Hybobathus Enderlein, 1938, 1937

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 : 8-9

Genus Hybobathus Enderlein, 1938 stat. rev.

Figs 73 , 78, 81 .

Hybobathus Enderlein, 1938: 233 , as a genus. Type species: Hybobathus quadrilineatus Enderlein, 1938 (original designation). Hypobathus Fluke, 1956: 217. Misspelling.

Callisyrphus Frey, 1946: 154, as a genus. Type species: Syrphus rubricosus Wiedemann, 1830 (original designation). Calliscaeva Frey, 1946: 171 . Incorrect original spelling of Callisyrphus (revision by Fluke 1956: 199).

Baccha lineatus species group. Hull (1949a).

Ocyptamus lineatus species group. Thompson (1981), Miranda et al. (2016).

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

Diagnosis. Vertex/vertical triangle with white/silver microtrichia but with a dull black ocellar triangle. Dorsal occiput with a single row of pile. Scutum either covered in dense pale microtrichia with 3–4 vittae of absence of microtrichia or with three vittae of golden microtrichia that are joined together by a circular microtrichose area posteriorly. Wing with pattern of light brown/yellow and hyaline/pale areas. Petiolate abdomen. Abdominal terga with pairs of vittate markings.

Biology. Preys of this genus have not been reported for other ‘ Ocyptamus ’ groups (see Rojo et al. 2003). Larvae of Hybobathus norina ( Curran, 1941) feed on jumping plant lice ( Hemiptera : Psyllidae ) and thrips (Thysanoptera), and known larvae of H. lividus ( Schiner, 1868) and H. zenia ( Curran, 1941) are also predators of Thysanoptera (see Rojo et al. 2003).

Comments. The species of this genus can be easily recognized by the overall pale color, the dull black ocellar triangle surrounded by white microtrichia and abdominal terga with patterns of pale vittae. The larger flies of this genus belong to the H. arx species group.

Species list (20): H. anera ( Curran, 1939) , H. cobboldia ( Hull, 1958) , H. diffusus ( Curran, 1939) , H. flavipennis ( Wiedemann, 1830) , H. idana ( Curran, 1941) , H. lineatus ( Macquart, 1846) , H. lividus ( Schiner, 1868) , H. macropyga ( Curran, 1941) , H. norina ( Curran, 1941) , H. notatus ( Loew, 1866) , H. pennatus ( Hull, 1943b) , H. quadrilineatus Enderlein, 1938 , H. rubricosus ( Wiedemann, 1830) , H. ryl ( Hull, 1943b) , H. silacea ( Austen, 1893) , H. thecla ( Hull, 1943b) , H. vampyrus ( Hull, 1943b) , H. vittiger ( Hull, 1949c) , H. wiedemanni ( Enderlein, 1938) , H. zenia ( Curran, 1941) .

Figures

FIGURES 71–77. 71: Baccha placiva Williston [male, GFGM-CZMA0002], habitus, dorsal view. Scale = 3 mm. 72: Mimocalla capitata (Loew) [male, USNMENT 00037907], habitus, dorsal view. 73: Hybobathus lineatus (Macquart) [male, USNM], habitus, dorsal view. 74: Mimocalla capitata [male, USNMENT 00037907], habitus, lateral view. 75: Baccha placiva [male holotype, AMNH, No. 19166], by the AMNH. 76: Mimocalla erebus (Hull) [male, CNC_Diptera209355], male genitalia, lateral view: c: cercus; e: epandrium; s: surstylus. 77: Baccha placiva [male, GFGM-MPEG0006], male genitalia, lateral view: c: cercus; e: epandrium; s: surstylus.

FIGURES 78–84. 78: Hybobathus norina (Curran) [female, CNC, JSS25237], head, dorsal view. 79: Ocyptamus sp., O. lepidus species group [male, INPA-DIP0000247], head, dorsal view. 80: Pelecinobaccha alia Miranda [female paratype, USNMENT 00036075], head dorsal view. Scale = 1 mm. 81: Hybobathus norina [female, CNC, JSS25237], thorax, dorsal view. 82: Hybobathus arx (Fluke), female, habitus, dorsal view, photo previously published in Miranda (2017). 83: Hermesomyia wulpiana (Lynch Arribálzaga) [male, USNM], habitus, dorsal view. 84: Ocyptamus titania (Hull) [female, CNC], abdomen, dorsal view.