Hydraena (Hydraena) biltoni Jaech & Diaz , 2012

Freitag, Hendrik, de Vries, Rick, Paterno, Marta, Maestri, Simone, Delledonne, Massimo, Thompson, Cameron G, Lamed, Helena, Lambert, Rebekah, Fox, Michael F, Gonzalez, Mariela C, Delocado, Emmanuel D, Sabordo, Marc R, Pangantihon, Clister V & Njunjic, Iva, 2021, Hydraena (s. str.) dinarica, new species (Coleoptera: Hydraenidae) along with further records of Hydraena spp. from Durmitor National Park, Montenegro and comments on the DNA barcoding problem with the genus, Biodiversity Data Journal 9, pp. 59892-59892 : 59892

Hydraena (Hydraena) biltoni Jaech & Diaz, 2012

Materials

Type status: Other material. Occurrence: recordedBy: Hendrik Freitag, Michael F. Fox, Rebekah Lambert; individualID: H69; sex: 3 males, 2 females; lifeStage: adults; associatedSequences: GenBank: MT784158.1; Location: locationID: MNE21c; continent: Europe; waterBody: small Black Lake tributary; country: MONTENEGRO; municipality: Žabljak; locality: Durmitor National Park ; verbatimLocality: small Black Lake tributary creek near war monument, pine forest, pebble in shallow run; verbatimElevation: 1435 m; verbatimCoordinates: 43 08 57N; 19 05 42E; Identification: identifiedBy: Hendrik Freitag, Rick De Vries, Cameron G. Thompson, Helena Lamed, Rebekah Lambert, Michael F. Fox, Mariela Gonzalez, Clister V. Pangantihon; Event: eventDate: 2019-07-16; Record Level: institutionCode: CFM, ZMB; collectionCode: Coleoptera; basisOfRecord: Dried specimens; informationWithheld: MONTENEGRO: Žabljak, Durmitor N.P., small Black Lake tributary creek near war monument, pine forest, pebble in shallow run, 1435 m a.s.l., 43 08 57N 19 05 42E, 16 July 2019, leg M.F. Fox, R. Lambert, H. Freitag (MNE21c)

Distribution

Hydraena biltoni (Fig. 3 A) is endemic to Montenegro. Previously, it was collected from the vicinity of Šavnik, about 20 km south of Žabljak and Biogradska Gora ( Jäch and Díaz 2012).

Remarks

We provide the first standard barcode for the species. It varies by only 0.3% from that of the closest congener H. morio Kiesenwetter, 1849 (Suppl. material 1). As H. biltoni is extremely similar to the latter, which also occurs in the region, thorough examination of the aedeagus is required for proper identification.

Habitat

The specimens were collected in a very small creek, flowing through pine forest and a wet meadow. Bottom pebbles, mixed with CPOM, in moderately fast flowing, shallow portions of the creek, were their microhabitat.

Figures

Figure 3. Digital habitus photograph of A) Hydraena biltoni ♂; B) H. minutissima ♂; C) H. morio ♀; D) H. nigrita ♂; E) H. subintegra, pale colouration of a teneral ♂ specimen; F) H. subintegra ♂, regular colouration; scale bar = 1.0 mm.