Aegognathus dulima Cáceres, Ríos-Málaver and Grossi, 2019

Cáceres, Juan Sebastián D. & Grossi, Paschoal Coelho, 2023, Taxonomic revision of Aegognathus Leuthner, 1883 (Coleoptera: Lucanidae), Journal of Natural History 57 (9 - 12), pp. 557-595 : 589

Aegognathus dulima Cáceres, Ríos-Málaver and Grossi, 2019

( Figure 5e : holotype J)

Aegognathus dulima Cáceres et al., 2019: 2150 (original combination and description)

Examined material

Holotype J labelled: Colômbia, Tolima, Ibagué, Termales el Rancho, Cañon del Río Combeima , 31.viii.2014, 4.0817°N, 79.727°W, 2987 m, luminosa – Y. Gutiérrez and I. C. Ríos-Málaver. 1J ( CERPE).

Diagnosis

Body black, with distinct bluish and reddish reflections. Head setose along the anterior margin. Eyes slightly emarginate; mandibles dorsally carinate at the base, wavy internally, with a subtriangular median tooth and two rounded basal teeth. Three longitudinal costae over the elytra. Abdominal ventrites with yellowish setae, especially along ventrite V; Ventrite I–IV with wrinkled lateral margins. Genitalia ( Figure 8e ) small compared with other Aegognathus species, with a short and flat everted sac. For the complete description see Cáceres et al. (2019).

Distribution

Colombia, Northern Central Cordillera. Magdalena province ( Morrone et al. 2022).

Remarks

Aegognathus dulima is the second Colombian species of this genus; it was recently described by Cáceres et al. (2019) and represents the first description for Aegognathus after the important contributions published by Arnaud and Bomans between 2000 and 2010 . Besides being the second species of the genus known from Colombia, it is the one with the highest altitude record, collected close to 3000 m asl, in the proximity of the snow-capped mountain ′ Nevado del Tolima ̍, located in a region of high conservation value . Until now only the holotype male was known. For the complete description see Cáceres et al. (2019).

Figures

Figure 5. Dorsal habitus of Aegognathus damasoi Arnaud and Bomans, 2006: (a) Male and (b) female (CERPE).Aegognathus aguirei Arnaud and Bomans, 2007: (c) male and (d) female (CERPE).Aegognathus dulima Cáceres, Ríos-Málaver and Grossi, 2019: (e) holotype male (CERPE). Aegognathus arnaudi Cáceres, Ríos-Málaver and Grossi, 2019: (f) holotype male and (g) paratype female (CERPE). Scale bars: 5 mm.

Figure 8. Ventral view of A. damasoi (a) male aedeagus and (b) female genitalia. Aegognathus aguirei (c) male aedeagus and (d) female genitalia. (e) Aegognathus dulima male aedeagus. Aegognathus arnaudi: (f) male aedeagus and (g) female genitalia. Scale bars: 1 mm.