Zygaena transalpina (Esper, 1780)


Zygaena transalpina: Adult (Kanisfluh, Bregenzer Wald, Austria, late July 2010, 1800m above sea level) [N] Zygaena transalpina: Adult (Kanisfluh, Bregenzer Wald, 1800m above sea level, August 2010) [N] Zygaena transalpina: Adult (Kanisfluh, Bregenzer Wald, 1800m above sea level, August 2010) [N] Zygaena transalpina: Adult (Kanisfluh, Bregenzer Wald, late July 2010, 1800m above sea level) [N] Zygaena transalpina: Adult (Kanisfluh): white tips of antennae [N] Zygaena transalpina: Adult (Lech valley in Tyrol, Forchach, Austria) [N] Zygaena transalpina: Adult (S-Germany, Allgaeu Alps, Hinterstein, Nicken-Alpe, 1600m asl, August 2013). The individuals of this intermediate population are quite variable. This specimen looks like ssp. hippocrepidis. [N] Zygaena transalpina: Male (e.o. Switzerland, Grisons, Oberalppass, oviposition in July 2022) [S] Zygaena transalpina: Male (e.o. Switzerland, Grisons, Oberalppass, oviposition in July 2022) [S] Zygaena transalpina: Female (e.o. Switzerland, Grisons, Oberalppass, oviposition in July 2022) [S] Zygaena transalpina: Female (e.o. Switzerland, Grisons, Oberalppass, oviposition in July 2022) [S] Zygaena transalpina: Female (e.o. Switzerland, Grisons, Oberalppass, oviposition in July 2022) [S] Zygaena transalpina: Female (e.o. Switzerland, Grisons, Oberalppass, oviposition in July 2022) [S] Zygaena transalpina: Adult (S-Germany, Memmingen, June 2017) [S] Zygaena transalpina: Adult (S-Germany, Memmingen, June 2017) [S] Zygaena transalpina: Copulation (Italy, Abruzzi, L'Aquila, Campo Felice, late September 2016) [N] Zygaena transalpina: Adult (Italy, Rieti, Monte Terminillo, late September 2023) [N] Zygaena transalpina: Adult (Italy, Abruzzi, L'Aquila, Campo Felice, late September 2016) [N] Zygaena transalpina: Adult (S-Germany, NW-Bavaria, Würzburg, 03. July 2023) [N] Zygaena transalpina: Adult (S-Germany, NW-Bavaria, Würzburg, 03. July 2023) [N] Zygaena transalpina: Adult (e.o., S-Germany, eastern Swabian Alb, Heidenheim, oviposition in July 2022) Zygaena transalpina: Adult (e.o., S-Germany, eastern Swabian Alb, Heidenheim, oviposition in July 2022) [S] Zygaena transalpina: Adult (eastern Swabian Alb, Southern Germany, August 2010) [N] Zygaena transalpina: Adult (eastern Swabian Alb, Southern Germany, August 2010) [N] Zygaena transalpina: Adult (eastern Swabian Alb, Southern Germany, August 2010) [N] Zygaena transalpina: Adult (eastern Swabian Alb, Southern Germany, August 2010) [N] Zygaena transalpina: Adult (eastern Swabian Alb, Southern Germany, August 2010) [N] Zygaena transalpina: Adult (eastern Swabian Alb, Southern Germany, August 2010) [N] Zygaena transalpina: Worn adult (eastern Swabian Alb, Southern Germany, August 2010) [N] Zygaena transalpina: Adult (S-Germany, eastern Swabian Alb, August 2010) [N] Zygaena transalpina: Adult (S-Germany, eastern Swabian Alb, August 2010) [N] Zygaena transalpina: Mating (eastern Swabian Alb, southern Germany) [N] Zygaena transalpina: Female (France, Ardèche, Ruoms, June 2023) [S] Zygaena transalpina: Female (France, Ardèche, Ruoms, June 2023) [S] Zygaena transalpina: Adult (e.o., France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Adult (e.o., France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Adult (e.o., France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Adult (e.o., France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Adult (e.o., France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Adult (e.o., France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Female (N-Spain, Pyrenees, Huesca, Vanlo, 13. September 2021) [N] Zygaena transalpina: Female (N-Spain, Pyrenees, Huesca, Vanlo, 13. September 2021) [N] Zygaena transalpina: Female (N-Spain, Pyrenees, Huesca, Vanlo, 13. September 2021) [N] Zygaena transalpina: Female together with Z. fausta (N-Spain, Pyrenees, Huesca, Vanlo, 13. September 2021) [N] Zygaena transalpina: Female (N-Spain, Pyrenees, Huesca, Vanlo, 13. September 2021) [N] Zygaena transalpina: Adult (French eastern Pyrenees, Canigou, mid-October 2013) [N] Zygaena transalpina: Eggs (S-France, Ardèche, Ruoms, June 2023) [S] Zygaena transalpina: Eggs (S-France, Ardèche, Ruoms, June 2023) [S] Zygaena transalpina: Eggs (Switzerland, Grisons, Oberalppass, 1600m, 16. July 2022) [S] Zygaena transalpina: Eggs (Switzerland, Grisons, Oberalppass, 1600m, 16. July 2022) [S] Zygaena transalpina: Eggs (Switzerland, Grisons, Oberalppass, 1600m, 16. July 2022) [S] Zygaena transalpina: Eggs (Switzerland, Grisons, Oberalppass, 1600m, 16. July 2022) [S] Zygaena transalpina: Eggs (S-Germany, eastern Swabian Alb, 13. July 2022) [S] Zygaena transalpina: Eggs prior to hatching (S-Germany, eastern Swabian Alb, 20. July 2022) [S] Zygaena transalpina: Larva L1 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L1 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L1 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L1 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L1 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L1 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L1 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L1 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L2 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L2 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L2 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L2 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L2 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva earlier in diapause skin than others, presumably L3D (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L3 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L3 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva earlier in diapause skin than others, presumably L3D (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L3 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L3 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L3 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L3 (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva L3 prior to moult into diapause (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first hibernation in diapause skin (e.o. S-Germany, Heidenheim/Brenz, 2023)  [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the penultimate instar (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva in the penultimate instar (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva (e.o., S-Germany, eastern Swabian Alb, oviposition on 13. July 2022) [S] Zygaena transalpina: Larva, they often rest on stems high above the ground (S-Germany, eastern Swabian Alb, 11. July 2022) [N] Zygaena transalpina: Half-grown larva (eastern Swabian Alb, Southern Germany, July 2010) [N] Zygaena transalpina: Hippocrepidoid larva (eastern Swabian Alb, Southern Germany) [M] Zygaena transalpina: Hippocrepidoid larva (eastern Swabian Alb, Southern Germany) [M] Zygaena transalpina: Larva (eastern Swabian Alb, Southern Germany, July 2010) [N] Zygaena transalpina: Larva (eastern Swabian Alb, Southern Germany, July 2010) [N] Zygaena transalpina: Larva (eastern Swabian Alb, southern Germany, July 2010) [N] Zygaena transalpina: Larva L1 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L1 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L1 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L1 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L1 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L1 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L1 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L1 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L2 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L2 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L2 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L3 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L3 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L3 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L3 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L3 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva L3 (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the diapause skin in first hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the diapause skin in first hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the diapause skin in first hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the first post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the second post-diapause instar after hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the diapause skin in a second hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the diapause skin in a second hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva in the diapause skin in a second hibernation (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Larva (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Half-grown larva (Kanisfluh, Vorarlberg, Austria, May 2010) [M] Zygaena transalpina: Half-grown larva (Kanisfluh, Bregenzer Wald) [S] Zygaena transalpina: Larva (Kanisfluh, Bregenzer Wald) [S] Zygaena transalpina: Larva with weak but clearly visible dorsal line (transalpinoid character, Allgaeu Alps, Hinterstein, Nicken-Alpe, July 2013) [N] Zygaena transalpina: Larva with hippocrepidis characters (undistinguishable from larvae from the Swabian Alb). Allgaeu Alps, Hinterstein, Nicken-Alpe, July 2013) [N] Zygaena transalpina: Larva with hippocrepidis characters (undistinguishable from larvae from the Swabian Alb). Allgaeu Alps, Hinterstein, Nicken-Alpe, July 2013) [N] Zygaena transalpina: Larva (SE-France, north of Sisteron, July 2010) [M] Zygaena transalpina: Larva (SE-France, north of Sisteron, July 2010) [M] Zygaena transalpina: Transalpinoid larva (Täschalpe, Valais, Switzerland) [N] Zygaena transalpina: Larva (S-Germany, Memmingen, Woringer Wälder, 11. June 2017) [S] Zygaena transalpina: Larva (S-Germany, Memmingen, Woringer Wälder, 11. June 2017) [S] Zygaena transalpina: Transalpinoid larva (Memmingen, Southern Germany) [N] Zygaena transalpina: Larva (Italy, Abruzzes, Rieti, May 2013) [M] Zygaena transalpina: Larva (Italy, Abruzzes, Rieti, May 2013) [M] Zygaena transalpina: Half-grown larva on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 26. May 2021) [M] Zygaena transalpina: Half-grown larva on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 26. May 2021) [S] Zygaena transalpina: Larva on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 13. June 2021) [S] Zygaena transalpina: Larva on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 13. June 2021) [S] Zygaena transalpina: Larva on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 13. June 2021) [S] Zygaena transalpina: Larva on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 26. June 2021) [S] Zygaena transalpina: Larva on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 26. June 2021) [S] Zygaena transalpina: Larva L1 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva L1 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva L1 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva L2 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva L2 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva L3 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva L3 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva L3 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva L3 (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva in the first hibernation in diapause skin (e.o. S-France, Ardèche, Ruoms, 2023) [S] Zygaena transalpina: Larva in the first hibernation in diapause skin (e.o. S-France, Ardèche, Ruoms, 2023) [S] Zygaena transalpina: Half-grown larva (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Half-grown larva (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Larva (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Cocoon (e.o. S-France, Ardèche, Ruoms, oviposition in June 2023) [S] Zygaena transalpina: Cocoon, still not completed (e.o., S-Germany, Heidenheim, oviposition in July 2022) [S] Zygaena transalpina: Cocoon, still not completed (e.o., S-Germany, Heidenheim, oviposition in July 2022) [S] Zygaena transalpina: Cocoon (e.o., S-Germany, Heidenheim, oviposition in July 2022) [S] Zygaena transalpina: Cocoon (e.o., S-Germany, Heidenheim, oviposition in July 2022) [S] Zygaena transalpina: Cocoon, artificially opened: brownish pupa (e.o., S-Germany, Heidenheim, oviposition in July 2022) [S] Zygaena transalpina: Cocoon, artificially opened: brownish pupa (e.o., S-Germany, Heidenheim, oviposition in July 2022) [S] Zygaena transalpina: Cocoon, still note completed (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Cocoon (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Cocoon, opened with few days old pupa: blackish (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Cocoon, opened with few days old pupa: blackish (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Cocoon, opened with 9 days old pupa: blackish (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Cocoon with pupa ready for hatching after 2 weeks (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Cocoon (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Cocoon with empty pupal skin after eclosion (e.o. Switzerland, Grisons, Oberalppass, 1600m, oviposition on 16. July 2022) [S] Zygaena transalpina: Empty cocoon on a limestone rock (S-Germany, Allgaeu Alps, Hinterstein, 1500m, 11. August 2013) [N] Zygaena transalpina: Cocoon [N] Zygaena transalpina: Cocoon (Kanisfluh, July 2010) [N] Zygaena transalpina: Adult of a yellow form (breeding, central Italy) [S] Zygaena transalpina: Habitat of a population that settles in humid-acid clearings in the German prealps [N] Zygaena transalpina: Small-scale larval habitat on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 13. June 2021) [N] Zygaena transalpina: Small-scale larval habitat on a small calc-tuff hummock in a mosaic of bog and fen (S-Germany, Kempter Wald, 13. June 2021) [N] Zygaena transalpina: Habitat at flight time in a bog woodland with rare alkaline hummocks and Hippocrepis comosa. Presumably the larvae also use the more common Lotus uliginosus there (S-Germany, Kempter Wald, July 2020) [N] Zygaena transalpina: Habitat at flight time in a bog woodland with rare alkaline hummocks and Hippocrepis comosa. Presumably the larvae also use the more common Lotus uliginosus there (S-Germany, Kempter Wald, July 2020) [N] Zygaena transalpina: Habitat in the Abruzzes (Italy, Rieti, Monte Terminillo, late September 2023) [N] Zygaena transalpina: Habitat in the Abruzzes (Italy, L'Aquila, Campo Felice, late September 2016) [N] Zygaena transalpina: Habitat (France, Ardèche, Ruoms, June 2023) [N] Zygaena transalpina: Habitat of a hippocrepidoid population on the Swabian Alb [N] Zygaena transalpina: Habitat on the eastern Swabian Alb (S-Germany, Heidenheim/Brenz, early July 2023) [N] Zygaena transalpina: Habitat in a limestone grassland that is rich in Hippocrepis comosa, Buphthalmum salicifolium and Scabiosa columbaria (S-Germany, eastern Swabian Alb, Heidenheim, July 2022) [N] Zygaena transalpina: Habitat on the eastern Swabian Alb (S-Germany, Oberkochen, June 2007) [N] Zygaena transalpina: Habitat in the Allgaeu Alps (S-Germany, Hinterstein, 1600m, 18. August 2012) [N] Zygaena transalpina: Habitat on the Kanisfluh (Vorarlberg, W-Austria), where also Zygaena fausta occurs (July 2010) [N]

Host plants:
In the first place the caterpillars feed on Hippocrepis comosa, but also Coronilla varia. Especially the nominate subspecies ssp. transalpina also lives on Lotus corniculatus or even Lotus uliginosus.

Habitat:
Zygaena transalpina inhabits mostly dry, sunny locations such as calcareous grasslands and alpine meadows on limestone, often with rocks.
But very locally Zygaena transalpina also occurs in forest clearings, even in damp forests. Near Memmingen/Allgäu (Southern Germany) a population lives in clearings in spruce forests on Lotus uliginosus together with Callimorpha dominula, Plebejus argus, and Aporia crataegi Nycteola degenerana in about 650m above sea level.

Life cycle:
In the mountainous limestone grasslands the flight time is usually rather late from July to early September. The caterpillars are mature in June and July.
On moist clearings around Memmingen Zygaena transalpina, however, already flies from June to mid-August. The caterpillars overwinter in the latter case larger, develop faster and become active again sooner in average after hibernation, which results in an earlier flight period despite of the cooler microclimates.

In S-France (Ardèche near Ruoms) I recorded imagines already in early June 2023. An ab ovo rearing resulted in both diapause larvae (as expected) and larvae that gave a partial second generation by late August.

Endangerment factors:
In the Alps Zygaena transalpina is unthreatened. In the lower mountains, however, it is clearly endangered by habitat destruction (eutrophication, reforestation, abandonment and subsequent succession or too heavy grazing on the other hand).
Clearcutting populations are severely threatened by continuous reforestation of all the areas, single-tree selection management, timber storage in the habitats and hunting facilities. At Memmingen many habitats have been created by the hurricanes of the early 90s, but these are largely no more suitable due to dense reforestation.

Remarks:
Zygaena transalpina is closely related to Zygaena angelicae.
In Central Europe, it is distributed in two tribes that had evolved in separate glacial refuges. Thus the Atlanto-Mediterranean Zygaena transalpina hippocrepidis came from the southwest (Iberian Peninsula) and occurs in Central Europa especially in the Jura region. The Adriato-Mediterranean Zygaena transalpina transalpina settled the Alps and the Rhine valley, coming from the south (glacial refuge in the Adriatic region). In parts of the northern Alps there are also intermediate populations (e.g. Allgaeu Alps and Western Austria).
The Ponto-Mediterranean Zygaena angelicae came from a southeastern refuge and has differentiated in a greater extent so that it now can be regarded as separate species. Compare, for example, Hofmann (in Ebert 1994).



Zygaena alluaudi | Zygaena angelicae | Zygaena anthyllidis | Zygaena brizae | Zygaena carniolica | Zygaena contaminei | Zygaena corsica | Zygaena cynarae | Zygaena diaphana | Zygaena ephialtes | Zygaena erythrus | Zygaena exulans | Zygaena fausta | Zygaena filipendulae | Zygaena hilaris | Zygaena ignifera | Zygaena johannae | Zygaena laeta | Zygaena lavandulae | Zygaena lonicerae | Zygaena loti | Zygaena minos | Zygaena nevadensis | Zygaena occitanica | Zygaena orana | Zygaena osterodensis | Zygaena oxytropis | Zygaena punctum | Zygaena purpuralis | Zygaena rhadamanthus | Zygaena romeo | Zygaena rubicundus | Zygaena sarpedon | Zygaena sedi | Zygaena trifolii | Zygaena viciae