Brounea Park & Carlton

Park, Jong-Seok & Carlton, Christopher E., 2015, Brounea, a new genus (Coleoptera: Staphylinidae: Pselaphinae) from New Zealand, with descriptions of nine new species, Zootaxa 3990 (4), pp. 551-566 : 552

publication ID	https://doi.org/ 10.11646/zootaxa.3990.4.4
publication LSID	lsid:zoobank.org:pub:A171FB7E-150D-4741-8045-A9BAE861B1C0
DOI	https://doi.org/10.5281/zenodo.6112088
persistent identifier	https://treatment.plazi.org/id/630188FE-BA9B-4408-A7BA-525CB1A6D1C9
taxon LSID	lsid:zoobank.org:act:630188FE-BA9B-4408-A7BA-525CB1A6D1C9
treatment provided by	Plazi
scientific name	Brounea Park & Carlton
status	gen. nov.

Treatment

Genus Brounea Park & Carlton View in CoL gen. nov.

Type species. Sagola setiventris Broun, 1915: 282 ; here designated.

Gender. Feminine.

Diagnosis. Members of Brounea can be distinguished from other faronite genera by the following combination of characters: small body, length 1.2–2.4 mm; antennomeres 1–2 approximately 1.5 times longer than wide, 3 subquadrate; prosternum lacking lateral procoxal foveae ( Fig. 3 View FIGURE 3 n); mesoventrite lacking promesocoxal foveae ( Fig. 3 View FIGURE 3 o); abdominal tergites IV–VI with discal carinae; abdominal sternites IV–VI with basolateral foveae; head with frontal sulcus ( Figs. 2 View FIGURE 2 a–k); parameres of male genitalia symmetrical with at least 6 setae at apex ( Figs. 3 View FIGURE 3 a–k); known from North Island and Three Kings Islands ( Figs. 4–5 View FIGURE 4 View FIGURE 5 ).

Description. Body length 1.2–2.4 mm. Body brown, antennae, legs, maxillary palpi and elytra paler ( Fig. 1 View FIGURE 1 ). Head. Antennae gradually clavate, reaching hind margin of prothorax. Head bluntly triangular with rostrum separated by frontal sulcus ( Figs. 2 View FIGURE 2 a–k). Frontal sulcus present, reaching from front margin to mid-point of eye ( Figs. 2 View FIGURE 2 a–k). Thorax. Prosternum bearing median procoxal fovea, lacking lateral procoxal foveae ( Fig. 3 View FIGURE 3 n). Scutellum inverted-triangular. Mesoventrite lacking promesocoxal foveae, bearing pairs of large lateral mesosternal and lateral mesocoxal foveae ( Fig. 3 View FIGURE 3 o). Metaventrite with a pair of lateral metasternal foveae ( Fig. 3 View FIGURE 3 o). Abdomen. Abdominal tergites IV–VI with discal carinae. Abdominal tergite and sternite VI largest, but only slightly larger than V ( Figs. 1 View FIGURE 1 , 3 View FIGURE 3 p–q). Aedeagus. Phallobase bulky and round ( Figs. 3 View FIGURE 3 a–k). Parameres symmetrical, punctate along mesial margins ( Figs. 3 View FIGURE 3 a–k). Each paramere with at least 6 apical setae ( Figs. 3 View FIGURE 3 a–k).

Remarks. Males of some species possess secondary sexual characters, including swollen ventral surface of head ( Figs. 2 View FIGURE 2 m, 2o, 2q, 2t), dense setae within gular depression ( Figs. 2 View FIGURE 2 q–s, 2u–v), and abdominal sternite VI or VII with setose depression ( Figs. 3 View FIGURE 3 p–q). Other species exhibit no apparent sexual dimorphism except abdominal sternite IX. Male abdominal sternite IX is usually fragile, and partially concealed by sternite VIII, rendering it simple and reduced in appearance. Females possess a more robust, triangular abdominal sternite IX bearing a pair of long setae that are usually visible in ventral view. Female genitalia, including spermathecae, apparently are membranous and were not observable after clearing specimens using 10% potassium hydroxide.

Etymology. This genus is named for the most influential pioneer of the study of New Zealand Coleoptera , including Faronitae, Thomas Broun.