Figs 25–36 in Three new Lethrus species close to L. raymondi (Coleoptera: Geotrupidae) from the Balkan Peninsula

Figs 25–36. Head, dorsal aspect. Maximally developed males: 25 – Lethrus (Lethrus) halkidikensis sp. nov. (holotype); 28 – L. (L.) perun sp. nov. (holotype); 31 – L. (L.) raymondi Reitter, 1890 (Greece: Néa Filadélfia – OHCB); 34 – L. (L.) strymonensis sp. nov. (holotype). Medium developed males: 26 – Lethrus (L.) halkidikensis sp. nov. (paratype, Greece: Tagarádes – OHCB); 29 – L. (L.) perun sp. nov. (paratype, Bulgaria: Khotovo – OHCB); 32 – L. (L.) raymondi (Greece: Néa Filadélfia – OHCB); 35 – L. (L.) strymonensis sp. nov. (paratype, Greece: Séres – OHCB). Underdeveloped males: 27 – Lethrus (L.) halkidikensis sp. nov. (paratype, Greece: Tagarádes – OHCB); 30 – L. (L.) perun sp. nov. (paratype, Bulgaria: Khotovo – OHCB); 33 – L. (L.) raymondi (Greece: Néa Filadélfia – OHCB); 36 – L. (L.) strymonensis sp. nov. (paratype, Greece: Séres – OHCB). Lettering: a – lateral longitudinal keel on base of ventral mandibular process. Schematically, not to scale.