Sundaquedius abbreviatus Brunke, 2021

Brunke, Adam J., 2021, New relictual genera in Cyrtoquediini and Indoquediini (Coleoptera: Staphylinidae: Staphylininae), ZooKeys 1076, pp. 109-124 : 109

publication ID

https://dx.doi.org/10.3897/zookeys.1076.73103

publication LSID

lsid:zoobank.org:pub:7A0C4169-2065-4FD9-AC8D-4470A0468B63

persistent identifier

https://treatment.plazi.org/id/CBC36A0B-D8DC-46C0-BB10-84D68131930E

taxon LSID

lsid:zoobank.org:act:CBC36A0B-D8DC-46C0-BB10-84D68131930E

treatment provided by

ZooKeys by Pensoft

scientific name

Sundaquedius abbreviatus Brunke
status

sp. nov.

Sundaquedius abbreviatus Brunke sp. nov.

Figs 1D-F View Figure 1 , 2A-F View Figure 2

Type locality.

35 km north of An Khê, near Buôn Lư ới village, Gia Lai, Vietnam [ca. 14.32, 108.58].

Type material.

Holotype (male, CNC): Vietnam, 35 km N An Khe, Buon Luoi, 2.VII.1984 / AJB0001487 [white label] / HOLOTYPE Sundaquedius abbreviatus Brunke, des. A. Brunke 2021 [red label] Paratypes (5, ZIN): same data as the holotype but with labels: PARATYPE Sundaquedius abbreviatus Brunke, des. A. Brunke 2021 [yellow label]. Identifiers: AJB0001334, AJB0001488-1491

Etymology.

The species epithet means ‘shortened’ or ‘reduced’, and refers to the shorter dorsal rows of punctures on the pronotum compared to S. nigropolitus .

Diagnosis.

Sundaquedius abbreviatus can be distinguished by the presence of only two or three punctures in the dorsal row of the pronotum.

Description.

Measurements. Male (n = 2): HW/HL 1.30-1.35; PW/PL 1.06-1.08; EW/EL 1.22-1.24; PW/HW 1.14-1.19; forebody length 4.9-5.4 mm. Female (n = 4): HW/HL 1.25-1.29; PW/PL 1.03-1.10; EW/EL 1.13-1.15; PW/HW 1.21-1.23; forebody length 4.7-5.0 mm.

Similar to S. nigropolitus and differing only in the following: antennomeres dark except apical three segments paler, becoming successively paler to antennal apex; maxillary and labial palpi paler, entirely medium reddish brown; head, without additional punctures between named punctures, distinctly transverse, more so in males, head also broader relative to pronotum in males; antennae overall more robust, with apical segments less strongly transverse; pronotum slightly to distinctly transverse, with two or three punctures in the dorsal row, third puncture, when present, smaller, sometimes rudimentary and without seta; elytra more transverse than in S. nigropolitus , and even more so in males, with two discal rows and without scattered additional punctures; abdominal tergites III and IV with distinct impressions, V with only vague impression; abdominal punctation slightly denser but punctures generally still well separated.

Male with sternite VII broadly but shallowly emarginate; sternite VIII with slightly deeper emargination and distinct, triangular impressed and glabrous area; tergite X elongate, with distinct shallow emargination, with many long setae at apex (Fig. 2D View Figure 2 ); sternite IX with bulky, asymmetrical base, apex deeply emarginate (Fig. 2E View Figure 2 ); median lobe of aedeagus in ventral view subparallel sided, narrowing to rounded, acute apex, paramere with broad base, becoming slender to strongly acute apex (Fig. 2A View Figure 2 ); median lobe in lateral view with nearly straight ventral face, with short, rounded apical part (Fig. 2C View Figure 2 ); apex of paramere with short, sparse paired row of marginal peg setae (Fig. 2B View Figure 2 ); aedeagus with ventral paired copulatory sclerites broadest at base and strongly narrowed to sharp apex. Female tergite X similar to that of S. nigropolitus but with slightly narrower apex (Fig. 2F View Figure 2 ).

Distribution.

Known only from the type locality in the central highlands of Vietnam.

Bionomics.

Nothing specific is known about this species but the type locality is at approximately 700-800 m, so this species likely occurs elsewhere in lower montane forests of central Vietnam and possibly adjacent Cambodia.