Garreta australugens Davis & Deschodt

Davis, Adrian L. V. & Deschodt, Christian M., 2018, Two new species of Garreta Janssens, 1940 (Coleoptera: Scarabaeidae: Scarabaeinae) from Southern Africa, Zootaxa 4450 (2), pp. 242-248: 243

publication ID

https://doi.org/10.11646/zootaxa.4450.2.4

publication LSID

lsid:zoobank.org:pub:A661882F-BE01-4C1D-A939-5F543287F6C3

persistent identifier

http://treatment.plazi.org/id/03E6AF32-FFD4-7641-85EB-FD4CFD7EF8AE

treatment provided by

Plazi

scientific name

Garreta australugens Davis & Deschodt
status

new species

Garreta australugens Davis & Deschodt  , new species

Figs 1–4View FIGURE 1View FIGURE 2View FIGURE 3View FIGURE 4

Description of holotype. Holotype ♂: 20.3 x 11.6 mm (length with head extended x maximum width). Habitus uniformly charcoal black.

Head. Clypeus with four well defined denticles; middle two denticles larger and separated by right-angled gap; clypeal surface with large, irregular granules that are close together but clearly separated by dense microgranulation.

Pronotal disc. Surface of pronotum with small more or less rounded and irregularly spaced granules that are separated by less than one or two granule diameters; area between granules, micro-granular giving a shagreened appearance. Longitudinal midline almost indiscernible. Two very short diagonal grooves (basal impressions) on each side of midline at the base of pronotum.

Elytra. Surface sculpture of elytral interstriae similar to pronotum, i.e. large granules separated by one to three granule diameters; area between granules very finely microgranular with a shagreened appearance. First elytral striae next to midline with widely spaced and very faint punctures; all other striae apunctate, narrow, unclear and shagreened.

Anterior legs. Narrow and slightly curved inwards.

Aedeagus. Similar to other species of Garreta  ( Fig. 3View FIGURE 3).

Sexual dimorphism. Inward curving front legs of male type material narrower than those of females. Terminal spur of front legs acute in females and more blunt in males.

Variability. The colour of paratype specimens is uniform with no variation; size of paratype specimens varies from slightly smaller to slightly larger than the holotype.

Etymology. The name is a combination of the specific name of its closest relative Garreta lugens  and its southern distribution.

Type specimens examined. Holotype ♂: "Wildlife College, Site 3, S24°32’27” E31°20’23”, 23-25.xi.2009, C. Du Toit & C. Jacobs. ", in SANCAbout SANCGoogleMaps  . Paratypes: 2 spec. same data as holotype, in UPSAAbout UPSAGoogleMaps  ; 1 spec. "S. Afr. ; Transvaal, Pafuri, 29.3.73., Potg.&Scholtz", in TMSAAbout TMSA  ; 1 spec. " Bubye River S. Rhodesia 29/10/73, N.J.Duke ", in TMSAAbout TMSA  ; 2 spec. "2553a. Satara , KNPAbout KNP, 19.I.82, Various soil and vegetation types, Doube & Macqueen, COLS01270 ", in SANCAbout SANC  ; 1 spec. "329, GORONGOSA N.P., Mozam. 11-28.I.72, Bornemissza & Kirk, COLS08747 ", in SANCAbout SANC  ; 1 ♂ spec. "BIRCHENOUGH BRIDGE, Rhod. (60 kms E) 18.I.74, H.H. Aschenborn, COLS08748 ", in SANCAbout SANC  . All SANCAbout SANC specimens (except holotype) have two additional determination labels: Garreta lugens (Fairmaire, 1891)  , det  . CSIRO, DBRU and Garreta lugens (Fairmaire, 1891)  , det. ALV Davis, 2013.

Differential diagnosis. This new species can be easily separated from Garreta lugens  by pronotal granulation; granules are clearly separate and more or less round in Garreta australugens  new species, whereas those of G. lugens  are often connected forming irregular shapes.

SANC

Agricultural Research Council-Plant Protection Research Institute

UPSA

University of Pretoria

TMSA

Transvaal Museum

KNP

South African National Parks