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Brigette Zacharczenko, David L. Wagner, Mary Jane Hatfield
Zookeys
Figures 1–12.Adults of Sympistis forbesi and Sympistis chionanthi. 1 ♂ Sympistis forbesi HOLOTYPE, IA: Boone Co., Little Blue Stem Prairie, ex larva on Triosteum (UCMS) 2 ♂ Sympistis forbesi, IL: Champaign Co., Mahomet, ex larva on Triosteum (CUIC) 3 ♂ Sympistis chionanthi, NY: Tompkins Co., Ithaca, ex ova, reared on Fraxinus (CUIC) 4 ♂ Sympistis forbesi, IA: Boone Co., Little Blue Stem Prairie, ex larva on Triosteum (UCMS) 5 ♂ Sympistis forbesi, IL: Champaign Co., Mahomet, ex larva on Triosteum (CUIC) 6 ♂ Sympistis chionanthi, CT: Windham Co., Hampton, adult at light (UCMS) 7 ♀ Sympistis forbesi, IA: Boone Co., Little Blue Stem Prairie, ex larva on Triosteum (UCMS) 8 ♀ Sympistis forbesi, IL: Champaign Co., Mahomet, ex larva on Triosteum (CUIC) 9 ♀ Sympistis chionanthi, NY: Tompkins Co., Ithaca, ex ova, reared on Fraxinus (CUIC) 10 ♀ Sympistis forbesi, IA: Polk Co., ex larva on Triosteum (UCMS) 11 ♀ Sympistis forbesi, IL: Champaign Co., Mahomet, ex larva on Triosteum (CUIC) 12 ♀ Sympistis chionanthi, CT: Windham Co., Pomfret, adult at light (UCMS).
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Brigette Zacharczenko, David L. Wagner, Mary Jane Hatfield
Zookeys
Figures 13–18.Sympistis forbesi and Sympistis chionanthi genitalia 13 Sympistis forbesi HOLOTYPE male, IOWA: Boone Co., Little Blue Stem Prairie, Genitalia CNC slide # 16516 ♂; scale = 1 mm 14 aedoeagus, same data 15 Sympistis chionanthi male, MANITOBA, Cartwright, Genitalia CNC slide # 16515 ♂ 16 aedoeagus, same data 17 Sympistis chionanthi female, SASKATCHEWAN, 8 mi NW Stewart, 1800’, Genitalia CNC slide # 13192 ♀; scale = 1 mm 18 Sympistis forbesi paratype female, same data as male, Genitalia CNC slide # 16517 ♀.
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Brigette Zacharczenko, David L. Wagner, Mary Jane Hatfield
Zookeys
Figures 19–23.Sympistis forbesi larva. 19 chaetotaxy 20 head, lateral 21 head, frontal 22 labrum 23 mandible.
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Brigette Zacharczenko, David L. Wagner, Mary Jane Hatfield
Zookeys
Figures 24–27.Sympistis forbesi middle instar. 24 head, lateral, with adenosma extruded; scale = 250 µm 25 labrum, mandibles, and oral cavity; scale = 100 µm 26 hypophryngeal complex (center left) and maxilla (center right); scale = 100 µm 27 prothoracic leg (note apical and subapical blade-like setae proximal to claws); scale = 100 µm.
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Brigette Zacharczenko, David L. Wagner, Mary Jane Hatfield
Zookeys
Figures 28–29.Sympistis forbesi pupa 28 ventral 29 lateral.
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Brigette Zacharczenko, David L. Wagner, Mary Jane Hatfield
Zookeys
Figures 30–33.Sympistis forbesi and Sympistis chionanthi larvae. 30 Sympistis forbesi second (upper) and third (lower) instars. IA: Boone Co., Little Blue Stem Prairie, May 2011, ex Triosteum perfoliatum 31 Sympistis forbesi middle instar, same collection data 32 Sympistis forbesi mature last instar, same collection data 33 Sympistis chionanthi mature last instar, NY: Albany Co., Albany, female fall 1995, ex ova reared on Fraxinus americana, DLW Lot: 1996F32.
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Brigette Zacharczenko, David L. Wagner, Mary Jane Hatfield
Zookeys
Figures 34–36.Sympistis forbesi IA: Boone Co., Little Blue Stem Prairie, May 2011 on Triosteum perfoliatum 34 three larvae secreted in a leaf axil; note frass accumulation 35 larvae on new spring leaves; note two larvae on new leaf bundle and one on foreground leaf 36 last instar on a flower of Triosteum perfoliatum, matching the color of the flower and petioles.
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