Austrelatus gen. nov., a new genus of Australasian diving beetles (Coleoptera, Dytiscidae, Copelatinae), with the discovery of 31 new species from New Guinea
Author
Shaverdo, Helena
https://orcid.org/0000-0001-5034-7342
Naturhistorisches Museum Wien, Burgring 7, 1010, Vienna, Austria
shaverdo@mail.ru
Author
Hajek, Jiri
https://orcid.org/0000-0001-5779-1542
Department of Entomology, National Museum, Cirkusova 1740, CZ- 193 00 Praha 9 - Horni Pocernice, Czech Republic
Author
Hendrich, Lars
https://orcid.org/0000-0001-8366-0749
SNSB-Zoologische Staatssammlung Muenchen, Muenchhausenstrasse 21, D- 81247, Munich, Germany & GeoBioCenter, Ludwig-Maximilians-University, Munich, Germany
Author
Surbakti, Suriani
https://orcid.org/0000-0003-3984-2187
Department of Biology, Universitas Cendrawasih, Jayapura, Papua, Indonesia
Author
Panjaitan, Rawati
Department of Biology, Faculty of Sciences and Mathematics, State University of Papua (UNIPA), Jalan Gunung Salju Amban, Manokwari 98314, West Papua, Indonesia
Author
Balke, Michael
https://orcid.org/0000-0002-3773-6586
SNSB-Zoologische Staatssammlung Muenchen, Muenchhausenstrasse 21, D- 81247, Munich, Germany & GeoBioCenter, Ludwig-Maximilians-University, Munich, Germany
text
ZooKeys
2023
2023-07-19
1170
1
164
http://dx.doi.org/10.3897/zookeys.1170.103834
journal article
http://dx.doi.org/10.3897/zookeys.1170.103834
1313-2970-1170-1
17F0C88A2F0B414AAA7C8B0AB89B6E6E
AB30D9571F635294A0C3C7126F1CAF36
32.
Austrelatus wanggarensis
sp. nov.
Figs 67
, 71
, 84
, 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
).
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
).
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
).
Head without strioles, with rather dense punctation (spaces between punctures 1-3
x
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
).
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
).
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
).
Figures 14-17.
Habitus and colouration of
14
Austrelatus adelbert
(
Megna et al., 2017
)
15
A. lembenensis
sp. nov.
16
A. nadjae
sp. nov.
17
A. pseudoneoguineensis
sp. nov.
Figure 18.
Austrelatus adelbert
(
Megna et al., 2017
), median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 19.
Austrelatus lembenensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 20.
Austrelatus nadjae
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 21.
Austrelatus pseudoneoguineensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figures 22-25.
Habitus and colouration of
22
Austrelatus febrisauri
sp. nov.
23
A. oksibilensis
sp. nov.
24
A. pseudooksibilensis
sp. nov., without elytral striae
25
A. pseudooksibilensis
sp. nov., with elytral striae.
Figure 26.
Austrelatus febrisauri
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 27.
Austrelatus oksibilensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 28.
Austrelatus pseudooksibilensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figures 29-32.
Habitus and colouration of
29
Austrelatus brazza
sp. nov., without elytral striae
30
A. brazza
sp. nov., with elytral striae
31
A. lisae
sp. nov.
32
A. bormensis
sp. nov.
Figure 33.
Austrelatus brazza
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 34.
Austrelatus lisae
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 35.
Austrelatus bormensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figures 36-39.
Habitus and colouration of
36
Austrelatus neoguineensis
(Zimmermann, 1919), lectotype
37
A. mirificus
sp. nov.
38
A. securiformis
sp. nov.
39
A. testegensis
sp. nov.
Figure 40.
Austrelatus neoguineensis
(Zimmermann, 1919), median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 41.
Austrelatus mirificus
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 42.
Austrelatus securiformis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 43.
Austrelatus testegensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figures 44-47.
Habitus and colouration of
44
Austrelatus fojaensis
sp. nov.
45
A. fakfak
sp. nov.
46
A. manokwariensis
sp. nov.
47
A. toricelli
sp. nov.
Figure 48.
Austrelatus fojaensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 49.
Austrelatus fakfak
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 50.
Austrelatus manokwariensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 51.
Austrelatus toricelli
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figures 52-55.
Habitus and colouration of
52
Austrelatus innominatus
sp. nov., with reduced elytral striae
53
A. innominatus
sp. nov., with complete elytral striae
54
A. rajaampatensis
sp. nov., with reduced elytral striae
55
A. rajaampatensis
sp. nov., with complete elytral striae.
Figure 56.
Austrelatus innominatus
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 57.
Austrelatus rajaampatensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figures 58-61.
Habitus and colouration of
58
Austrelatus baliem
sp. nov.
59
A. kaszabi
(Guignot, 1956), holotype
60
A. garainensis
sp. nov.
61
A. mimika
sp. nov.
Figure 62.
Austrelatus baliem
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 63.
Austrelatus kaszabi
(Guignot, 1956), median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 64.
Austrelatus garainensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 65.
Austrelatus mimika
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figures 66-69.
Habitus and colouration of
66
Austrelatus rouaffer
sp. nov.
67
A. wanggarensis
sp. nov.
68
A. vagauensis
sp. nov.
69
A. sandaunensis
sp. nov.
Figure 70.
Austrelatus rouaffer
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 71.
Austrelatus wanggarensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 72.
Austrelatus vagauensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 73.
Austrelatus sandaunensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figures 74-77.
Habitus and colouration of
74
Austrelatus sarmiensis
sp. nov.
75
A. rugosus
sp. nov.
76
A. debulensis
sp. nov.
77
A. moreguinensis
sp. nov.
Figure 78.
Austrelatus sarmiensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 79.
Austrelatus rugosus
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 80.
Austrelatus debulensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 81.
Austrelatus moreguinensis
sp. nov., median lobe
A
left lateral view
B
right lateral view
C
ventral view
D
left paramere in external view
E
right paramere in internal view. Scale bar: one unit - 0.1 mm (
A-C
).
Figure 82.
Map of New Guinea showing distribution of 11
Austrelatus
species.
Figure 83.
Map of New Guinea showing distribution of seven
Austrelatus
species.
Figure 84.
Map of New Guinea showing distribution of 14
Austrelatus
species.
Figures 85, 86.
Habitats of
Austrelatus baliem
sp. nov., Indonesia: Papua, Baliem valley
85
15 km NE of Wamena, Jiwika, shady forest pools
86
14 km NNE of Wamena, wetland and gardens near Jiwika, an irrigation canal. Photographs by JH.
Figures 87, 88.
Habitats of
Austrelatus
species
87
small forest pool at track Nabire-Ilaga, Km 62: type localities of
A. innominatus
sp. nov. and
A. pseudooksibilensis
sp. nov. and habitats of
A. febrisauri
sp. nov.,
A. rugosus
sp. nov., and
A. kaszabi
(Guignot, 1956)
88
partly shaded rest pool of an intermittent stream at the road Wanggar to Bali Bumi: type locality of
A. wanggarensis
sp. nov. Photographs by LH.
Figures 89, 90.
Habitats of
Austrelatus
species, Indonesia: Papua
89
Foja Mts, bog in rainforest, (PAP058): type locality of
A. fojaensis
sp. nov.
90
Rouaffer, Iratoi, forest stream, (PAP028): type locality of
A. setiphallus
sp. nov.,
A. rugosus
sp. nov. and
A. rouaffer
sp. nov. and habitat of
A. kaszabi
(Guignot, 1956). Photographs by MB.
Figures 91, 92.
Habitat of
Austrelatus
species, Indonesia: Papua, Dekai, upper Brazza, puddles or pools among rotten leaves and twigs (PAP044): type localities of
A. brazza
sp. nov. and
A. debulensis
sp. nov., and habitat of
A. nadjae
sp. nov. Photographs by MB.
Figure 93.
Habitat of
Austrelatus
species, Indonesia: Papua, S Iratoi, forest pool, (PAP042): type locality of
A. securiformis
sp. nov. and habitat of
A. rouaffer
sp. nov. and
A. nadjae
sp. nov. Photograph by MB.