Tritoxa, Loew, 1873
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publication ID |
https://doi.org/ 10.11646/zootaxa.4920.3.3 |
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publication LSID |
lsid:zoobank.org:pub:20794FBC-E83E-419F-945D-4F94C6F9A47C |
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DOI |
https://doi.org/10.5281/zenodo.4530725 |
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persistent identifier |
https://treatment.plazi.org/id/03AF8782-FFD6-FF8B-FF13-FE68468EFA3C |
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treatment provided by |
Plazi |
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scientific name |
Tritoxa |
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Key to the species of Tritoxa View in CoL View at ENA
(modified from Steyskal (1967))
1 Thorax and abdomen dark brown to black ( Fig. 1 View FIGURES 1–2 ), wings with dark brown to black background ( Fig. 9 View FIGURES 6–13 ); crossvein dm-m sinuate................................................................................. T. flexa (Wiedemann)
- Thorax and abdomen reddish-brown to brown ( Fig. 2 View FIGURES 1–2 ), wings with brown background ( Figs 6–8, 10–13 View FIGURES 6–13 ); crossvein dm-m straight to slightly sinuate or angulate..................................................................... 2
2 Crossvein dm-m straight or slightly sinuate ( Figs 6–8, 10, 13 View FIGURES 6–13 ); silvery parafrontal microtrichose stripe very narrow, only immediately adjacent to eye ( Fig. 3 View FIGURES 3–5 )........................................................................ 3
- Crossvein dm-m angulate, or slightly angulate ( Figs 11, 12 View FIGURES 6–13 ); silvery parafrontal microtrichose stripe broad, surrounding bases of orbital setae ( Figs 4, 5 View FIGURES 3–5 )............................................................................... 7
3 Discal and subapical hyaline crossbands arcuate and parallel ( Fig. 10 View FIGURES 6–13 ); subapical hyaline crossband attaining costa basad of crossvein r-m............................................................................ T. incurva Loew View in CoL
- Discal and subapical hyaline crossbands arcuate or straight ( Figs 6–8, 13 View FIGURES 6–13 ); subapical hyaline crossband essentially straight, attaining costa apicad of crossvein r-m.................................................................... 4
4 Discal hyaline crossband reaching posterior wing margin, or at least extending beyond cell dm ( Fig. 13 View FIGURES 6–13 ); small hyaline spot in costal cell distal to humeral crossvein; silvery parafrontal microtrichia stripe distinct, extending nearly half distance from eye margin to orbital setae......................................................................... Tritoxa View in CoL sp.
- Discal hyaline crossband not extending beyond cell dm ( Figs 6–8 View FIGURES 6–13 ); costal cell distal to humeral crossvein dark, without hyaline spot; silvery parafrontal microtrichia stripe narrow, extending less than one-third distance from eye margin to orbital setae.. 5
5 Discal hyaline crossband ending in or very close to posterior distal corner of cell dm, generally tapered ( Fig. 8 View FIGURES 6–13 ); inner surstylus with row of 5–8 strong prensisetae; outer surstylus arched mesally ( Fig. 17 View FIGURES 14–17 )........................ T. decipiens View in CoL sp. nov.
- Discal hyaline crossband ending distant to posterior distal corner of cell dm and usually wide posteriorly ( Figs 6, 7 View FIGURES 6–13 ); inner surstylus with prensisetae widely separated or in tight cluster; outer surstylus straight or arched ( Figs 14, 16 View FIGURES 14–17 )............ 6
6 Inner surstylus with 3–4 strong, separated prensisetae; outer surstylus straight ( Fig. 16 View FIGURES 14–17 ); phallus very long, comprising some 4–5 loops; discal hyaline crossband long, extending to opposite crossvein r-m ( Fig. 7 View FIGURES 6–13 ).................. T. cuneata Loew View in CoL
- Inner surstylus with straight row of 4–5 thick prensisetae in tight cluster, decreasing in size with largest adjacent to outer surstylus ( Fig. 14 View FIGURES 14–17 ); outer surstylus arched ( Fig. 14 View FIGURES 14–17 ); phallus much shorter than typical of genus, comprising 2 loops ( Fig. 15 View FIGURES 14–17 ); discal hyaline crossband shorter, not reaching opposite r-m crossvein ( Fig. 6 View FIGURES 6–13 ).......................... T. californica View in CoL sp. nov.
7 Crossvein dm-m with stump vein ( Fig. 12 View FIGURES 6–13 ); silvery parafrontal microtrichia stripe extending 1/4 to 1/3 distance from eye margin to midfrons ( Fig. 5 View FIGURES 3–5 ); discal hyaline crossband continuous from R 1 to posterior wing margin ( Fig. 12 View FIGURES 6–13 ); anepisternum shiny............................................................................................. T. ra Harriot
- Crossvein dm-m usually without stump vein ( Fig. 11 View FIGURES 6–13 ); silvery parafrontal microtrichia stripe extending halfway from eye margin to midfrons ( Fig. 4 View FIGURES 3–5 ); discal hyaline crossband disjunct along R 2+3 ( Fig. 11 View FIGURES 6–13 ); anepisternum densely clothed in yellow microtrichia............................................................................. T. pollinosa Cole View in CoL
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.