Map of the locations of the main sampling sites (handpicking localities are not included) Ecology of the ground beetles (Insecta: Coleoptera: Carabidae) from the Sarnena Sredna Gora Mts. Ecology of the ground beetles (Insecta: Coleoptera: Carabidae) from the Sarnena Sredna Gora Mts. Teodora Teofilova*, Nikolay Kodzhabashev *oberon_zoo@abv.bg Teodora Teofilova*, Nikolay Kodzhabashev *oberon_zoo@abv.bg Category Dominance structure No eudominant Laemostenus cimmerius 1 dominant Aptinus bombarda, Carabus montivagus, C. convexus, Molops piceus, Pterostichus oblongopunctatus 5 subdominant Abax carinatus, Calathus distinguendus, C. fuscipes, Carabus hortensis, [C. intricatus], Harpalus tardus, [Limodromus assimilis], Myas chalybaeus, [Xenion ignitum] 6 recedent Abax ovalis, A. parallelus, Brachinus crepitans, Br. explodens, Calosoma inquisitor, Carabus intricatus, C. coriaceus, Limodromus assimilis, Notiophilus rufipes, Pterostichus niger, Trechus quadristriatus, Xenion ignitum 12 Subrecedent all the rest 82 F Frequency of occurrence No > 50% constant 91%: Laemostenus cimmerius; 82%: Carabus convexus, Myas chalybaeus; 68%: Abax carinatus, Carabus montivagus; 64%: Carabus coriaceus, Trechus quadristriatus; 55%: Calathus fuscipes, Calosoma inquisitor, Harpalus tardus, Pterostichus oblongopunctatus 11 25–50% accompanying 45%: Carabus intricatus, Molops piceus, Notiophilus rufipes; 36%: Calathus distinguendus, Carabus hortensis, Xenion ignitum; 32%: Cychrus semigranosus, Pterostichus niger; 27%: Abax ovalis, Aptinus bombarda, Brachinus explodens, Carabus scabrosus, Laemostenus venustus, Molops alpestris 14 < 25% all other 81 Life forms No sp. % Class: Zoophagous Life form subclass: 1.1 – Phytobios 1.1.2 Stem-dwelling hortobionts 1 0.6 1.1.3 Leaf-dwelling dendrohortobionts 3 1.7 Life form subclass: 1.2 – Epigeobios 1.2.2 Large walking epigeobionts 12 6.9 1.2.2(1) Dendroepigeobionts 1 0.6 1.2.3 Running epigeobionts 3 1.7 1.2.4 Flying epigeobionts 3 1.7 Life form subclass: 1.3 – Stratobios Series: 1.3(1) – crevice-dwelling stratobionts 1.3(1).1 Surface & litter-dwelling 19 10.6 1.3(1).2 Litter-dwelling 16 9.1 1.3(1).3 Litter & crevice-dwelling 18 10.3 1.3(1).4 Endogeobionts 2 1.1 1.3(1).5 Litter & bark-dwelling 2 1.1 1.3(1).6 Bothrobionts 3 1.7 Series: 1.3(2) – digging stratobionts 1.3(2).1 Litter & soil-dwelling 21 12.0 1.3(2).2 Litter & crevice-dwelling 1 0.6 1.3(2).3 Bothrobionts 1 0.6 Life form subclass: 1.4 – Geobionts 1.4.1(1) Narrow-headed running & digging geobionts 1 0.6 Zoophagous total 107 61.0 Class Mixophytophagous Life form subclass: 2.1 – Stratobios 2.1.1 Crevice-dwelling stratobionts 9 5.1 Life form subclass: 2.2 – Stratohortobios 2.2.1 Stratohortobionts 16 9.1 Life form subclass: 2.3 – Geohortobios 2.3.1 Harpaloid geohortobionts 33 18.9 2.3.1(1) Crevice-dwelling harpaloid geohortobionts 2 1.1 2.3.2 Zabroid geohortobionts 5 2.6 2.3.3 Dytomeoid geohortobionts 3 1.7 Mixophytophagous total 68 39.0 This is the second part of the first purposive study on the ground beetles (Coleoptera: Carabidae) from Sarnena Gora Mts. So far, 175 species (23% of all Bulgarian Carabidae species) are to be found there. The present study aimed at analyzing the ecological structure of the carabid coenoses in relation to main ecological parameters, e.g. dominance structure, life form categorization, wing development, humidity and habitat preferences, with a subsequent assessment of the environmental trends and anthropogenic impact in the studied area. The species list is completed on the basis of the available bibliographic data and material collected during field trips carried out in 2017–2020. Ground beetles were collected with pitfall traps, hand picking and light attraction, and different types of habitats were sampled. Humidity preferences Humidity preferences H – hygrophilous MH – mesohygrophilous M – mesophilous MX – mesoxerophilous X – xerobiont, E – eurybiont Wing morphology Wing morphology m – macropterous D – wing di(poly)morphic b – brach