Orphnabaccha Hull, 1949

Mengual, Ximo, Miranda, Gil Felipe G. & Thompson, F. Christian, 2018, Unraveling Ocyptamus and the Baccha legacy (Diptera: Syrphidae): redefinition of groups and new species descriptions, Zootaxa 4461 (1), pp. 1-44: 13

publication ID

https://doi.org/10.11646/zootaxa.4461.1.1

publication LSID

lsid:zoobank.org:pub:C0F0C0EF-D22C-47ED-9400-F50A8E122DD0

persistent identifier

http://treatment.plazi.org/id/4C610E46-E465-FF89-FF0F-FF7C0CAFB7DF

treatment provided by

Plazi

scientific name

Orphnabaccha Hull, 1949
status

 

Genus Orphnabaccha Hull, 1949  stat. rev.

Figs 8 View Figure , 55–60 View Figure , 104, 105 View Figure .

Orphnabaccha Hull, 1949a: 93  , as a genus. Type species: Baccha coerulea Williston, 1891  (original designation).

Mercurymyia Fluke, 1950a: 140, as a subgenus of Stenosyrphus Matsumura & Adachi, 1917  (jun. syn. of Melangyna Verrall  ). Type species: Epistrophe caldus Walker, 1852  (original designation). Synonymy by Thompson et al. (1976: 11).

Ocyptamus caldus  species group. Thompson (1981).

Ocyptamus  ( Orphnabaccha  ). Mengual et al. (2012).

Ocyptamus amplus  species group. Miranda et al. (2016). 

Diagnosis. Frons wide. Ocellar triangle distanced three ocellus-width from the eye margin. Dorsal lobe of calypter with long pile. Metasternum usually pilose. Usually with parallel-sided elongated to slightly oval abdomen, some species slightly petiolate.

Comments. Flies from this group usually have broader abdomens, and some species are very Syrphus  -like. Others are darker, with shiny flattened pile on the abdomen. Not all Orphnabaccha  species have the distinctive pilose metasternum, but they can be further distinguished from the other groups presented here by a usually broader face, female ocellar triangle distinctly distanced from the eye margin and dorsal lobe of the calypter with long pile. Currently, there are three species groups within the genus, each with distinct types of genitalia ( Vockeroth 1969): 1) O. ampla  species group ( Syrphus  -like flies with bifurcate postgonites); 2) O. calda  species group (species with arched yellow fascia on the abdomen, postgonite tooth-like, and distiphallus with large spines); and 3) O. coerulea  species group (black abdomen with shiny flattened pile and lamellate postgonites).

Species list (31 species): O. aequilineata ( Hull, 1945)  , O. agilis ( Bigot, 1884b)  , O. ampla ( Fluke, 1942)  , O. calda ( Walker, 1852)  , O. coerulea ( Williston, 1891)  , O. decipiens ( Williston, 1891)  , O. delimbata ( Enderlein, 1938)  , O. diversa ( Williston, 1891)  , O. dolorosa ( Hull, 1950)  , O. elegans ( Giglio-Tos, 1892)  , O. erratica ( Williston, 1888)  , O. flavigaster ( Hull, 1944d)  , O. fraterna ( Bigot, 1884a)  , O. fuscicosta ( Lynch Arribálzaga, 1891)  , O. golbachi ( Fluke, 1950b)  , O. jactator ( Loew, 1861)  , O. lanei ( Fluke, 1950b)  , O. laticauda ( Curran, 1941)  , O. lativentris ( Curran, 1941)  , O. lauta ( Giglio-Tos, 1892)  , O. limbus ( Enderlein, 1938)  , O. nodosa ( Hull, 1930)  , O. opaca ( Fluke, 1950b)  , O. priscilla ( Hull, 1943b)  , O. pteronis ( Fluke, 1942)  , O. superba ( Thompson, 1981)  , O. tiarella ( Hull, 1944b)  , O. trabis ( Fluke, 1942)  , O. tribinicincta ( Enderlein, 1938)  , O. virga ( Fluke, 1942)  , O. volcana ( Fluke, 1942)  .

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Diptera (awaiting allocation)

Loc

Orphnabaccha Hull, 1949

Mengual, Ximo, Miranda, Gil Felipe G. & Thompson, F. Christian 2018

2018
Loc

Orphnabaccha

: 93