Chironomus oppositus, Walker, 1856, Walker, 1856

Martin, Jon, 2024, Redescription of the type specimen of Chironomus oppositus Skuse, 1856, CHIRONOMUS Journal of Chironomidae Research 2024 (38), pp. 1-3 : 1-2

publication ID	https://doi.org/ 10.5324/cjcr.v0i38.5862
DOI	https://doi.org/10.5281/zenodo.13952388
persistent identifier	https://treatment.plazi.org/id/03CD5B5A-FFC7-9529-84C9-685CDC1FFD2C
treatment provided by	Felipe
scientific name	Chironomus oppositus
status

Treatment

Results View in CoL

Coloration: Antennae and palps brown; thorax greenish, stripes, sternopleuron and pronotum brown, halteres greenish. Abdomen greenish with saddle spots. Legs greenish, only hind tarsi present and darkened.

Thoracic setae: Acrostichal not obvious; dorsocentral about 10+; prealar 6, 7; supraalar 1; scutellum with a posterior row of about 10 setae, anteriorly with about 4 setae.

Wing with anterior veins hardly darker than posterior, crossvein only slightly darkened. R4+5 ends slightly proximal to M, at 0.08 of the distance between Cu1 and M. R2+3 evanescent at tip, ending 0.34 of the distance between the apex of R1 and R4+5. Anal ends distal to f-CU, at 0.61 of the distance between f-Cu and apex of Cu2. Anal lobe well developed, right angled.

Wing length 4.56 mm, width 0.96 mm; 4 SCf on stem vein, squama fully fringed..

Legs: Many tarsi missing, only one of the hind legs complete, so only the hind LR able to be calculated;

Available leg lengths (mm) and proportions in Table 1 View Table 1 .

Abdominal segment TIX and hypopygium ( Fig. 1 View Figure 1 ): about 6 setae in individual pale areas near centre of TIX. SVo closest to D(e) of Strenzke (1959). IVo reaching only about half way along the anal point, with simple setae. Anal point long and slightly broadened at distal end, reaching about 2/3 of length of the gonostylus which is moderately broadened and narrows relatively gently over distal third.