Grouvellinus sp. 2, Champion, 1923

Freitag, Hendrik, Molls, Christian, Bouma, Aglaia M., Garces, Jhoana M., Rossato, Marzia, Cosentino, Emanuela & Delledonne, Massimo, 2019, Additional new species of Grouvellinus Champion 1923 (Insectaı Coleopteraı Elmidae) discovered by citizen scientists and DNA barcoded in the field applying a novel MinIONbased workflow, Journal of Natural History 53 (41), pp. 2593-2620 : 2616-2617

Grouvellinus sp. 2

( Figure 9 )

Material examined. 2♀ [H57] (SP) ‘ MALAYSIA: Sabah: Lucia River ; rock surface, run; primary forest; ca. 4°28 ʹ 34 ʹʹ N, 117°55 ʹ 38 ʹʹ E, ca. 750 m a.s.l., leg. Taxon Expedition participants 10.March.2018 (6g)M ’.

Remarks

These robust specimens also represent a species that is unknown to science. They were found sympatric with some of the new species described above at Lucia River. This unnamed species can clearly be distinguished from all known Grouvellinus of Borneo by the moderately large size (CL: 2.1 mm; EW: 1.0 mm), broad elytra with distinctly elevated and carinate intervals 3 – 8, and the comparably short and broad legs. We refrain from a formal description because of the same reasons mentioned in the former taxon. The mtDNA barcode provided in here ( LR738844 ) varies by 12.5 – 17.7% from all known Grouvellinus species of Borneo.

Figures

Figures 6–9. Habitus of the Grouvellinus species collected from the Tawan Hills Park. 6: G. luciaensis, sp. nov. (paratype male from Lucia River); 7: G. borneensis, sp. nov. (paratype male from Tawau River environment); 8: G. sp.1 (female from Tawau River environment); 9: G. sp.2 (female from Lucia River). Scale: 1 mm.