Mohrigia angusta Xu & Huang,

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: 73

publication ID

https://doi.org/10.11646/zootaxa.4300.1.4

publication LSID

lsid:zoobank.org:pub:C116DDFE-623A-4B2A-9AE6-1F7421FFBEE6

persistent identifier

http://treatment.plazi.org/id/635987A0-FFB1-3F78-FF60-6F1F4D1D5F9B

treatment provided by

Plazi

scientific name

Mohrigia angusta Xu & Huang
status

sp. nov.

Mohrigia angusta Xu & Huang  , sp. nov.

( Figs 1View FIGURE 1, 14View FIGURE 14 C, 16)

Material examined. Holotype, male. China, Shaanxi. Ningshan, Niujiliang Nature Reserve, Gangou , 33°49.5532'N, 108°47.2403'E, 1778 m, 10-VIII-2013, leg. Jun Xu [SM01896].GoogleMaps 

Diagnosis. The species is characterized by its slender gonostylus a strong tooth arising from a subapical dorsal lobe, with two long flagellate setae on the inner side of the gonostylus; hypopygium without intercoxal lobe; tegmen pyramidal, parameral apodeme continuously sclerotized forming a central strip on dorsal side and a fingerlike process at the apex.

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

Head ( Figs 1View FIGURE 1 D, E). Eye bridge with 3 rows of facets. Maxillary palps 3-segmented, basal segment with 1 seta; 2nd segment with 8 setae; 3rd segment with 6 setae. Length/width index of 4th flagellomere: 3.24–3.52.

Thorax. Anterior pronotum with 3 setae, episternum 1 with 5 setae. Wings ( Fig. 14View FIGURE 14 C). Wing length 1.47 mm, width/length: 0.39. c/w: 0.71. R1/R: 0.58. r-m, stM, M1 and M2 bare, CuA1 and CuA2 bare. Legs ( Fig. 1View FIGURE 1 F). 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 1View FIGURE 1 A –C). The gonocoxite as long as the gonostylus. The gonostylus slender, densely setose on the apicoventral part, with a strong tooth arising from a subapical dorsal lobe, two long flagellate setae on the inner side of the gonostylus. Hypopygium without intercoxal lobe. Tegmen pyramidal, parameral apodeme continuously sclerotized forming a central strip on dorsal side and a finger-like process at the apex. Aedeagus relatively short. Sternite 10 with 1 seta on each half.

Distribution. China (Shaanxi, Fig. 16View FIGURE 16).

Remarks. This new species is very similar to M. rusticana, Rudzinski, 2006  and M. structura Rudzinski, 2006  in sharing a slender gonostylus with the subapical tooth arising from a dorsal lobe. A distinct difference is observed on the intercoxal lobe, since it is absent in the new species, while the other two species both have a small intercoxal lobe. Additionally, the tegmen is pyramidal in the new species and M. structura  , while trapezoidal in M. rusticana  . The new species and M. rusticana  have 3-segmented palps, while it is 2-segmented in M. structura  . Further differences could also be found on the sclerotized parameral apodeme.

Etymology. This species is named after its slender gonostylus, from the Latin adjective angustus, meaning long and narrow.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Sciaridae

Genus

Mohrigia