Austrelatus wanggarensis, Shaverdo & Hájek & Hendrich & Surbakti & Panjaitan & Balke, 2023

Shaverdo, Helena, Hajek, Jiri, Hendrich, Lars, Surbakti, Suriani, Panjaitan, Rawati & Balke, Michael, 2023, Austrelatus gen. nov., a new genus of Australasian diving beetles (Coleoptera, Dytiscidae, Copelatinae), with the discovery of 31 new species from New Guinea, ZooKeys 1170, pp. 1-164 : 1

publication ID	https://dx.doi.org/10.3897/zookeys.1170.103834
publication LSID	lsid:zoobank.org:pub:17F0C88A-2F0B-414A-AA7C-8B0AB89B6E6E
persistent identifier	https://treatment.plazi.org/id/7EEF6D34-CB97-4AB5-84B3-C647F5473FA5
taxon LSID	lsid:zoobank.org:act:7EEF6D34-CB97-4AB5-84B3-C647F5473FA5
treatment provided by	ZooKeys by Pensoft
scientific name	Austrelatus wanggarensis
status	sp. nov.

Treatment

32. Austrelatus wanggarensis sp. nov.

Figs 67 View Figures 66–69 , 71 View Figure 71 , 84 View Figure 84 , 88 View Figures 87, 88

Type locality.

Indonesia: Papua Province: Nabire Regency, Wanggar - Kali Bumi.

Type material.

Holotype: male "W.-Neuguinea /Paniai Prov./ Wanggar- Kali Bumi / IR 14 30.9 & 1.10.90 leg: Balke & Hendrich" (ZSM).

Description.

Body size and form: Beetle small, with oblong-oval habitus (Fig. 1 View Figures 1, 2 ).

Measurements: Holotype: TL 4.9 mm, TL-H 4.45 mm, MW 2.3 mm, TL/MW 2.13; PL 0.65 mm, PW 2 mm, PL/PW 0.33; DBE 0.85 mm, DBE/PW 0.43.

Colouration: Dorsally piceous, with yellowish red head, pronotal sides, and basal band and one apical spot on elytron (Fig. 67 View Figures 66–69 ).

Head yellowish red, darker narrowly behind eyes. Pronotum dark brown on disc and paler towards sides, yellowish red on them. Elytron piceous, with a yellowish red, rather straight basal band not reaching suture and lateral margin and with a distinct elongate yellow apical spot. Scutellum piceous. Antennae, other head appendages, and pro- and mesolegs proximally yellowish red, metalegs reddish brown, legs darker distally. Venter reddish brown.

Surface sculpture: Elytron with 11 complete dorsal striae; submarginal stria present: 11+1 (Fig. 67 View Figures 66–69 ).

Head without strioles, with rather dense punctation (spaces between punctures 1-3 × size of punctures); punctures relatively fine (diameter of punctures usually equal to diameter of microreticulation cells); head with a row of coarse setigerous punctures along inner margin of each eye and a short row at frontal angle of each eye; a slightly longer puncture row forms fronto-clypeal depression at each head side; microreticulation distinct. Pronotum usually with only few indistinct strioles in posterolateral angles; with fine longitudinal wrinkles at posterior margin; pronotal punctation finer than on head; setigerous punctures form a row along pronotal margins, absent in posterior middle; disc of pronotum with indistinct longitudinal median scratch. Pronotum with fine microreticulation. Elytron with 11 dorsal striae; striae 2-4 and 6 complete, striae 1 and 5 usually shortly reduced basally; submarginal striae present. Elytron with fine punctation and microreticulation. Ventral part with fine, inconspicuous punctation, invisible on metaventrite and metacoxae and weak on abdominal ventrites; prosternum smooth medially; metaventrite and metacoxae with weak microreticulation; on abdominal ventrites microreticulation almost invisible; metacoxal plates with numerous, distinctly impressed longitudinal strioles, abdominal ventrites 1 and 2 with numerous, long, longitudinal strioles from margin to margin, on abdominal ventrites 3 and 4 strioles situated laterally and turn to middle, almost horizontal, abdominal ventrites 5 and 6 without strioles but with fine punctation that sparser medially and forms a dense, rugose lateral area at each side.

Structures: Head broad. Pronotum short and broad; lateral margins distinctly convergent anteriorly. Base of prosternum narrowly rounded anteriorly, convex medially; blade of prosternal process rather short and narrow, convex in middle.

Male: Protibia straight, not modified. Proclaws simple, rather long, subequal in length. Median lobe of aedeagus with two lobes of dorsal sclerite rather narrow; left dorsal lobe shorter that right one, with weak, long lateral crest and apex curved downwards, not to left, dorsally with distinct denticulation (spinulae) invisible in lateral left view due to weak curvation to left; right dorsal lobe with small, indistinct, elongate median impression and modified apex: relatively large, swollen, more or less rounded; left lobe of ventral sclerite with its sclerotised area long, rounded apically, shorter than right ventral and dorsal lobes and more than 2/3 of length of left dorsal lobe. Paramere with setae not divided into distal and proximal; more distally situated setae denser than more proximal ones (Fig. 71 View Figure 71 ).

Female: Unknown.

Affinities.

In general shape of median lobe, especially in shape of the sclerotised area of left ventral lobe and in shape of the lateral crest of the left dorsal lobe, the species is similar to A. fakfak sp. nov., A. testegensis sp. nov., and A. manokwariensis sp. nov. The species can be distinguished from them by 11+1 elytral striae and shape of the median lobe sclerites.

Etymology.

The species is named after Wanggar. The name is an adjective in the nominative singular.

Distribution.

New Guinean endemic. Indonesia: Papua Province: Nabire Regency. The species is known only from its type locality (Fig. 84 View Figure 84 ).

Habitat.

The species was collected in a shallow (20 cm water depth), partly shaded, larger rest pool of an intermittent stream. The pool was rich in rotten leaves and twigs (Fig. 88 View Figures 87, 88 ).