Chrysotus Explained

Chrysotus is a genus of flies in the family Dolichopodidae.^[1] It is one of the largest genera in the subfamily Diaphorinae, with more than 460 species.^{[2] [3]} However, the genus is probably paraphyletic, and possibly even polyphyletic, with respect to several related genera such as Achradocera, Falbouria and Lyroneurus.^{[3] [4]}

Subgenera and species groups

The genus has two subgenera:

• Angiopus Meuffels & Grootaert, 1996 – includes only C. halteratus
• Chrysotus Meigen, 1824 – all other species are placed in this subgenus, split into many species groups and subgroups:
  • C. albipalpus species group
  • C. cilipes species group – Palaearctic
  • C. javanensis species group
  • C. laesus species group (22 species)^[5] – Palaearctic + Oriental
    • C. adunatus species subgroup (1) – includes only C. adunatus
    • C. brevicercus species subgroup (12)
    • C. nudisetus species subgroup (5)
    • C. laesus species subgroup (3)
    • C. trapezinus species subgroup (1) – includes only C. trapezinus
  • C. leigongshanus species group (59 species)^[3] – China
    • C. apicibifidus species subgroup (22)
    • C. apicirotundus species subgroup (9)
    • C. apicisetosus species subgroup (9)
    • C. chishuiensis species subgroup (10)
    • C. comminus species subgroup (2)
    • C. daozhenus species subgroup (3)
    • 4 unplaced species
  • C. longipalpus species group (12 species)^[6]
  • C. mediotinctus species group (5 species)^[7] – South America
  • C. niger (?) species group
  • C. papuanus species group (107 species)^[2] – China
    • C. abatus species subgroup (14)
    • C. abdominus species subgroup (88)
    • C. araeobasus species subgroup (3)
    • C. papuanus species subgroup (1) – includes only C. papuanus
    • C. zhuae species subgroup (1) – includes only C. zhuae
  • C. philtrum species group

See also

• List of Chrysotus species

Notes and References

1. Wang. M.. Yang. D.. Grootaert. P.. New species of Dolichopodidae (Diptera) from China. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Entomologie. 2008. 78. 251–257.
2. Wei. Lianmeng. Lei. Zhang. Zhou. Zhengxiang. 2014. A review of the genus Chrysotus Meigen (Diptera: Dolichopodidae) from China with definition of papuanus species group. Oriental Insects. 48. 3–4. 187–298. 10.1080/00305316.2015.1005960. 82382090.
3. Lianmeng. Wei. 2018. A review of the genus Chrysotus Meigen (Diptera: Dolichopodidae) from China with definition of the leigongshanus species group. Oriental Insects. 52. sup1. 1–158. 10.1080/00305316.2017.1421338. 90584996.
4. Capellari. R.S.. Amorim. D.S.. 2012. Systematic position of the monotypic Azorean genus Falbouria Dyte with notes on the definition of Chrysotus Meigen (Diptera: Dolichopodidae). Zootaxa. 3489. 81–88. 10.11646/zootaxa.3489.1.5.
5. Zhou. Zhengxiang. Wei. Lianmeng. 2017. Chrysotus Meigen (Diptera: Dolichopodidae) from China with descriptions of five new species belonging to the Ch. laesus-group. Oriental Insects. 51. 3. 227–245. 10.1080/00305316.2016.1276486. 90129686.
6. Runyon. Justin B.. Capellari. Renato S.. 2018. Palpi aplenty: new species in the Chrysotus longipalpus species group (Diptera: Dolichopodidae). Zootaxa. 4399. 4. 579–585. 10.11646/zootaxa.4399.4.8. 29690297.
7. R. S.. Capellari. D. de S.. Amorim. 2014. New combinations and synonymies for Neotropical species of Diaphorinae (Diptera: Dolichopodidae). PDF. Contributions to Entomology. 10.21248/contrib.entomol.64.2.375-381. free.