Maiana Miranda, 2020
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publication ID |
https://doi.org/10.11646/zootaxa.4822.2.1 |
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publication LSID |
lsid:zoobank.org:pub:E3B5713F-ADE8-4075-9ABF-8F6DE9D3A88E |
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DOI |
https://doi.org/10.5281/zenodo.4449983 |
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persistent identifier |
https://treatment.plazi.org/id/653D9422-ABC8-48E6-BC3B-712EA966E548 |
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taxon LSID |
lsid:zoobank.org:act:653D9422-ABC8-48E6-BC3B-712EA966E548 |
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treatment provided by |
Plazi (2020-12-30 13:30:57, last updated 2024-11-27 02:17:39) |
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scientific name |
Maiana Miranda |
| status |
gen. nov. |
Genus Maiana Miranda View in CoL View at ENA gen. nov.
Figs 16–22 View FIGURES 12–22. 12–15 , 67–69 View FIGURES 61–67. 61 View FIGURES 68–77. 68 , 102 View FIGURES 89–102. 89
urn:lsid:zoobank.org:act:653D9422-ABC8-48E6-BC3B-712EA966E548
Type species: Baccha pumila Austen, 1893
Baccha lepidus species group, in part. Hull (1949a)
Ocyptamus callidus species group. Miranda et al. (2016); Mengual et al. (2018)
Description. Head. Face pale and narrow (between 1/4 and 1/3 of head width); tubercle weak and medially positioned. Antennal insertions confluent. Frons ~1/3 of head width. *Male ocellar triangle ~3 times its length from posterior eye margin ( Fig. 17 View FIGURES 12–22. 12–15 ). Female ocellar triangle ~1 ocellus-width from lateral eye margin. Dorsal occiput with 2 rows of pile. Thorax. Scutum with 3 golden microtrichose stripes, and without distinct anterior row of pile. Scutellum pale. Anterior anepisternum pilose. Katatergite with short microtrichia that gives the sclerite a ‘velvet’ appearance. Metaepisternum pilose. Metasternum bare. Upper calypter margin with pile shorter than pile on the ventral calypter margin. Metafemur with normal pile. Wing. Alula narrow (as wide as c cell). Wing hyaline. Abdomen. Abdomen slightly petiolate; terga with ‘L’-shaped pale markings ( Fig. 16 View FIGURES 12–22. 12–15 ); *tergum 1 trapezoidal and short ( Figs 19 View FIGURES 12–22. 12–15 and 67 View FIGURES 61–67. 61 ); 2nd abdominal segment slightly constricted; *male sternum 4 and, more so, 5 asymmetrical ( Fig. 68 View FIGURES 68–77. 68 ). Terminalia. Female tergum 7 as a pair of lateral rectangular sclerotized areas ( Fig. 102 View FIGURES 89–102. 89 ); tergum 8 boomerangshaped with weakly sclerotized sides ( Fig. 102 View FIGURES 89–102. 89 ). Male hypopygium very large; *subepandrial sclerite very large, with ventro-lateral, wide, lobular expansions directed apically ( Figs 20 and 21 View FIGURES 12–22. 12–15 ); *hypandrium pilose on apico-ventral lobes ( Fig. 22 View FIGURES 12–22. 12–15 ); *postgonite rudimentary ( Fig. 22 View FIGURES 12–22. 12–15 ); *phallus heavily sclerotized and cone-shaped ( Figs 22 View FIGURES 12–22. 12–15 and 69 View FIGURES 68–77. 68 ).
Included species (2): M. callida ( Hine, 1914) comb. nov. [1b, 3, 4], M. pumila ( Austen, 1893) comb. nov. [1b].
Etymology. The genus is named after the first author’s youngest daughter. The name is to be treated as feminine.
Comments. This genus, corresponding to the former Ocyptamus callidus species group, is superficially similar to Nuntianus gen. nov., from which it differs in having three golden microtrichose stripes on the scutum ( Fig. 16 View FIGURES 12–22. 12–15 ), slight constriction in the 2 nd abdominal segment ( Fig. 16 View FIGURES 12–22. 12–15 ), a pair of ‘L’-shaped pale markings on the abdominal terga ( Fig. 16 View FIGURES 12–22. 12–15 ) and enlarged male hypopygium ( Figs 20, 21, 22 View FIGURES 12–22. 12–15 ).
The wide expansions of the sub-epandrial sclerite in Maiana gen. nov. are similar to the F. rugosifrons species group. The anterior lobular projection of these expansions ( Fig. 20 View FIGURES 12–22. 12–15 ) resembles the lobate condition in Nuntianus gen. nov. (see below), although they are lateral instead of medial ( Figs 20, 21 View FIGURES 12–22. 12–15 ). Molecular data do not support an association of Maiana with either of these groups, but instead suggest a relationship to Styxia Hull, 1943a ( Miranda et al. 2016).
Austen, E. E. (1893) Descriptions of new species of dipterous insects of the family Syrphidae in the collection of the British Museum, with notes on species described by the late Francis Walker. Part I. Bacchini and Brachyopini. Proceedings of the Zoological Society of London, 1893, 132 - 164.
Hine, J. S. (1914) Diptera of Middle America. Family Syrphidae. The Ohio Naturalist, 14, 333 - 343.
Hull, F. M. (1943 a) The New World species of the genus Baccha. Entomologica Americana, 23, 42 - 99, 10 pls.
Hull, F. M. (1949 a) The genus Baccha from the New World. Entomologica Americana, 27, 89 - 285, 47 pls. [1947]
Mengual, X., Miranda, G. F. G. & Thompson, F. C. (2018) Unraveling Ocyptamus and the Baccha legacy (Diptera: Syrphidae): redefinition of groups and new species descriptions. Zootaxa, 4461 (1), 1 - 44. https: // doi. org / 10.11646 / zootaxa. 4461.1.1
Miranda, G. F. G., Skevington, J. H., Marshall, S. A. & Kelso, S. (2016) The genus Ocyptamus Macquart (Diptera: Syrphidae): A molecular phylogenetic analysis. Arthropod Systematics and Phylogeny, 74, 161 - 176.
FIGURES 12–22. 12–15. Hypocritanus Miranda gen. nov.. 12: Hypocritanus fascipennis (Wiedemann), female, habitus, dorsal view, by Steve Marshall. 13: Hypocritanus fascipennis (Wiedemann) (debu01088980), male, epandrium, ventral view. 14–15. Hypocritanus fascipennis (Wiedemann) (debu00119165), female, terminalia. 14: dorsal view. 15: lateral view. 16–22. Maiana Miranda gen. nov. 16: Maiana pumila (Austen), female, habitus, dorsal view, by Steve Marshall. 17: Maiana sp. (INPA- DIP000172), male, head, dorsal view. 18: Maiana pumila (Austen) (JSS32861), male, wing. 19: Maiana pumila (Austen) (debu00178088), female, scutellum and tergum 1, dorsal view. 20–22. Maiana pumila (Austen) (JSS32861), male, terminalia. 20: epandrium, lateral view. 21: epandrium, ventral view. 22: hypandrium, lateral view. c: cercus; e: epiproct; h: hypandrium; p: postgonite; ph: phallus; s: surstylus; se: subepandrial sclerite; l: lobe; le: lobular expansion; lem: lateral eye margin; o: ocellar triangle; pem: posterior eye margin; t1: tergum 1.
FIGURES 61–67. 61: Pseudoscaeva diversifasciata (Knab) (CNC_Diptera040088), female, katatergite, lateral. 62: Styxia eblis Hull (debu01088838), male, pleuron, lateral. 63: Hybobathus norina (Curran) (JSS25233), male, hypandrium, lateral. 64: Orphnabaccha aff. calda (CNC_Diptera210099), male, hypandrium, lateral. 65: Mimocalla erebus (Hull) (CNC_Diptera209355), male, epandrium, lateral, photo previously published in Mengual et al. (2018). 66: Fragosa argentina (Curran) (CNC_Diptera174232), female, tergum 1, dorsal. 67: Maiana callida (Hine) (CNC_Diptera105396), male, tergum 1, dorsal. c: cercus; ca: calypter; d: distiphallus; db: dorsal bridge; e: epandrium; h: hypandrium; k: katatergite; l: lobe; n: lateral notch; p: postgonite; ps: posterior spiracle; s: surstylus; t1: tergum 1.
FIGURES 68–77. 68: Maiana callida (Hine) (CNC_Diptera105396), male, abdomen, ventral. 69: Maiana pumila (Austen) (JSS32861), male, terminalia, oblique fronto-ventral. 70–73: Hybobathus pola (Curran). 70: female terminalia (CNC_Diptera 161361), apex, dorsal. 71–72: male terminalia (CNC_Diptera 161366). 71: hypandrium, ventral. 72: terminalia, lateral. 73: holotype Baccha pola Curran (AMNH), male, habitus, dorsal, by AMNH. 74: Fragosa aurora (Hull) (holotype Baccha aurora Hull, AMNH), male, habitus, dorsal, by AMNH. 75: Nuntianus variegatus (Macquart) (holotype Baccha variegata Macquart, MNHNP, ED8265), female, habitus, dorsal, by MNHNP. 76: Fragosa virgilio (Hull) (holotype Baccha virgilio Hull, CNC, CNC_Diptera189124), male, habitus, dorsal, by CNC. 77: Victoriana oblonga (Walker) (holotype Baccha oblonga Walker, BMNH, NHMUK 010369937), female, habitus, dorsal, copyright of The Trustees of the Natural History Museum, London. c: cercus; e: epiproct; h: hypandrium; l: lobe; n: lateral notch; p: postgonite; ph: phallus; s: surstylus; s4 and 5: sternum 4 and 5; t7: tergum 7.
FIGURES 89–102. 89: Victoriana sativa (Curran) (holotype Baccha sativa Curran, AMNH), habitus, dorsal, by AMNH. 90– 91: Victoriana laudabilis (Williston) (holotype Baccha laudabilis Williston, BMNH, NHMUK010369870), copyright of The Trustees of the Natural History Museum, London. 90: base of abdomen and metafemur, dorsal. 91: base of wing, dorsal (line drawing represents outline of the alula). 92–95: Fragosa sp. (species group tenuis, CNC_Diptera196012), male. 92: hypandrium, lateral. 93: surstylus, ventro-lateral. 94: epandrium, lateral. 95: epandrium, ventral (line drawing represents outline of the subepandrial sclerite). 96–97: Nuntianus abata (Curran) (CNC_Diptera209361), male, hypandrium. 96: lateral. 97: ventral. 98: Syrphus conjunctus Wiedemann (currently incertae sedis, CNC_Diptera209347), male, hypandrium, lateral. 99: Victoriana aff. melanorrhina (debu00279441), male, hypandrium, ventral. 100: Victoriana aff. melanorrhina (DEBU), female, terminalia, dorsal. 101: Victoriana parvicornis (Loew) (CNC_Diptera237922), terminalia, dorsal. 102: Maiana pumila (Austen) (debu00178088), female, terminalia, dorsal. a: alula; c: cercus; d: distiphallus; e: epiproct; l: lobe; p: baso-posterior pile; t7 and 8: tergum 7 and 8.
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