Novochares xingu, Short & Girón, 2023

Short, Andrew Edward Z. & Giron, Jennifer C., 2023, Revision of the Neotropical water scavenger beetle genus Novochares Giron & Short (Coleoptera, Hydrophilidae, Acidocerinae), ZooKeys 1171, pp. 1-112 : 1

publication ID

https://dx.doi.org/10.3897/zookeys.1171.104142

publication LSID

lsid:zoobank.org:pub:267D0D45-59CA-4A18-A080-34768E652607

persistent identifier

https://treatment.plazi.org/id/678985D5-F6F5-4AA1-A07A-DAA5497F4088

taxon LSID

lsid:zoobank.org:act:678985D5-F6F5-4AA1-A07A-DAA5497F4088

treatment provided by

ZooKeys by Pensoft

scientific name

Novochares xingu
status

sp. nov.

Novochares xingu sp. nov.

Figs 27D, E View Figure 27 , 29B View Figure 29

Type material.

Holotype (male): "BRAZIL: Pará: Rio Xingu/ Camp (3°39'S, 52°22'W)/ Altamira (ca. 60 km S.)/ 10 Oct 1986/ P. Spangler & O. Flint", "Colln. #19, 1st jungle/ stream on trail 4" (USNM). Paratypes (3 exs.): Brazil: Pará: Same data as type except 12.x.1986, pond at 2nd palm grove on trail 1, Colln. #21 (1, SEMC); same data as type except 15.x.1986, pond at 2nd palm grove on trail 1, Colln. #24 (2, USNM).

Differential diagnosis.

See differential diagnosis for N. trifurcatus .

Description.

Body length 7.6-8.0 mm. Coloration: Dorsal surfaces dark brown and sheeny, with slightly paler margins of pronotum and elytra. Head: Maxillary palps nearly 1.4 × longer than width of head, uniformly orange to brown in color. Thorax: Ground punctation on pronotum and elytra dense and very shallowly impressed. Elytra without rows of serial punctures, each with very faint rows (one dorsal and two or three lateral) of scarce and weakly marked systematic punctures. Prosternum flat. Posterior elevation of mesoventrite with posterior face somewhat bisinuate and medial longitudinal ridge extending anteriorly (resembling a nose). Abdomen: Apical emargination of fifth ventrite relatively deep, U-shaped. Aedeagus: (Fig. 27D, E View Figure 27 ) Overall shape pear-like, 2.9 × longer than wide; lateral projection on apical region of outer margin of each paramere pointed; at closest point, dorsal inner margins of parameres separated by distance 0.5 × greatest width of a paramere; dorsal plate of median lobe with neck 0.6 × as broad as base; arms of dorsal plate of median lobe gradually and weakly narrowing towards apex, parallel, with apex narrowly and dorsally pointed, nearly 0.25 × length of dorsal plate of median lobe; notch between arms at base slightly narrower than base of an arm; ventral plate of median lobe weakly sclerotized, triangular, apically acute, apex extending to mid-length of dorsal plate; basal piece 0.33 × length of a paramere. In lateral view, aedeagus flattened, somewhat triangular, with ventral outline of parameres 5.8 × longer than greatest width near base; dorsal outline nearly straight.

Etymology.

Xingu, in reference to the Xingu peoples of the region where this species is found.

Distribution.

Known only from several collections at the type locality in Brazil ( Pará) (Fig. 29B View Figure 29 ).

Habitat.

The label data indicate specimens were taken from a "jungle stream" and a “pond”.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hydrophilidae

Genus

Novochares