Scatella stagnalis (Fallén), Fallen

Yang, Junhua Zhang Ding, 2005, Review of the subgenus Scatella Robineau­Desvoidy, 1830 from China (Diptera: Ephydridae), Zootaxa 931, pp. 1-11 : 6-8

publication ID

https://doi.org/ 10.5281/zenodo.171138

DOI

https://doi.org/10.5281/zenodo.6267277

persistent identifier

https://treatment.plazi.org/id/E5508785-536C-5409-FEE7-DC92EA58FD5C

treatment provided by

Plazi

scientific name

Scatella stagnalis (Fallén)
status

 

Scatella stagnalis (Fallén) View in CoL

( Figs. 20–29 View FIGURES 20 – 29 )

Ephydra stagnalis Fallén, 1813: 248 View in CoL . Type locality: Sweden.

Ephydra lacustris Meigen, 1830: 118 View in CoL . Type locality: not given (? former Germany). Scatella buccata Robineau­Desvoidy, 1830: 801 View in CoL . Type locality: not given (? France). Scatella tateyamana Matsumura, 1915: 225 View in CoL . Type locality: not given (? Japan).

Diagnosis. Oral seta longer than width of antennal segment 3; scutellum with 2 pairs of sc, lateral sc short. Male T3 as long as T4, phallapodeme slender with 9–12 distinctly transverse stripes. Female S7 divided into two small sclerites.

Description. Male body length 2.5 mm, wing length 2.7 mm.

Head subshiny black, with thin rusty pollen; mesofrons nearly polished with reddish brown pollen. Setulae and setae on head black; 1outer vt as long as 1 inner vt; 1 pair of strong oc; 4 lateroclinate orb, the first and the third thin and short. Protruding face black with rusty pollen, with 2 long dorsoclinate facial setae on each side. Vibrissa very strong. Oral seta longer than width of antennal segment 3. Antenna black; arista short pubescent. Eye­to­cheek ratio, male 1: 0.26.

Thorax subshining black; mesonotum reddish brown microtomentose. Setulae and setae on thorax black. Pres dc short; no posts acr, a pair of strong acr just in front of suture; 2–3 humeral setae; anterior npl longer than posterior npl; 1 psa longer than sa; scutellum with 2 pairs of sc, lateral sc short; mesopleuron with 1 long seta; sternopleuron with 1 strong seta on upper portion. Legs subshiny black with grey pollen; tarsi brown. Setulae and setae on leg black. Fore femur with row of pv as long as width of fore femur. Wing brown with five faint hyaline spots, spots located cell R4+5 near tip of wing oval, Spots located cell R2+3 square; veins near spots not bent; first costal section moderately stout in male. Halter yellowish.

Abdomen subshining black with rusty pollen.

Male genitalia ( Figs. 21–27 View FIGURES 20 – 29 ). Male T3 as long as T4; phallapodeme slender with 9–12 distinctly transverse stripes.

Female. Body length 2.6 mm, wing length 2.8 mm. Female genitalia ( Figs. 28–29 View FIGURES 20 – 29 ). S7 divided into two small sclerites; ventral receptacle large, tube­like, about 3.3 times as long as wide.

Specimens examined. 1 male, Tibet: Mangkang, 16. 0 6. 1976, leg. Xuezhong Zhang; 1 female, Tibet: Mangkang, 16. 0 6. 1976, leg. Xuezhong Zhang.

Distribution. China (Tibet). This species is distributed worldwide.

Remarks. This species was redescribed by Olafsson (1991) in details with figurations of the male genitalia.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Ephydridae

Genus

Scatella

Loc

Scatella stagnalis (Fallén)

Yang, Junhua Zhang Ding 2005
2005
Loc

Ephydra lacustris

Matsumura 1915: 225
Meigen 1830: 118
Robineau-Desvoidy 1830: 801
1830
Loc

Ephydra stagnalis Fallén, 1813 : 248

Fallen 1813: 248
1813
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