Trechus (Abunetrechus) habeshanicus Queinnec & Ollivier

Figs 21, 22, 28, 29

Trechus (Abunetrechus) habeshanicus: Quéinnec et al. 2021: 23; locus typicus: Guassa Plateau 10°17'19"N, 39°48'13"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.

98 exx. (males, females), Ethiopia, Amhara, northern Guassa Plateau, near Guassa Comm. Lodge 3330 m, 10°17'17"N, 39°47'54"E, 18.V.2022, leg. J. Schmidt, Yeshitla M. (CAF, CSCHM, NHMAA); 360 exx. (males, females), ditto, "Aste wuha" 3400 m, 10°24'N, 39°48'E, 19.V.2022, leg. J. Schmidt, Yeshitla M. (CAF, CSCHM, NHMAA); 11 exx. (males, females), ditto, "Yegana Natural Forest", river valley, 3125 m, 10°26'03"N, 39°47'16"E, 20.V.2022, leg. J. Schmidt, Yeshitla M. (CSCHM) .

Additions to the species description.

Mature species with elytra blackish brown, and with suture and first interval reddish brown lightened in most specimens ( Quéinnec et al. 2021: "suture distinctly darkened"; this information is probably based on confusion with T. bipartitus). Body length 4.1-5.0 mm ( Quéinnec et al. 2021: 4.1-4.3 mm). Length of aedeagus 0.70-0.80 mm. PW/PL = 1.28-1.38; n = 20. PW/TL = 1.08-1.13; n = 20. EL/AL = 3.00-3.33; n = 10.

Differential diagnosis.

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

Distribution.

Endemic to the Guassa Plateau of the northern Ethiopian Highlands.

Habitat.

Specimens of T. habeshanicus were found syntopic with T. guassaensis ( Quéinnec & Ollivier) and two hitherto undescribed Trechus species in humus and rotten plant material along brooks in the afromontane zone.