Aegognathus waterhousei Leuthner, 1883

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 : 570-571

Aegognathus waterhousei Leuthner, 1883

( Figure 2c : holotype male)

Aegognathus waterhousei Leuthner, 1883: 445 (original combination and description)

Examined material

Type material. Holotype male examined from photographs labelled as follows: ′(a) white typed and green bordered label, ′ Peru / 79 17̍; (b) white typed label, ′162̍; (c) illegible; (d) red circled label, ′ Type ̍; € white typed and handwritten label, ′ Aegopsis [sic] waterhousei Type ̍. 1 J̍ ( NHM).

Additional material

Peru, Arpayo, Satipo, Junín, ii . 2008, G. Pross. 1J ( CERPE).

Diagnosis

Body entirely black with some bluish and reddish reflections. Head and pronotum finely punctate. Mandibles with truncate to rounded apex. Elytra strongly punctate with yellowish scale-like setae. Last abdominal ventrites carinate along lateral margins, also presenting a transverse carina on the anterior margin of ventrites III–V. Last abdominal ventrite presenting two lateral tubercles with a group of setae at the apex. Aedeagus almost four times longer than wide, cross bar ′X̍ shaped with two acuminate projections at the posterior margin. For the complete description see Cáceres et al. (2019).

Distribution

Southern Peru, Central Cordillera, Ucayali-Rondônia provinces ( Morrone et al. 2022).

Remarks

Despite being the type species of the genus, A. waterhousei is barely represented among collections. Other specimens from different collections of CERPE, LBC, and UNSM previously identified as A . waterhousei were actually another species, Aegognathus arnaudi Cáceres, Ríos-Málaver and Grossi, 2019 . To our knowledge the only specimens properly identified as A. waterhousei are the holotype, deposited at NHM, and one male collected in 2008, deposited at CERPE.

Figures

Figure 2. Dorsal habitus of Leptinopterus caledoniaensis (Grossi, Racca-Filho and Vaz-de-Mello 2003): (a) male and (b) female from CERPE; (c) male holotype Aegognathus waterhousei Leuthner, 1883 from NHM. Aegognathus leuthneri Van De Poll, 1886 from CERPE: (d) major male, (e) minor male and (f) female. Scale bars: 5 mm.