Dicheirotrichus (s. str.) obsoletus (Dejean, 1829)

Pavlou, Christoforos, Bolanakis, Giannis, Kardaki, Ljubitsa & Trichas, Apostolos, 2025, Forty years of ground-beetle sampling in Crete. A major contribution to the Carabidae (Coleoptera, Adephaga) fauna of Crete (Greece), Contributions to Entomology 75 (2), pp. 269-288 : 269-288

20. Dicheirotrichus (s. str.) obsoletus (Dejean, 1829)

Figs 4 A , 5 G

Habitat and general distribution.

D. obsoletus has a Mediterranean distribution ( Jaeger and Kataev 2017). The species occurs in saline coastal habitats ( Austin et al. 2008; Arndt et al. 2011).

Material examined.

• Heraklion: Almyros River , salt-marsh, 35.339104°N, 25.061201°E, 1 m elev., 3.V.2012 – 3.VI.2012, pitfall traps 2 spms, leg. Aspradaki E. ( NHMC) ; • same data, but 1.VIII.2012 – 28.XI.2012, 3 spms ; • same data, but 28.XI.2012 – 30.V.2013, 1 spm ; • Aposelemis River mouth , 35.335000°N, 25.330891°E, 1 m elev., 6.XI.2014 – 5.12.2014, pitfall traps, 2 spms, leg. Pavlou Chr. ( NHMC) ; • same data, but 30.VII.2015 – 27.XI.2015, 4 ind ; • Tympaki, Kokkinos Pyrgos , salt-marsh, 35.074700°N, 24.746101°E, 1 m elev., 9.XII.2021, handpicking, 1 spm, leg. Bolanakis G. ( NHMC) .

Comments.

Dicheirotrichus obsoletus is reported from the Greek mainland (including Peloponnese) and the Aegean ( Arndt et al. 2011). This is the first time D. obsoletus is reported from Crete. It is important to note that, in addition to D. punicus (see below), this also constitutes the first documentation of the genus Dicheirotrichus on the island of Crete. Dicheirotrichus obsoletus has been collected from central Crete, both in north and south coastal saline wetlands and marshes.

Figures

Figure 4. Α. Dicheirotrichus obsoletus; B. Dicheirotrichus punicus; C. Agonum thoreyi; D. Agonum viridicupreum; E. Paranchus albipes; F. Pterostichus cursor; G. Pterostichus anthracinus; H. Calathus cinctus; I. Laemostenus venustus; J. Polistichus connexus. Scale bars: 2 mm (A); 1.9 mm (B); 2.2 mm (C); 2.1 mm (D); 2.3 mm (E); 2.1 mm (F); 2.7 mm (G); 2.2 mm (H); 3.4 mm (I); 2.2 mm (J).

Figure 5. Aedeagii. Α. Brachinus plagiatus; B. Brachinus psophia; C. Sirdenus grayii; D. Anaulacus ruficornis; E. Cymindis andrae; F. Ophonus puncticeps; G. Dicheirotrichus obsoletus; H. Parophonus hirsutulus; I. Pterostichus anthracinus; J. Calathus cinctus. Scale bars: 0.53 mm (A); 0.41 mm (B); 0.28 mm (C); 0.72 mm (D); 0.49 mm (E); 0.61 mm (F); 0.47 mm (G); 0.56 mm (H); 1.17 mm (I); 0.63 mm (J).