Genus Chaetotheresia Townsend, 1931

(Figures 1–4)

Chaetotheresia Townsend, 1931a: 346 .

Type species: Musca crassa Wiedemann, 1830, by original designation.

References

Townsend 1936: 146 (diagnosis of adults and immatures of Theresiini, including Chaetotheresia); Townsend 1938: 394 (redescription of Chaetotheresia); Guimarães 1971: 36 (catalogue); Evenhuis et al. 2015: 74 (catalogue of Townsend̍s genera); O̍ Hara and Henderson 2020a: 19 (World checklist of tachinid genera); O̍ Hara and Henderson 2020a: 36 (checklist of World Tachinidae).

Included species

Chaetotheresia crassa (Wiedemann, 1830: 387) (Musca) . Male syntypes: Brazil (NHMW, examined).

Chaetotheresia brasiliana Brauer and Bergenstamm, 1891: 364, 60 ( Myiomima). Female holotype: Brazil (NHMW, not examined)

Chaetotheresia insolita (Walker, 1853: 318) (Dexia) . Male syntypes: Brazil (NHMUK, examined). comb. nov.

Diagnosis

Postpedicel 2× the length of the scape and pedicel combined; facial carina present and well developed (dividing the antennae); proboscis about equal to head height; lower facial margin protruding (visible in profile); thorax with 4 to 5 katepisternal setae; abdomen broad, with syntergite 1 + 2 with 1–3 short median marginal setae, 4–5 pairs of median marginal setae and 1 pair of discal setae on tergite 3, tergites 4 and 5 with a row of median marginal setae (without discals), tergite 5 with a golden-greyish pruinosity.

Distribution

(São Paulo, Santa Catarina and Paraná states).

Key to species of Chaetotheresia Townsend, 1931 .

1 - Thorax with goldish pruinosity dorsally; abdomen blackish, syntergite 1 + 2 with 3 pairs of short median marginal setae ................. ................. C. crassa (Wiedemann, 1830)

- Thorax with whitish pruinosity dorsally; abdomen light brown, syntergite 1 + 2 with 1 pair short of median marginal setae ...................... ...................... C. insolita (Walker, 1853)