohrigia inflata Shi & Huang , sp. nov.

( Figs 4 , 15 B, 16)

Lycoriella longirostris Yang, Zhang & Yang, 1995: 210 and 211 (misidentification, in part).

Material examined. Holotype, male. CHINA . Hubei, Mts. Shennongjia, Yinyuhe, sweep-net, 16-V-2012, leg. Kai Shi [SM01637]. Paratypes, Zhejiang. Kaihua , Mt. Gutianshan : 2 males, 17-VII-1992, leg. Xue-Xin Chen [SM10009, SM10011] ; 1 male, yellow pan trap, 21-VII-1992, leg. Hong Wu [SM10010] (all males labeled as paratypes of Lycoriella longirostris, Yang, Zhang & Yang, 1995 ). 1 male, Anji, Mt. Longwangshan , sweep-net, 1- V-2012, leg. Kai Shi [SM01605].

Diagnosis. T he species is characterized by its ovate gonostylus with a strong apical tooth arising from a strong dorsal lobe, three flagellate setae on the ventral mesial margin of gonostylus; hypopygium with a small conical setose intercoxal lobe; tegmen slightly and smoothly curved, parameral apodeme continuously sclerotized forming a central strip on dorsal side and laterally sclerotized.

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

Head ( Figs 4 C, D). Eye bridge with 3 rows of facets. Prefrons with 15 setae. Clypeus with 1–3 setae. Maxillary palps 3-segmented, basal segment with 2 setae. Length/width index of 4th flagellomere: 2.60–3.54.

Thorax. Anterior pronotum with 3–6 setae, episternum 1 with 5–7 setae. Wings ( Fig. 15 B). Wing length 2.12– 2.32 mm, width/length: 0.42–0.47. c/w: 0.61–0.72. R1/R: 0.70–0.80. M, stM and CuA nonsetose. r-m with 0–4 setae. Legs ( Fig. 4 E). Length of spur/width of foretibia 0.87–1.10. Length of femur/length of metatarsus: foreleg 1.17–1.48. Length of metatarsus/length of tibia: foreleg 0.56–0.64, hind leg 0.48–0.54. Length of hind tibia/length of thorax 1.14–1.39. Claws toothed.

Hypopygium ( Figs 4 A, B). The gonocoxite as long as the gonostylus. The gonostylus ovate, densely setose on the apicoventral part, with a strong apical tooth arising from a strong dorsal lobe, three flagellate setae on the ventral mesial margin of gonostylus present. Hypopygium with a small conical setose intercoxal lobe. Tegmen slightly and smoothly curved, parameral apodeme continuously sclerotized forming a central strip on dorsal side and laterally sclerotized. Aedeagus relatively short. Sternite 10 with 1 seta on each half.

Distribution. China (Zhejiang, Hubei, Fig. 16 ).

Remarks. Three paratypes of Lycoriella longirostris , are here treated as M. inflata sp. nov. The argument for the misidentification is discussed above in the remarks of M. megalocornuta ( Mohrig & Menzel, 1992) .

The new species is similar to M. globulosa ( Figs 3 A–C) in both having a much inflated gonostylus, but the gonostylus is relatively ovate in this specis, and nearly spherical in M. globulosa . Difference is also seen in the shape of the tegmen, which is smoothly curved in M. inflata , while triangular in M. globulosa .

Etymology. This species is named after its inflated gonostylus, from the Latin adjective inflatus, meaning inflated.

Figures

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 15. Wings, dorsal view. A, Mohrigia ovoidea sp. nov. (holotype); B, Mohrigia inflata sp. nov. (holotype). C, Mohrigia truncatula sp. nov. (holotype); D, Mohrigia megalocornuta (Mohrig & Menzel, 1992). 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.