Trechus (Abunetrechus) lalibelae Queinnec & Ollivier, 2021

Faille, Arnaud, Hofmann, Sylvia, Merene, Yeshitla, Hauth, David, Opgenoorth, Lars, Woldehawariat, Yitbarek & Schmidt, Joachim, 2023, Explosive radiation versus old relicts: The complex history of Ethiopian Trechina, with description of a new genus and a new subgenus (Coleoptera, Carabidae, Trechini), Deutsche Entomologische Zeitschrift 70 (2), pp. 311-335 : 311

Trechus (Abunetrechus) lalibelae Queinnec & Ollivier

Figs 19 , 20 , 26 , 27

Trechus (Abunetrechus) lalibelae : Quéinnec et al. 2021: 21; locus typicus: Mt. Abuna Yosef, 12°08'32"N, 39°10'59"E.

Type material.

Not studied. Identification is based on the original description, including habitus and male genital figures of the type specimens ( Quéinnec et al. 2021), as well as on comprehensive material collected at the type locality (see below).

Additional material.

13 males, 11 females, Ethiopia, Amhara, Mt. Abuna Yosef , N-slope, 3800-3950 m, 12°07'52"N, 39°11'39"E, 4.III.2019, leg. D. Hauth, J. Schmidt, Yeshitla M., Yitbarek W. (SCHM, NHMAA) ; 1 male, 1 female, ditto, S-slope, 3850-3900 m, 12°07'29"N, 39°11'21"E, 5.III.2019, leg. D. Hauth, J. Schmidt, Yeshitla M., Yitbarek W. (CSCHM) ; 1 male, ditto, S-slope, 3700-3850 m, 12°09'10"N, 39°09'35"E, 5.III.2019, leg. D. Hauth, J. Schmidt, Yeshitla M., Yitbarek W. (CSCHM) .

Additions to the species description.

Body length 4.2-5.1 mm ( Quéinnec et al. 2021: 4.8-5.1 mm). Length of aedeagus 0.98-1.02 mm. PW/PL = 1.24-1.30; n = 20. PW/TL = 0.99-1.04; n = 20. EL/AL = 2.39-2.65; n = 10.

Differential diagnosis.

See Key to species of the subgenus Trechus Abunetrechus , below.

Distribution.

Endemic to the Abune Yosef mountains of the northern Ethiopian Highlands.

Habitat.

Specimens of T. lalibelae were found syntopic with T. bipartitus and T. sublaevis Raffray under stones and in humus and rotten plant material near brooks in the afroalpine zone.

Figures

Figures 17 - 20. Trechus subgenus Abunetrechus nov., dorsal aspect of body (17, 19), head and pronotum (18, 20). 17, 18. T. bipartitus Raffray; 19, 20. T. lalibelae Queinnec & Ollivier. The small white circles in Figs 18 and 20 mark the insertion points of the clypeal setae.

Figures 24 - 29. Trechus subgenus Abunetrechus nov., aedeagus in left lateral aspect (24, 26, 28) and dorsal aspect (25, 27, 29). 24, 25. T. bipartitus Raffray; 26, 27. T. lalibelae Queinnec & Ollivier; 28, 29. T. habeshaicus Queinnec & Ollivier.