Eumerus tricolor (Fabricius, 1798)
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publication ID |
https://doi.org/ 10.5852/ejt.2020.722.1139 |
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publication LSID |
lsid:zoobank.org:pub:90B3B475-49D9-4869-8F5F-A788DB880356 |
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persistent identifier |
https://treatment.plazi.org/id/03855E28-D75F-FFDB-FF2C-C064FA82421F |
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treatment provided by |
Valdenar |
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scientific name |
Eumerus tricolor |
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Identification key to the males of the Eumerus tricolor View in CoL species group in Iran
Females are not included in the following key because they are either unknown for most of the species or morphologically difficult to separate from each other.
1. Basoflagellomere radially furrowed, apicolaterally with clearly demarcated, ellipsoidal fossa ( Fig. 11 View Fig A–I); katepisternum almost entirely pilose; wing vein costa with a row of long posterodorsal setae basally ( Fig. 8F View Fig ); terga often more or less red coloured; anterior surstylus lobe undeveloped ( Figs 18 View Fig A–F, 19A–E) .............................................................................................. tricolor View in CoL group 2
– Basoflagellomere without radial grooves, its fossa unclear; katepisternum with separate dorsal and ventral pile patch; wing vein costa with at most short posterodorsal pile basally; terga black coloured, in some species with yellow transparent maculae on tergum II laterally; anterior surstylus lobe more or less developed ............................................................................................ other Eumerus View in CoL groups
2. Eyes pilose (as in Fig. 15A View Fig ); scutum and scutellum shiny metallic, weakly pollinose (as in Fig. 3C View Fig ); legs predominantly black; metafemur slightly enlarged (as in Fig. 9A View Fig ) .......................................... 3
– Eyes bare ( Fig. 15 View Fig C–D); scutum and scutellum strongly pollinose, with very short yellowish pile and with 4 longitudinal blackish vittae ( Fig. 3F View Fig ); legs predominantly orange ( Fig. 6F View Fig ); metafemur strongly enlarged ....................................................................................... E. jacobsoni Becker, 1913 View in CoL
3. Metaleg extremely long and slender ( Fig. 7G View Fig ) ................................................................................. 4
– Metaleg not elongated, clearly enlarged (especially metafemur) ..................................................... 5
4. Eyes widely spaced ( Fig. 17E View Fig ); face white pilose; scutum brownish pilose, without pollinose vittae; wing infuscated ( Fig. 4G View Fig ); abdominal terga II–IV predominantly reddishorange .......................................................................................... E. tadzhikorum Stackelberg, 1949 View in CoL
– Eyes only about 1 ommatidium spaced ( Fig. 15G View Fig ); face black pilose, in some specimens entirely white pilose; scutum white pilose, with 2 narrow median pollinose vittae; wing hyaline ( Fig. 3H View Fig ); abdomen black ............................................................................................ E. longitarsis Peck, 1979 View in CoL
5. Wing extensively bare of microtrichia, also on apical half; protarsus with strong setae along posterior margin, especially basitarsomere with several setae along entire posterior margin; subscutellar pile fringe long and dense and with apices strongly bent medially; pleura above metacoxa pilose ................................................................................................. E. persarum Stackelberg, 1961 View in CoL
– Wing almost entirely covered with microtrichia, basal cells sometimes partly bare; protarsus without strong setae along posterior margin, or at most with one apical seta on each tarsomere; subscutellar pile fringe long or short, not dense, and with apices at most very slightly bent medially; pleura above metacoxa bare ................................................................................................................................... 6
6. Wing at least slightly infuscated; metatarsus with dense thick black pile fringe ............................. 7
– Wing hyaline; metatarsus without dense thick black pile fringe ...................................................... 8
7. Eyes 3–4 ommatidia spaced ( Fig. 17A View Fig ); scutum and pleurae with relatively long pile; metafemur with long ventral pile, about ¼–⅓ width of metafemur; dense dorsal thick pile fringe on metatibia almost absent ( Fig. 10B View Fig ); metatarsus with pile fringe on entire dorsal surface ( Fig. 10C View Fig ); wing slightly infuscated in apical half from anterior margin to anterior half of cell dm; male genitalia as in Figs 19C View Fig , 21C, 23C View Fig ............................................... E. pilosipedes Gilasian & van Steenis View in CoL sp. nov.
– Eyes about 1 ommatidium spaced ( Fig. 15E View Fig ); scutum and pleurae with short pile; metafemur with short ventral pile, about ⅛–1/7 width of metafemur; metatibia with dense dorsal thick pile fringe apically ( Fig. 10A View Fig ); metatarsus pile fringe confined to antero-dorsal margin of metatarsus; wing strongly infuscated reaching to posterior margin of wing; male genitalia as in Figs 19B View Fig , 21B, 23B View Fig ..................................................................................................... E. kazanovzkyae Paramonov, 1927 View in CoL
8. Eyes holoptic with long eye contiguity ............................................................................................ 9
– Eyes dichoptic, in some species coalescent in one point ................................................................ 10
9. Eye contiguity about 0.7 times as long as frontal triangle; face and frontal triangle white pilose ( Fig. 13H View Fig ); scutum with long yellowish pile ( Fig. 6D View Fig ); abdomen predominantly reddish-orange ( Fig. 3D View Fig ); male genitalia as in Figs 18C View Fig , 20C View Fig , 22C View Fig ........................................................................... ................................................................................... E. chekabicus Gilasian & van Steenis View in CoL sp. nov.
– Eye contiguity about 0.4 times as long as frontal triangle; face and frontal triangle black pilose ( Fig. 16 View Fig C–D); scutum with mix of white and black pile ( Fig. 7B View Fig ); abdomen brownish-black ( Fig. 4B View Fig ); male genitalia as in Figs 19A View Fig , 21A, 23A View Fig ......................................... E. hissaricus Stackelberg, 1949 View in CoL
10. Eyes widely spaced, distance between eyes more than width of ocellar triangle ( Fig. 13E View Fig ); scutum pilose, with two bare longitudinal areas posteromedially; scutellum, in lateral view, strongly arched basally, more than half as high as long ........................................................... E. falsus Becker, 1922 View in CoL
– Eyes less widely spaced, distance between eyes less than width of ocellar triangle; scutum entirely and evenly pilose; scutellum more flat, at most ¼ as high as long ..................................................11
11. Pile on scutum at least equal to combined length of two basal segments of arista ........................ 12
– Pile on scutum very short, shorter than combined length of two basal segments of arista ............ 16
12. Basoflagellomere black or brownish-black .................................................................................... 13
– Basoflagellomere orange ................................................................................................................ 14
13. Eyes 6–7 ommatidia spaced ( Fig. 17G View Fig ); tergum III entirely and tergum II mostly orange; male genitalia as in Figs 19D View Fig , 21D, 23D View Fig ; body length: 6 mm .................................................................... ...................................................................................... E. vallicolus Gilasian & van Steenis View in CoL sp. nov.
– Eyes coalescent in one point ( Fig. 13A View Fig ); terga almost entirely reddish-brown ( Fig. 3A View Fig ); male genitalia as in Figs 18A View Fig , 20A View Fig , 22A View Fig ; body length: 9.7 mm ....... E. atricolorus Gilasian & van Steenis View in CoL sp. nov.
14. Eyes distinctly dichoptic; scutum and scutellum with dense pile; legs long pilose; abdomen mostly orange ............................................................................................................................................. 15
– Eyes coalescent in one point ( Fig. 17C View Fig ); scutum and scutellum with less dense pile; legs short pilose; abdomen brownish-black; male genitalia as in Figs 18F View Fig , 20F View Fig , 22F View Fig ...... E. richteri Stackelberg, 1960 View in CoL
15. Basoflagellomere egg-shaped ( Fig. 11G View Fig ); eyes 8–9 ommatidia spaced ( Fig. 16E View Fig ); ocellar triangle isosceles; vein R 4+5 slightly sinuate; legs predominantly black except for orange apex of femora and orange basal third of tibiae; abdominal tergum III almost entirely orange; male genitalia as in Figs 18E View Fig , 20E View Fig , 22E View Fig .................................................... E. ovoformus Gilasian & van Steenis View in CoL sp. nov.
– Basoflagellomere not egg-shaped; eyes about 4 ommatidia spaced ( Fig. 15A View Fig ); ocellar triangle equilateral; vein R 4+5 deeply sinuate; tarsi and basal half of tibiae orange; abdominal tergum III with distinct median black vitta; male genitalia as in Figs 18D View Fig , 20D View Fig , 22D View Fig .... E. coeruleus ( Becker, 1913) View in CoL
16. Basoflagellomere orange ( Fig. 11B View Fig ); frontal triangle with dense pile; tibiae orange in basal third; abdomen black ( Fig. 3B View Fig ); male genitalia as in Figs 18B View Fig , 20B View Fig , 22B View Fig .................................................. .................................................................................. E. brevipilosus Gilasian & van Steenis View in CoL sp. nov.
– Basoflagellomere black; frontal triangle with less dense pile ( Fig. 13I View Fig ); tibiae predominantly black except for narrow basal orange margin; abdomen predominantly orange; male genitalia as in Grković et al. (2017: 188, fig. 11d) ...................................................................... E. tricolor ( Fabricius, 1798) View in CoL
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