Minettia (Plesiominettia) zhejiangica, Shi, Li, Gaimari, Stephen D. & Yang, Ding, 2015

Shi, Li, Gaimari, Stephen D. & Yang, Ding, 2015, Five new species of subgenus Plesiominettia (Diptera, Lauxaniidae, Minettia) in southern China, with a key to known species, ZooKeys 520, pp. 61-86 : 67-71

Taxon classification Animalia Diptera Lauxaniidae

Minettia (Plesiominettia) zhejiangica sp. n. Figs 21-25, 39-40, 47

Type material.

Holotype: ♂ (CAUC), CHINA, Zhejiang: Longquan, Fengyangshan National Nature Reserve, Fengyang Lake, 28. vii. 2007, Yajun Zhu. Paratypes: CHINA, Zhejiang: 1 ♂, 2 ♀♀ (CAUC), Longquan, Fengyangshan National Nature Reserve, 26. vii. 2007, Yajun Zhu; 1 ♂ (CAUC), Longquan, Fengyangshan National Nature Reserve, Huangmaojian, 27. vii. 2007, Yajun Zhu; 1 ♀ (CAUC), Longquan, Fengyangshan National Nature Reserve, Huangmaojian, 29. vii. 2007, Yajun Zhu; 1 ♀ (CAUC), Longquan, Fengyangshan National Nature Reserve, Qixingtan, 1. viii. 2007, Yajun Zhu; 1 ♂, 1 ♀ (CAUC), Lin’an, Tianmushan National Nature Reserve, 19. vii. 2007, Yajun Zhu.

Etymology.

The new species is named after the type locality, Zhejiang Province.

Diagnosis.

Frons with sparse whitish gray pollinosity. Face pale brown on dorsal 1/2 and black on ventral 1/2, with sparse whitish gray pollinosity; parafacial yellow, inner margin blackish brown on ventral 1/2. Arista short plumose, rays of arista with longest setulae as long as 1/2 height of 1st flagellomere. Mesonotum with anteriormost dorsocentral setae situated on basal 1/3 between transverse scutal suture and scutoscutellar suture. Male genitalia: surstylus with a curved needle-like inner process and a geniculate outer process, acute apically.

Description.

Male. Body length 6.0-6.2 mm, wing length 5.9-6.3 mm. Female. Body length 5.6-6.2 mm, wing length 5.6-6.7mm.

Head pale brown. Frons with sparse whitish gray pollinosity, pale yellow on narrow anterior margin; ocellar triangle grayish black; ocellar setulae developed, longer than posterior fronto-orbital setae, anterior fronto-orbital setae reclinate, slightly shorter than posterior fronto-orbital setae. Face pale brown on dorsal 1/2 and black on ventral 1/2, with sparse whitish gray pollinosity; parafacial yellow, blackish brown on ventral 1/3, inner margin glossy black. Gena about 1/5 height of eye. Antenna brownish yellow, 1st flagellomere pale brown on apical 2/3, 1st flagellomere 2.0 times longer than high; arista black except yellow at base, short plumose, rays of arista with longest setulae as long as 1/2 height of 1st flagellomere. A grayish black triangular spot present between eye and base of antenna. Proboscis brown and palpus black.

Thorax brown with grayish pollinosity, anterior half sparse and posterior half dense. Mesonotum with 0+3 dorsocentral setae (anteriormost dorsocentral setae situated on basal 1/3 of mesonotum), acrostichal setulae in 8 rows; a pair of long acrostichal setulae present in front of prescutellar setae, prescutellar setae longer than 1 st postsutural dorsocentral setae; 1 strong intra-alar seta. Anepisternum black and katepisternum brown, both with sparse grayish pollinosity; 1prescutellar setae, 2 katepisternal setae. Scutellum blackish brown with grayish pollinosity. Legs with femora black; tibiae brown except yellow on basal tip; tarsi dark yellow except tarsomeres 3-5 pale brown. Fore femur with 5-6 posteroventral setae and 10 posterodorsal setae; fore tibia with 1 short preapical anterodorsal seta and 1 short apicoventral seta. Mid femur with 6 anterior setae and 1 apical posterior seta; mid tibia with 1 strong preapical anterodorsal seta and 2 strong apicoventral seta. Hind femur with a weak preapical anterodorsal seta; hind tibia with 1 preapical anterodorsal seta and 1 short apicoventral seta. Wing (Fig. 47) slightly yellow, pale brown at base; costa with 2nd (between R1 and R2+3), 3rd (between R2+3 and R4+5) and 4th (between R4+5 and M1) sections in proportion of 5:1.5:1; r-m at middle of discal cell; ultimate and penultimate sections of M1 in proportion of 1:1.2; ultimate section of CuA1 about 1/6 of penultimate. Halter yellow.

Abdomen black with grayish white pollinosity. Male genitalia (Figs 21-25): syntergosternite 7+8 circular with a long irregular ventral process and many dorsal setulae; epandrium slender, slightly projecting at anterior ventral corner; surstylus with a curved aciculiform inner process and a geniculate outer process, acute apically; hypandrium inverted–U shape, hypandrial apodeme very short; postgonite short claviform in ventral view; phallus broad at middle, three acute processes and many spinules on membranous section in ventral view and slender and round apically in lateral view; phallapodeme small, projecting forward. Female sternite 7 rectangular and sternite 8 semicircular; spermathecae 1+2, nearly rounded and stem brown at base (Figs 39-40).

Remarks.

The new species is similar to Minettia (Plesiominettia) longistylis Sasakawa from China (Taiwan) in size (large), mesonotum brown with grayish pollinosity, a pair of long acrostichal setulae present in front of prescutellar setae. It can be separated from the latter by the arista being short plumose, the rays of arista having longest setulae as long as 1/2 height of antennal 1st flagellomere; the mesonotum having acrostichal setulae in 8 rows; the mid tibia having 2 posteroventral setae; the surstylus having a curved aciculiform inner process and a geniculate outer process, acute apically. In Minettia (Plesiominettia) longistylis , the arista is pubescent and the rays of arista have longest setulae as long as 1/4 height of antennal 1st flagellomere; the mesonotum has acrostichal setulae in 10 irregular rows; the mid tibia has 1 posteroventral seta; the surstylus is very long ( Sasakawa 2002).

Distribution.

China (Zhejiang).