Minettia (Plesiominettia) spiniphallata, Li & Bai & Yang, 2023

Li, Wenliang, Bai, Yingming & Yang, Ding, 2023, The genus Minettia Robineau-Desvoidy, 1830 (Diptera: Lauxaniidae: Lauxaniinae) from the Oriental Region with descriptions of seventeen new species, Zootaxa 5256 (3), pp. 201-249 : 232-233

Minettia (Plesiominettia) spiniphallata sp. nov.

( Figs. 101–109 )

Diagnosis. Orbits yellow; Frons with two black longitudinal stripes along fronto-orbital rows extending to ocellar triangle and one yellow triangular longitudinal stripe extending from ocellar triangle to anterior margin of frons; mesonotum with three white longitudinal stripes extending to scutoscutellar suture; 1+3 dorsocentral setae.

Description. MALE. Body length 4.8 mm, wing length 6.3 mm. FEMALE. Unknown.

Head ( Fig. 101 ) blackish brown, with grayish white pruinescence, orbits yellow. Face black. Frons as long as wide and parallel-sided, with two black longitudinal stripes along fronto-orbital rows extending to ocellar triangle and one yellow triangular longitudinal stripe extending from ocellar triangle to anterior margin of frons; ocellar triangle black, ocellar setae stubby, almost as long as anterior fronto-orbital setae; anterior fronto-orbital setae reclinate, almost as long as 1/2 length of posterior fronto-orbital setae. Gena about 1/5 height of eye. Antenna brown, first flagellomere yellow at base, 1.6 times longer than high; arista blackish brown except paler basally, pubescent with longest setulae shorter than 1/4 height of first flagellomere. Proboscis blackish brown, with white and black setulae; palpus black with black setulae.

Thorax ( Fig. 104 ) blackish brown, with grayish white pruinescence. Mesonotum with three white longitudinal stripes extending to scutoscutellar suture; 1+3 dorsocentral setae; acrostichal setulae in eight irregular rows, a pair of strong prescutellar setae, longer than first post-sutural dorsocentral setae. One anepisternal seta, two katepisternal setae. Fore legs blackish brown, fore tarsomeres 1–3 yellow, tarsomeres 2–3 black on basal dorsum, tarsomeres 4–5 black; mid and hind legs blackish brown, tarsi yellow except brown at tip. Fore femur with seven posterior dorsal setae, seven posterior setae and seven posterior ventral setae; fore tibia with one dorsal preapical seta and one short apical ventral seta. Mid femur with eight anterior setae; mid tibia with one strong dorsal preapical seta and three strong apical ventral setae. Hind femur with one preapical anterior dorsal seta; hind tibia with one dorsal preapical seta. Wing ( Fig. 102 ) hyaline and yellow at base; costa with 2nd (between R 1 and R 2+3), 3rd (between R 2+3 and R 4+5), and 4th (between R 4+5 and M 1) sections in proportion of 9.0: 2.0: 1.5; r-m before middle of discal cell; ultimate and penultimate sections of M 1 in proportion of 6.7: 3.8; ultimate section of CuA 1 about 1/6 of penultimate. Haltere pale yellow, except knob black.

Abdomen black, with grayish white pruinescence. Male genitalia ( Figs. 105–109 ): syntergosternite circular and broad, nearly triangular in lateral view. Surstylus stubby, separated from epandrium, curved backward in lateral view and curved inward in posterior view; hypandrium without inner process. Postgonite short, with setae of different lengths. Phallapodeme stubby, shorter than phallus; phallus consisting of one ventral sclerite and one dorsal sclerite, with dense small membranous spiny processes on apical 1/2.

Type material. Holotype ( CAUC): ♁, CHINA, Yunnan Province: Baoshan Tengchong Zizhicun , 2007. V. 31, Xingyue Liu.

Distribution. China (Yunnan)

Remarks. The new species is somewhat similar to Minettia (Plesiominettia) orbitalis sp. nov. (see remarks under Minettia (Plesiominettia) orbitalis sp. nov.) from Yunnan.

Etymology. Latin, spiniphallata , referring to the phallus of new species with dense small membranous spiny processes on apical 1/2.

Figures

FIGURES 101–104. Minettia (Plesiominettia) spiniphallata sp. nov. Male. 101. head, anterior view; 102. wing; 103. habitus, lateral view; 104. thorax, dorsal view.

FIGURES 105–109. Minettia (Plesiominettia) spiniphallata sp. nov. Male. 105. syntergosternite and epandrium, lateral view; 106. epandrial complex, posterior view; 107. syntergosternite, anterior view; 108. phallic complex, ventral view; 109. phallic complex, lateral view. Scale 1 mm.