Notionotus parvus, González-Rodríguez & Short, 2022

Gonzalez-Rodriguez, Liza M. & Short, Andrew Edward Z., 2022, Revision of the water scavenger beetle genus Notionotus Spangler, 1972 in the Neotropical Region (Coleoptera, Hydrophilidae, Enochrinae), ZooKeys 1109, pp. 141-191 : 141

publication ID	https://dx.doi.org/10.3897/zookeys.1109.80775
publication LSID	lsid:zoobank.org:pub:A418DA2C-02DD-4023-A9F8-41FA0AEAAC83
persistent identifier	https://treatment.plazi.org/id/08140DE3-8B15-42F9-ADA9-3A1F952C1D3D
taxon LSID	lsid:zoobank.org:act:08140DE3-8B15-42F9-ADA9-3A1F952C1D3D
treatment provided by	ZooKeys by Pensoft
scientific name	Notionotus parvus
status	sp. nov.

Treatment

Notionotus parvus View in CoL sp. nov.

Figs 4F View Figure 4 , 9E View Figure 9 , 15 View Figure 15

Notionotus sp. 2 in Short, 2013: 88.

Type material.

Holotype (male): "SURINAME: Sipaliwini District/ N 2.97731°, W 55.38500°, 200 m/ Camp 4 (low), Kasikasima; sandy/ stream on trail to METS camp/ 20.iii.2012; SR12-0320-02A/ leg. A. Short; 2012 CI-RAP Survey" (NZCS). Paratypes (2 exs.): Suriname: same data as holotype (2 exs., SEMC, including DNA voucher SLE2388).

Differential diagnosis.

Notionotus parvus can be recognized by the pale reddish yellow color in the head and pronotum and reddish brown in the elytra (Fig. 4F View Figure 4 ). Furthermore, the aedeagus is quite unique, parameres tubular in shape with lanceolate appendages in the outer margin which are shorter than the length of the parameres, and gonopore with crown-shape located in the apical region of the median lobe (Fig. 9E View Figure 9 ).

Description.

Size and form: Body length 1.7-1.9 mm. Body form elongate oval, convex in lateral view (Fig. 4F View Figure 4 ). Color and punctation: Dorsally reddish brown, head and pronotum pale reddish yellow; pronotum with two small black round spots along posterior margin; elytra dark reddish brown (Fig. 4F View Figure 4 ). Ventrally reddish brown; maxillary palps and mouthparts light yellow reddish, and antennae yellow (antennal club slightly darker). Pro and meso legs yellow, meta legs pale reddish brown. Clypeus and labrum with dense, fine, and weakly impressed ground punctation (punctures separated by 2 × their width); pronotum and elytra ground punctation fine, weakly impressed and sparser than on head (punctures separated by 3 × their width). Head: Clypeus and labrum shallowly emarginate anteromedially, lateral margins of the labrum bearing setae. Thorax: Prosternum carinate medially, strongly raised, acute and pointing anteriorly. Elevation of mesoventrite with two transversal ridges, elevated medially, lateral sides concave; longitudinal ridge broad anteriorly and sharp posteriorly, the point where the three ridges merged wide and blunt (e.g., Fig. 10C, D View Figure 10 ); elevation slightly convex in ventral view; mesoventrite with triangular shape in ventral view. Metaventrite convex in the median region, pubescent with narrow glabrous patch on the medial and posterolateral area; anterior margin extending to mesoventrite elevation. Metafemora with dense hydrofuge pubescence along basal three-quarters of the anterior margin and sparse pubescence along the apical posterior margin. Abdomen: Abdominal ventrites very densely pubescent. Aedeagus (Fig. 9E View Figure 9 ) with basal piece 0.5 × the length of a paramere. Base of the parameres narrower than the base of the median lobe; parameres tubular shape, outer margins sinuate and covered by lanceolate appendages that cover three-quarters of the margin; inner margins sinuate, apex of the parameres rounded. Median lobe shorter than the parameres, wide at basal region, narrowing apically, apex rounded and wide; gonopore crown-shaped and situated at apex of median lobe.

Etymology.

The species name is derived from the Latin word parvus meaning little or small in reference to the small aedeagus size of this species.

Distribution.

Only known from the type locality in southern Suriname (Fig. 15 View Figure 15 ).

Life history.

This species was collected along the margins of a small, sandy-bottomed stream.