Syneches Walker
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publication ID |
https://doi.org/ 10.11646/zootaxa.4103.5.1 |
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publication LSID |
lsid:zoobank.org:pub:4511286D-451E-4C2B-9CE3-5D7621E7DEDF |
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DOI |
https://doi.org/10.5281/zenodo.6088566 |
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persistent identifier |
https://treatment.plazi.org/id/03CD87D9-9E2B-3A2C-6DCB-2998FA745386 |
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treatment provided by |
Plazi |
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scientific name |
Syneches Walker |
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Key to Amazonian species of Syneches Walker View in CoL
1 Prosternum wide ( Fig. 1 View FIGURES 1 – 2 ).............................................................................. 2
- Prosternum narrow ( Fig. 2 View FIGURES 1 – 2 )............................................................................ 5
2 Femora slender; postpedicel long, 3.5 times longer than length of scape and pedicel combined; scutum with a quadrangular dark brown dorsal stain on anterior 1/3..................................... S. longiflagellatus Ale-Rocha & Vieira View in CoL
- All femora swollen; postpedicel short, equal to or slightly longer than length of scape and pedicel combined; scutum without stain on anterior 1/3................................................................................... 3
3 Hind femur as dilated as mid femur; hind femur yellow with apex brown; prescutellar disc with mixed golden and gray pruinescence..................................................................... S. rafaeli Ale-Rocha & Vieira View in CoL
- Hind femur distinctly more dilated than mid femur; hind femur brown with apex yellow, or with a preapical yellow ring; prescutellar disc with pale golden or gray pruinescence......................................................... 4
4 Pterostigma subquadrangular ( Fig. 115 View FIGURES 103 – 117 ); mid femur with AV row of long and stout setae along the entire length.................................................................................................. S. walkeri Smith View in CoL
- Pterostigma elongate, sometimes fading distally, becoming glassy at apex of cell r1 ( Fig. 107 View FIGURES 103 – 117 ); mid femur with AV row of long and stout setae at basal half........................................................... S. curvipes (Fabricius) View in CoL
5 Ocellar triangle flat, not protuberant..................................................................... 6
- Ocellar triangle distinctly protuberant.................................................................... 8
6 Fore and mid femora brown, with yellow apex; hind tibia yellow with brown medial ring; pterostigma small and subrounded, located at end of vein R1 ( Fig. 105 View FIGURES 103 – 117 )...................................................... S. applanatus View in CoL sp. nov.
- Fore and mid femora yellow; hind tibia yellow with apical 1/2 to 2/3 brown; pterostigma oval or quadrangular, filling up the apex of cell r1 ( Fig. 111 View FIGURES 103 – 117 )............................................................................... 7
7 Vein R2+3 with apex abruptly bent around pterostigma, joining the Costa at a right angle; pterostigma subquadrangular ( Fig. 111 View FIGURES 103 – 117 ); hind femur dark brown............................................................... S. manaos Smith View in CoL
- Vein R2+3 with apex slightly curved upward, in acute angle with Costa; pterostigma oval ( Rafael & Ale-Rocha 1995, fig. 64); hind femur brown with basal 1⁄3 to 1/2 yellow................................................. S. repletus Bezzi View in CoL
8 Scutum low, flattened, about half of the height of mesopleuron; pterostigma elongate, starting at apex of vein R1, not filling the apex of cell r1 (ex. Fig. 103 View FIGURES 103 – 117 )............................................................................ 9
- Scutum high, rounded or pyramidal, equal or higher than height of mesopleuron; pterostigma not as above, if elongate then the scutum is high, globose and the wing is brown............................................................ 12
9 Midleg yellow except tarsomeres 3–5 brown............................................................. 10
- Midleg brown......................................................................... S. fuscescens Bezzi View in CoL
10 Scutum brown; wing brown tinged, slightly paler on posterior margin and darker on costal region up to the apex ( Fig. 108 View FIGURES 103 – 117 ) 11
- Scutum yellow with bow-shaped dark brown band anteriorly; wing with large brown infuscation on distal third extending to upper half of cell m1 ( Rafael & Ale-Rocha 1995, fig. 62)........................................ S. dichrous Bezzi View in CoL
11 Hind leg pale brown except femur brown medially, tibia and tarsomeres 3–5 dark brown; pterostigma narrow, small, not filling the apex of cell r1 ( Fig. 103 View FIGURES 103 – 117 ); hypandrium with apical 1/3 tapered, cleft apically; phallus slender with narrow apex; postgonite slender, longer than phallus, apex hook-shaped ( Fig. 4 View FIGURES 3 – 9 )..................................... S. amazonicus View in CoL sp. nov.
- Hind leg brown, except coxa, trochanter and basal 1/3 of femur yellow; pterostigma large, filling 2/3 of the apex of r1 ( Fig. 108 View FIGURES 103 – 117 ); hypandrium slightly narrowed towards base, distal margin triangular; phallus robust, tapered distally, with rounded apex and sclerotized lateral protuberance; postgonite slender and shorter than phallus ( Fig. 41 View FIGURES 40 – 46 ).......... S. equatoriensis View in CoL sp. nov.
12 Scutum pyramidal, higher than mesopleuron and pleura brown, if rounded and same height as mesopleuron then pleura totally yellow; small species, most do not exceed 3.5 mm ......................................................... 13
- Scutum rounded, same height as mesopleuron; medium to large species, over 3.8 mm ............................. 20
13 Scutum pyramidal with reddish brown or gray pruinescence on prescutellar disc; pterostigma hyaline or brown tinged; antenna with scape and pedicel brown......................................................................... 14
- Scutum rounded with prescutellar disc covered with dense, silvery pruinescence; wing with inconspicuous pterostigma ( Fig. 112 View FIGURES 103 – 117 ); antenna with scape and pedicel yellow................................................. S. moraballi Smith View in CoL
14 Tibiae yellow; scutum with reddish brown pruinescence..................................... S. pyramidatus Bezzi View in CoL
- Tibiae brown to dark brown, with base and apex yellow; scutum with gray pruinescence on prescutellar disc........... 15
15 Wing with pterostigma divided into two stains or pale spots, one at end of R1 and other in the extremity of R2+3 (ex. Figs 104, 112 View FIGURES 103 – 117 ).............................................................................................. 16
- Wing with pterostigma in the end of R1 or inconspicuous ( Fig. 106 View FIGURES 103 – 117 )........................................... 18
16 Vein R2+3 with apex abruptly bent to the Costa ( Fig. 104 View FIGURES 103 – 117 ); antenna dark brown..................... S. angulatus View in CoL sp. nov.
- Vein R2+3 with apex gradually curved upwards ( Fig. 112 View FIGURES 103 – 117 ); antenna brown, except apex of postpedicel yellow........... 17
17 Palpus brown; hind femur slightly more dilated than mid and fore femora; hypandrium rounded apically, with a pair of apical median setae inserted next to each other ( Ale-Rocha & Vieira 2008, fig. 30)................ S. vidali Ale-Rocha & Vieira View in CoL
- Palpus yellow; hind femur more slender than mid and fore femora; hypandrium with apex slightly concave between the pair of long and widely separated setae ( Fig. 60 View FIGURES 59 – 65 )................................................. S. maculosum View in CoL sp. nov.
18 Cell R1 narrow, particularly apically; pterostigma slightly opaque ( Rafael & Ale-Rocha 1995, fig. 65); epandrial lamella with sharpened apex......................................................................... S. obeliscus Bezzi View in CoL
- Cell R1 widened, particularly apically (ex. Fig. 106 View FIGURES 103 – 117 ); pterostigma hyaline or brown fading distally; epandrial lamella with a small preapical dorsal protuberance ( Fig. 28 View FIGURES 26 – 32 )............................................................. 19
19 Pterostigma small, triangular ( Rafael & Ale-Rocha 1995, fig. 66); postpedicel rounded, 2/3 of combined length of scape and pedicel; distal margin of hypandrium flat.................................................... S. annulipes Bezzi View in CoL
- Pterostigma hyaline ( Fig. 106 View FIGURES 103 – 117 ); postpedicel oval, equal to combined length of scape and pedicel; distal margin of hypandrium with shallow median concavity forming two rounded lateral lobes ( Fig. 27 View FIGURES 26 – 32 )....................... S. bilobatus View in CoL sp. nov.
20 Pterostigma large, rectangular, at end of R1 and one dark spot at apex of R2+3 ( Fig. 115 View FIGURES 103 – 117 ; Rafael & Ale-Rocha 1995, fig. 63)..................................................................................................... 21
- Pterostigma elongated ( Figs 109, 116 View FIGURES 103 – 117 )................................................................... 22
21 Antenna yellow; legs yellow except hind leg with distal half of femur brown, tibia and tarsomeres brown; hind tarsomere 1 slender............................................................................ S. stigmaticalis Bezzi View in CoL
- Antenna with scape and pedicel dark brown and pale yellow postpedicel; legs yellow with brown rings on femora and tibiae; hind tarsomere 1 slightly dilated.......................................................... S. striatus View in CoL sp. nov.
22 Femora slender; sub-hyaline with brown pterostigma ( Fig. 109 View FIGURES 103 – 117 ; Ale-Rocha & Vieira 2008, fig. 37).................. 23
- Fore femur enlarged; wing brown with dark brown pterostigma ( Fig. 114 View FIGURES 103 – 117 )....................... S. tenebricus View in CoL sp. nov.
23 Hind tibia swollen apically; hind tarsomere 1 dilated; hypandrium trapezoidal distally ( Ale-Rocha & Vieira 2008, fig. 9)................................................................................ S. jauensi Ale-Rocha & Vieira
- Hind tibia slender; hind tarsomere 1 slender; hypandrium rounded distally, with slightly narrowed apex ( Fig. 48 View FIGURES 47 – 53 ).................................................................................................. S. exilis View in CoL sp. nov.
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