Carstvo: Animalia
Podcarstvo: Eumetazoa
Tip: Arthropoda
Podtip: Hexapoda
Klasa: Insecta
Red: Lepidoptera
Nadfamilija: Papilionoidea
Familija: Papilionidae
Podfamilija: Papilioninae
Rod: Papilio
Opis: Lastin repak je jedan od najpoznatijih dnevnih leptira Evrope. Najsličniji mu je prugasti jedrilac, koji se češće sreće u ovom delu Evrope. Ipak, lastin repak se jednostavno razlikuje već u letu, po intenzivnije žutoj nijansi krila. Iz bliza su razlike u izgledu krila uočljivije, te ga je gotovo nemoguće pomešati sa srodnim leptirima.
Ekologija: Nije preterano izbirljiv po pitanju staništa, ali se najčešće nalazi na krečnjačkim kamenjarima. Zalazi i blizu ljudskih naselja pošto se njegove gusenice često razvijaju na gajenoj mirođiji. Biljake hraniteljke gusenica su mnogobrojne, pripadaju rodovima Aegopodium, Anethus, Angelica, Bupleurum, Carum, Daucus, Dictamnus, Festula, Foenicurum, Peucedanum, Pimpinella, Ruta, Seseli, Silaum,… Mužjaci se često grupišu u velikom broju na vrhovima brda i planina.
Rasprostranjenost: Naseljava najveći deo Evrope, Azije i Severne Amerike, kao i Severnu Afriku. U Srbiji se sreće svuda, ali se retko viđa veliki broj jedinki.

Crvene liste

Hrvatska NT
Broj nalaza po MGRS 10k polju }}
MGRS 10k polje Broj nalaza Prisutno u literaturi
33TUK98 4
33TUK99 3
33TUL92 2
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33TVG82 2
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