Geron Meigen
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publication ID |
https://doi.org/ 10.5281/zenodo.156842 |
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DOI |
https://doi.org/10.5281/zenodo.6273494 |
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persistent identifier |
https://treatment.plazi.org/id/FB38C637-FFDC-FFD9-FE9A-2420DF24F912 |
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treatment provided by |
Plazi |
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scientific name |
Geron Meigen |
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Key to species of the subgenus Geron Meigen View in CoL View at ENA from the Nearctic Region
1. Wing hyaline ................................................................................................................. 2
. Wing slightly infumate.................................................................................................. 3
2. Crossvein rm at middle of cell dm; scape with black hairs; basicostal pile pale yellow ....................................................................................................... subauratus Painter View in CoL
. Crossvein rm beyond middle of cell dm; scape with brown hairs; basicostal pile white ............................................................................................................ johnsoni Painter View in CoL
3. Crossvein mcu straight or nearly so ( Fig. 27 View FIGURES 27 – 28 ) ............................................................. 4
. Crossvein mcu sinuous ( Fig. 28 View FIGURES 27 – 28 ) ............................................................................... 6
4. Front of female with white to silver scales medially; crossvein rm at middle of cell dm; oral margin with come cinereous color................................................................. 5
. Front of female with golden scales medially, silver scales restricted to eye margins; crossvein rm beyond middle of cell dm; oral margin pure white .................................. ................................................................................. stenos Hall & Evenhuis View in CoL , sp. nov.
5. Scutellum completely devoid of scales; oral margin grayish white; vaginal furca ( Fig. 20 View FIGURES 19 – 24 ) with lateral struts angled outward .............. prosopidis Hall & Evenhuis View in CoL , sp. nov.
. Scutellum with a few white scales at anterolateral corners; oral margin gray; vaginal furca ( Fig. 8 View FIGURES 7 – 12 ) with lateral struts angled inward apically ................................................. ............................................................................... elachys Hall & Evenhuis View in CoL , sp. nov.
6. Front of female with silver to white scales medially ................................................... 7
. Front of female with golden scales medially ............................................................. 13
7. Mid tibia of male yellow to orange; crossvein rm at or beyond middle of cell dm..... 8
. Mid tibia of male black to brown; crossvein rm beyond middle of cell dm ............ 10
8. Crossvein rm beyond middle of cell dm ..................................................................... 9
. Crossvein rm at middle of cell dm...................... painteri Hall & Evenhuis View in CoL , sp. nov.
9. Front of female with yellow medial spot above oral margin; fore tarsi of female with unmodified setae ............................................. nevadensis Hall & Evenhuis View in CoL , sp. nov.
. Front of female without yellow medial spot above oral margin; fore tarsi of female with specialized palynophilic setae spatulate apically (cf. Fig. 29 View FIGURE 29. a ) (best seen under high magnification) ...................................................................... holosericeus Walker View in CoL
10. Male scutellum with scales, some specimens with a few restricted to anterolateral corners .......................................................................... albipilosus Hall & Evenhuis View in CoL , sp. nov.
. Male scutellum devoid of scales ................................................................................ 11
11. Upper occiput and dorsum or thorax and abdomen with golden scales admixed with silver to white scales ....................................................................... albidipennis Loew View in CoL
. Upper occiput and dorsum of thorax and abdomen with white scales........................ 12
12. Vaginal furca with broad lateral struts with ends turned up ( Fig. 5 View FIGURES 1 – 6 ) .............................. .............................................................................. borealis Hall & Evenhuis View in CoL , sp. nov.
. Vaginal furca with lateral struts narrow, ends not turned upward ( Fig. 4 View FIGURES 1 – 6 )...................... ............................................................................................................. argutus Painter View in CoL
13. Mid tibia of male brown to black ............................................................................... 14
. Mid tibia of male orange to yellowish ........................................................................ 20
14. Crossvein rm at middle of cell dm............................................................................. 15
. Crossvein rm beyond middle of cell dm .................................................................... 16
15. Pile of occiput all white; vaginal furca with lateral struts clublike apically ( Fig. 9 View FIGURES 7 – 12 ) .... ........................................................................... eriogonae Hall & Evenhuis View in CoL , sp. nov.
. Pile of occiput yellowish above, white below; vaginal furca with lateral struts broad apically, curved inward ( Fig. 12 View FIGURES 7 – 12 ) ..................... infrequens Hall & Evenhuis View in CoL , sp. nov.
16. Male scutellum with scales ................................................................... niveus Cresson View in CoL
. Male scutellum devoid of scales ................................................................................. 17
17. Fore tarsi of female with spatulate palynophilic setae ( Fig. 29 View FIGURE 29. a ); oral margin pale col ored, yellowish to cinereous....................................................................................... 18
. Fore tarsi of female without palynophilic setae; oral margin darker than above, orange yellow in color................................................... monticola Hall & Evenhuis View in CoL , sp. nov.
18. Basicostal hairs and scales yellow to golden ............................................................. 19
. Basicostal hairs and scales silvery white.............. cressoni Hall & Evenhuis View in CoL , sp. nov.
19. Mid leg of male black; male katepisternum dense white pilose and tomentose, pleura cinereous pollinose; female meron silvery pilose and tomentose; vaginal furca with apex of lateral struts containing long, thin inward process ( Fig. 19 View FIGURES 19 – 24 ) .............................. ................................................................................ peucon Hall & Evenhuis View in CoL , sp. nov.
. Mid leg of male brown; male katepisternum sparse white pilose, pleura generally dull gray, not pollinose; female meron bare; vaginal furca with apex of lateral struts containing broad, rounded inward process ( Fig. 10 View FIGURES 7 – 12 ) ................... halli Evenhuis View in CoL , sp. nov.
20. Antennal scape with black hairs................................................................................. 21
. Antennal scape with white hairs (a few black hairs may be present apically)........... 23
21. Crossvein rm at middle of cell dm; male scutellum with yellow scales........................ .......................................................................................................... senilis (Fabricius) View in CoL
. Crossvein rm beyond middle of cell dm; male scutellum devoid of scales.............. 22
22. Basicostal hairs and scales whitish; female fore tarsi with spatulate palynophilic setae ( Fig. 29 View FIGURE 29. a ) usually restricted to apical tarsal segments; vaginal furca with lateral struts very broad, not twisted ( Fig. 21 View FIGURES 19 – 24 ) ..................................................... rufipes Macquart View in CoL
. Basicostal hairs and scales golden; female fore tarsi without palynophilic setae; vaginal furca with lateral struts thin, twisted ( Fig. 25 View FIGURES 25 – 26 ) ............................ vitripennis Loew View in CoL
23. Basicostal hairs and scales yellow; male scutellum with scattered yellow tomentum 24
. Basicostal hairs and scales white; male scutellum with or without tomentum .......... 25
24. Crossvein rm at middle of cell dm; oral margin pale yellow; vaginal furca with apex of lateral struts complex, consisting of three connected plates ( Fig. 16 View FIGURES 13 – 18 ) ....................... .................................................................................. notios Hall & Evenhuis View in CoL , sp. nov.
. Crossvein rm beyond middle of cell dm; oral margin brownish; vaginal furca with apex of lateral struts with one inwardly and one outwardly directed lobe ( Fig. 26 View FIGURES 25 – 26 )....... ............................................................................... weemsi Hall & Evenhuis View in CoL , sp. nov.
25. Crossvein rm at middle of cell dm................................................... parvidus Painter View in CoL
. Crossvein rm beyond middle of cell dm ................................................................... 26
26. Oral margin cinereous to whitish ........................................................ nigripes Painter View in CoL
. Oral margin orangeish to yellow orange .................................................................... 27
27. Vaginal furca with pointed protuberances on inner margin ( Fig. 3 View FIGURES 1 – 6 ); distal ends of lateral struts not recurved inward ........................................................... arenicola Painter View in CoL
. Vaginal furca without such protuberances on inner margin; distal ends of lateral struts recurved inward ( Fig. 6 View FIGURES 1 – 6 )...................................... confusus Hall & Evenhuis View in CoL , sp. nov.
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