Speoplanes, Muller, 1911

Vrbica, Maja, Vesović, Nikola, Rađa, Tonći & Ćurčić, Srećko, 2024, A new subspecies of the subterranean beetle Speoplanes biocovensis Müller, 1934 (Coleoptera: Leiodidae: Cholevinae: Leptodirini) from Bosnia and Herzegovina: the first occurrence of the genus outside Croatia, Zootaxa 5405 (3), pp. 422-432 : 430

Key to the identification of taxa of the genus Speoplanes

1a. Antennae longer, protibiae longer than head and pronotum together, metatibiae longer than elytra, sclerites of inner sac compact and curved, median lobe of aedeagus apically rounded (Mt. Mosor, Croatia)............................. S. giganteus

1b. Antennae shorter, protibiae as long as head and pronotum together or shorter, metatibiae as long as elytra or shorter, sclerites of inner sac thin and straight, median lobe of aedeagus apically flattened (Mts. Biokovo and Mali Šibenik, Croatia, and the surroundings of the town of Ljubuški, Bosnia and Herzegovina) [ S. biocovensis ]................................... 2

2a. Protibiae as long as head and pronotum together, metatibiae as long as elytra, pronotum on average slightly longer than wide, widest at posterior angles in females, mesoventral carina more pronounced, with a less conspicuous tooth, elytra of males less elongate (Mts. Biokovo and Mali Šibenik, Croatia)...................................... S. biocovensis biocovensis

2b. Protibiae shorter than head and pronotum together, metatibiae shorter than elytra, pronotum on average as long as wide, widest just in front of middle in females, mesoventral carina less pronounced, with a more conspicuous tooth, elytra of males more elongate (near the town of Ljubuški, Bosnia and Herzegovina)......................... S. biocovensis bosnicus ssp. n.