Mimocalla Hull, 1943

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 : 9-10

Genus Mimocalla Hull, 1943 stat. rev.

Figs 1 , 72, 74, 76 .

Mimocalla Hull, 1943b: 46 , as a subgenus of Baccha . Type species: Baccha capitata Loew, 1863 (original designation). Ocyptamus capitatus species group. Thompson (1981).

Ocyptamus (Mimocalla) . Thompson & Zumbado (2000), Mengual et al. (2012).

Diagnosis. Sinuate vein R4+5 and sigmoid vein M1. Strongly petiolate abdomen. Enlarged male genitalia including a modified 4th sternum. Frons usually prominent and antenna short. Metacoxa and metatrochanter with thick and dense pile.

Biology. Immatures of the genus Mimocalla feed on scale insects ( Hemiptera : Coccidae and Diaspididae ) and whiteflies ( Hemiptera : Aleyrodidae ) (Thompson & Zumbado 2000; Rojo et al. 2003).

Comments. One of the largest syrphine flies, this genus can be recognized by the distinct sinuous R4+5 and M1 veins plus the dense pile on the metacoxa and metatrochanter.

Species list (7): M. bonariensis ( Bréthes, 1905) , M. capitata ( Loew, 1863) , M. erebus ( Hull, 1943e) , M. gigantea ( Schiner, 1868) , M. nymphaea ( Hull, 1943f) , M. tristani (Zumbado in Thompson & Zumbado, 2000) , M. willistoni (Thompson in Thompson et al., 1976) .

Figures

FIGURES 1–10. 1: Mimocalla erebus (Hull) [female, CNC_Diptera209354], metafemur, lateral view. 2: Salpingogaster sp. [male, INPA-DIP0000125], metafemur, lateral view. Note: Arrow indicates ventral spinose setae. 3: Salpingogaster nigra Schiner [male, ZFMK-DIP-00020899], postmetacoxal bridge with tergum 1 and sternum 1, posterior view. Note: Arrow indicates tergum 1. Red lines indicate the complete postmetacoxal bridge (=metepimera continuous behind coxae). 4: Eosalpingogaster umbra Mengual & Thompson [female, USNMENT 00036793], postmetacoxal bridge with tergum 1 and sternum 1, posterior view. Note: Arrow indicates tergum 1. Red lines indicate the complete postmetacoxal bridge (=metathoracic epimera continuous behind metacoxae); less sclerotized medial line visible. 5: Salpingogaster nigra [male, DEBU01088906], wing. 6: Eosalpingogaster cochenillivora (Guérin-Méneville) [male, MPEGDIP12170472], wing. 7: Pelecinobaccha alia Miranda [male, USNMENT 01288155], occiput and pleuron, lateral view. Note: Arrow indicates pile on anterior anepisternum. 8: Orphnabaccha cf. ampla Fluke [male, CNC_Diptera210129], pleuron, lateral view. Note: Arrow indicates pile on anterior anepisternum. 9: Salpingogaster nigra [male, ZFMK-DIP-00020899], scutellum and tergum 1, dorsal view. 10: Eosalpingogaster umbra [female, USNMENT 00036793], scutellum and tergum 1, dorsal view.

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.