Exocelina wondiwoiensis

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This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see page history). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions. If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly. This page should be cited as follows (rationale): Shaverdo H, Surbakti S, Hendrich L, Balke M (2012) Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae). ZooKeys 250 : 1–76, doi. Versioned wiki page: 2012-12-13, version 28932, https://species-id.net/w/index.php?title=Exocelina_wondiwoiensis&oldid=28932 , contributors (alphabetical order): Pensoft Publishers. Citation formats to copy and paste BibTeX: @article{Shaverdo2012ZooKeys250, author = {Shaverdo, Helena V. AND Surbakti, Suriani AND Hendrich, Lars AND Balke, Michael}, journal = {ZooKeys}, publisher = {Pensoft Publishers}, title = {Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae)}, year = {2012}, volume = {250}, issue = {}, pages = {1--76}, doi = {10.3897/zookeys.250.3715}, url = {http://www.pensoft.net/journals/zookeys/article/3715/abstract}, note = {Versioned wiki page: 2012-12-13, version 28932, https://species-id.net/w/index.php?title=Exocelina_wondiwoiensis&oldid=28932 , contributors (alphabetical order): Pensoft Publishers.} } RIS/ Endnote: TY - JOUR T1 - Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae) A1 - Shaverdo H A1 - Surbakti S A1 - Hendrich L A1 - Balke M Y1 - 2012 JF - ZooKeys JA - VL - 250 IS - UR - http://dx.doi.org/10.3897/zookeys.250.3715 SP - 1 EP - 76 PB - Pensoft Publishers M1 - Versioned wiki page: 2012-12-13, version 28932, https://species-id.net/w/index.php?title=Exocelina_wondiwoiensis&oldid=28932 , contributors (alphabetical order): Pensoft Publishers. M3 - doi:10.3897/zookeys.250.3715 Wikipedia/ Citizendium: <ref name="Shaverdo2012ZooKeys250">{{Citation | author = Shaverdo H, Surbakti S, Hendrich L, Balke M | title = Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae) | journal = ZooKeys | year = 2012 | volume = 250 | issue = | pages = 1--76 | pmid = | publisher = Pensoft Publishers | doi = 10.3897/zookeys.250.3715 | url = http://www.pensoft.net/journals/zookeys/article/3715/abstract | pmc = | accessdate = 2024-12-13 }} Versioned wiki page: 2012-12-13, version 28932, https://species-id.net/w/index.php?title=Exocelina_wondiwoiensis&oldid=28932 , contributors (alphabetical order): Pensoft Publishers.</ref> See also the citation download page at the journal.

Taxonavigation

Ordo: Coleoptera
Familia: Dytiscidae
Genus: Exocelina

Name

Exocelina wondiwoiensis Shaverdo, Hendrich & Balke sp. n. – Wikispecies link – ZooBank link – Pensoft Profile

Type locality

Indonesia: West Papua Province: Teluk Wondama Regency, Wandammen Peninsula, Wondiwoi Mts., Wasior, 2°45.94'S, 134°31.74'E.

Type material

Holotype: male “Indonesia: West Papua: Wandammen, Wasior, 4-5.I.2001, leg. A. Riedel 2?[°]45.940'S 134?[°]31.738'E” (ZSM). Paratypes: 11 males, 20 females with same label as the holotype, 2 males with additional green labels “56 DNA M Balke”, “57 DNA M Balke” (NHMW, ZSM). 4 males, 6 females “IRIAN JAYA: Kabup. Nabire Wandammen penins. Wondiwoi-Mts., 29.-30.7.1998 6h from Yeretua, 560 m leg. M. Balke (WA 9)” (NHMW). 8 males, 9 females “IRIAN JAYA: Wandammen Bay, Wondiwoi Mts. Wasior, 250-600 m, 4.I.2001 leg. A. RIEDEL” (SMNS, ZSM, NHMW).

Diagnosis

Beetle small, externally very similar to Exocelina irianensis sp. n. but darker: dark brown to piceous, with head (in some specimens only its anterior part) paler; shiny; pronotum without lateral bead; male antennomeres 3–5 distinctly enlarged; male protarsomere 4 with large, thick, evidently curved anterolateral hook; median lobe with very strong submedian constriction, distal and proximal parts equally broad, and asymmetrical apex in ventral view; paramere with shallow notch on dorsal side and subdistal part short and small, with not numerous, relatively short, thick, and flattened setae. The species is very similar to the previous one and differs from it only by the assymetrical shape of the apex of the median lobe.

Description

Size and shape: Beetle small (TL-H 3.45–3.8 mm, TL 3.8–4.25 mm, MW 1.8–2.05 mm), with oblong-oval habitus, broadest at elytral middle. Coloration: Head reddish to piceous, with reddish anterior part; pronotum reddish to piceous, with reddish sides; elytra uniformly dark brown to piceous, in paler specimens with narrow reddish-brown sutural bands; head appendages yellowish-red, legs darker, metathoracic legs to dark brown (Fig. 39).
Surface sculpture: Dorsal punctation as in Exocelina irianensis sp. n. but slightly coarser, especially on head. Head, pronotum, and elytra with weakly impressed microreticulation, dorsal surface, thus, shiny. Head with microreticulation stronger. Metaventrite and metacoxa distinctly microreticulate, metacoxal plates with longitudinal strioles and transverse wrinkles. Abdominal sternites with distinct microreticulation, strioles, and fine sparse punctation, coarser and denser on two last abdominal sternites.
Structures: Pronotum without lateral bead, in some specimens with indistinct traces of lateral bead. Base of prosternum and neck of prosternal process with distinct ridge, without anterolateral extensions. Blade of prosternal process lanceolate, relatively broad, slightly convex, with distinct bead and few setae; neck and blade of prosternal process evenly jointed. Abdominal sternite 7 broadly truncate apically.
Male: Antennomeres 3 and 4 strongly enlarged, evidently larger than other, antennomere 5 distinctly enlarged, 6–9 robust (Fig. 13A); antennomeres 3–6 strongly and 7–9 somewhat rugose ventrally. Protarsomere 4 with large, thick, evidently curved anterolateral hook. Protarsomere 5 ventrally with anterior row of 11 short setae and posterior row with 5 short setae (Fig. 13B). Abdominal sternite 7 with 7–8 lateral striae on each side. Median lobe with very strong submedian constriction, distal and proximal parts equally broad, and asymmetrical apex in ventral view (Fig. 13C). Paramere with shallow notch on dorsal side and subdistal part short and small, with not numerous, relatively short, thick, and flattened setae (Fig. 13E).
Female: Antenna simple; traces of bead on pronotal sides are more often observed than in males; abdominal sternite 7 without striae.

Distribution

Indonesia: West Papua Province: Teluk Wondama Regency. This species is known from the Wondiwoi Mountains of Wandammen Peninsula (Fig. 50).

Etymology

The species is named for the type area, Wondiwoi Mountains. The name is an adjective in the nominative singular. Key to species of the Exocelina ekari-group The key is based mostly on the male characters. In many cases females cannot be assigned to species due to similarity of their external and internal structures (for female genitalia see Figs 17a and 17b in Shaverdo et al. (2005). Some species are rather similar in point of external morphology, therefore, in most cases the male genitalia need to be studied for reliable species identification. Numbers in brackets refer to an arrangement of the species descriptions above.

Key to species of the Exocelina ekari-group — H. Shaverdo , S. Surbakti , L. Hendrich , M. Balke

1		Pronotum with distinct lateral bead, broad or narrow    2
–		Pronotum without lateral bead or with weak traces of lateral bead    15
2		Male antennomeres simple or slightly modified: antennomere 3–7 very slightly enlarged (almost indistinctly), antennomere 3 slightly more triangular than other antennomeres    3
–		Male antennomeres 3–5 evidently enlarged    8
3		Beetle larger, TL-H: 3.9–5.0 mm, piceous    4
–		Beetle smaller, TL-H: 3.35–4.1 mm, reddish-brown to piceous    5
4		Beetle larger, TL-H: 4.8–5.0 mm (Fig. 24), male protarsomere 4 with large, thick, strongly curved anterolateral hook, apex of median lobe pointed and curved downwards in lateral view (Figs 10, 15a in Shaverdo et al. (2005)    (17) Exocelina munaso
–		Beetle smaller, TL-H: 3.9–4.1 mm (Fig. 25), male protarsomere 4 with middle-sized, slender, evidently curved anterolateral hook, apex of median lobe almost rounded in lateral view (Figs 9, 14a in Shaverdo et al. (2005)    (5) Exocelina atowaso
5		Beetle smaller, TL-H: 3.35–3.8 mm (Fig. 26), male antenna simple, male protarsomere 4 with large, thick, strongly curved anterolateral hook, median lobe more slender in ventral view, and paramere with strong notch on dorsal side and subdistal part short and large (Fig. 1)    (18) Exocelina oceai sp. n.
–		Beetle larger, TL-H: 3.45–4.1 mm (Figs 27–29), male antenna simple or slightly modified, male protarsomere 4 with middle-sized, evidently curved anterolateral hook, median lobe broader in ventral view, and paramere different    6
6		Beetle dorsally submatt, with distinct punctation (Fig. 27), male antennomeres simple, median lobe short and with extremely strongly discontinuous (curved, plicate) outline, paramere with shallow notch on dorsal side and subdistal part elongate, with dense, long, thin setae (Figs 37, 46, 64 in Balke (1998)    (4) Exocelina astrophallus
–		Beetle dorsally shiny, with very fine punctation (Figs 28, 29), male antennomere 3–7 very slightly enlarged, antennomere 3 slightly more triangular than other antennomeres, median lobe longer and without such a strong modification, paramere with notch on dorsal side and subdistal part short and small, with less numerous, shorter, thick, and flattened setae (Figs 2, 3)    7
7		Beetle smaller, TL-H: 3.45–3.7 mm, MW: 1.8–2.0 mm (Fig. 28), apex of median lobe elongate in lateral view (Fig. 2D)    (24) Exocelina waigeoensis sp. n.
–		Beetle larger, TL-H: 3.75–4.1 mm, MW: 1.9–2.2 mm (Fig. 29), apex of median lobe truncate in lateral view (Fig. 3D)    (12) Exocelina evelyncheesmanae sp. n.
8		Male antennomeres 3–5 enlarged, rounded, almost equally in size and shape    9
–		Male antennomeres 3 or 3–4 distinctly more modified in shape (triangular) and larger than other antennomeres    11
9		Male antennomeres 3–5 strongly enlarged (Fig. 4A), beetle dorsally piceous (Fig. 30), male sternite 7 slightly to distinctly concave apically, median lobe with very strong median constriction and proximal part very broad in ventral view, apex of median lobe pointed and strongly curved downwards in lateral view, subdistal part of paramere with numerous, dense, long setae (Figs 4C–F)    (9) Exocelina edeltraudae sp. n.
–		Male antennomeres 3–5 evidently less enlarged (Figs 5A, 6A), beetle dorsally ferrugineous to dark brown, male sternite 7 slightly truncate apically, median lobe with weaker median constriction in ventral view, apex of median lobe different, subdistal part of paramere with less numerous setae    10
10		Beetle dorsally brightly ferrugineous to castaneous, submatt, with punctation coarse and dense (Fig. 31), apex of median lobe broader in ventral view, paramere with shallow notch on dorsal side (Figs 5C, E)    (13) Exocelina hansferyi sp. n.
–		Beetle dorsally dark brown, almost shiny, with punctation less coarse and dense (Fig. 32), apex of median lobe narrower in ventral view, paramere with distinct notch on dorsal side (Figs 6C, E)    (8) Exocelina bundiensis sp. n.
11		Male antennomere 3 much larger than other antennomeres, triangular (Fig. 7A), beetle larger, TL-H: 4.5–4.8 mm, MW: 2.35–2.55 mm, dark brown to blackish brown (Fig. 33), male protarsomere 4 with anterolateral hook very small (smaller than more laterally situated large seta), thin, and slightly curved, median lobe with very weak median constriction in ventral view and apex almost rounded in lateral view, paramere distinctly longer than median lobe, without notch on dorsal side, with relatively short, sparse, thin setae (Figs 7B–E)    (16) Exocelina knoepfchen sp. n.
–		Male antennomeres 3 and 4 much larger than other antennomeres, triangular, beetle smaller, TL-H: 3.7–4.3 mm, MW: 2.05–2.3 mm, of different color, male protarsomere 4 with anterolateral hook thin or thick, slightly curved but larger than more laterally situated large seta, median lobe with stronger median constriction in ventral view and apex different, paramere equal or shorter than median lobe, with notch on dorsal side, setae of subdistal part not numerous, relatively short, thick, and flattened    12
12		Male antennomeres 3 and 4 more strongly elongated, more equal in size and shape (Fig. 8A), elytral punctation fine, coloration dark brown to piceous (Fig. 34), apex of median lobe almost truncate in lateral view, paramere narrower (Figs 8D, E)    (1) Exocelina alexanderi sp. n.
–		Male antennomeres 3 and 4 less elongated, antennomere 3 larger than 4, coloration and elytral punctation different, median lobe with apex elongate in lateral view, paramere broader    13
13		Beetle dorsally ferrugineous, submatt, with coarse punctuation (Fig. 35), male protarsomere 4 with anterolateral hook thin (Fig. 9B), median lobe and paramere as in Figs 9C–E    (2) Exocelina anggiensis sp. n.
–		Beetle dorsally brown to piceous, shiny, with distinctly finer punctation, male protarsomere 4 with anterolateral hook thin or thick, median lobe and paramere different    14
14		Beetle dorsally piceous, with elytral punctation fine but distinct (Fig. 36), male protarsomere 4 with thick anterolateral hook (Fig. 10B), median lobe and paramere as in Figs 10C–E    (3) Exocelina arfakensis sp. n.
–		Beetle dorsally brown, with elytral punctation almost invisible (Fig. 37), male protarsomere 4 with thin anterolateral hook (Fig. 11B), median lobe and paramere as in Figs 11C–E    (19) Exocelina polita
15		Male antennomeres 3 and 4 strongly enlarged, 5 less enlarged, and 2, 6–9 slightly enlarged    16
–		Male antennomeres simple or antennomeres 3–10 slightly enlarged (stout)    17
16		Beetle reddish-brown to brown (Fig. 38), male antenna and protarsomeres 4–5 as in Figs 12A, B, apex of median lobe symmetrical in ventral view (Fig. 12C) and paramere as in Fig. 12E    (14) Exocelina irianensis sp. n.
–		Beetle dark brown to piceous (Fig. 39), male antenna and protarsomeres 4–5 as in Figs 13A, B, apex of median lobe asymmetrical in ventral view (Fig. 13C) and paramere as in Fig. 13E    (26) Exocelina wondiwoiensis sp. n.
17		Sternite 7 slightly or strongly concave apically, median lobe long, with very weak submedian constriction and narrow apex in ventral view, paramere large, with strong notch on dorsal side and subdistal part very broad, subquadrate (Figs 14C–F)    (23) Exocelina utowaensis sp. n.
–		Sternite 7 broadly rounded or truncate apically, median lobe distinctly shorter, paramere smaller, with weaker notch on dorsal side and subdistal part small and short or elongate (e.g. Figs 16E, 15E)    18
18		Apex of median lobe bifid: with small dorsal extension (Figs 15C, D)    (6) Exocelina bifida sp. n.
–		Apex of median lobe not bifid    19
19		Beetle larger, TL-H: 3.4–3.7 mm, MW: 1.75–1.95 mm (Fig. 42), apical part of median lobe very broad in ventral view and slightly flattened in lateral view, paramere with subdistal part small and short, with not numerous, relatively short, thick, and flattened setae (Figs 16C–E)    (10) Exocelina ekari sp. n.
–		Beetle smaller, TL-H: 3.0–3.5 mm, MW: 1.6–1.8 mm, apical part of median lobe narrower in ventral view and not flattened in lateral view, paramere with subdistal part small and short or elongate, setation different    20
20		Median lobe slender, especially its apical part, with very weak submedian constriction in ventral view, paramere with subdistal part small and short, with not numerous, relatively short, thick, flattened, slightly curved at apex setae (Figs 17C–E)    (25) Exocelina weylandensis sp. n.
–		Median lobe more robust, with stronger submedian constriction in ventral view, paramere with subdistal part small and short or elongate, setation different    21
21		Male protarsomere 4 with middle-sized, slender anterolateral hook (Figs 18B, 19B)    22
–		Male protarsomere 4 with large, thick, strongly curved anterolateral hook (Figs 20B, 21B, 22B, 23B)    23
22		Prosternal ridge evidently rounded and smooth, male antenna stout, median lobe with apex elongate in lateral view and submedian constriction weaker in ventral view, paramere with notch on dorsal side and subdistal part short and small, with large brush of thick, somewhat flattend, long, curved at apex setae (Figs 18A, C–E)    (21) Exocelina soppi sp. n.
–		Prosternal ridge anteriorly evidently less rounded and smooth, male antenna simple, median lobe with apex truncate in lateral view and submedian constriction stronger in ventral view, paramere with shallow notch on dorsal side and subdistal part elongate, with strong tuft of thicker, somewhat flattend, and strongly curved at apex setae (Figs 19A, C–E)    (20) Exocelina pseudosoppi sp. n.
23		Subdistal part of paramere with two kinds of setae: thin upper setae and thick and flattened lower setae, proximal part of paramere with sparse setae (Figs 20E, 21E)    24
–		Subdistal part of paramere only with thin setae, proximal part of paramere with dense setae (Figs 22E, 23E)    25
24		Male antennomeres 3–10 stout, median lobe shorter, its apex broader in ventral view and slightly elongate in lateral view, subdistal part of paramere with upper setae less numerous and lower setae long, thick, flattend, and curved at apex (Figs 20A, C–E)    (11) Exocelina eme sp. n.
–		Male antennomeres simple, median lobe longer, its apex narrower in ventral view and almost truncate in lateral view, subdistal part of paramere with upper setae more numerous and lower setae shorter, thicker, and flattend (Figs 21A, C–E)    (7) Exocelina brahminensis sp. n.
25		Male antennomeres simple, median lobe with apex almost truncate in lateral view and submedian constriction stronger in ventral view, paramere with setae of proximal part longer, thicker, distinctly visible (Figs 22A, C–E)    (15) Exocelina kakapupu sp. n.
–		Male antennomeres 3–10 stout, median lobe with apex elongate in lateral view and submedian constriction weaker in ventral view, paramere with setae of proximal part shorter, thiner, often hardly visible (Figs 23A, C–E)    (22) Exocelina unipo sp. n.

Original Description

• Shaverdo, H; Surbakti, S; Hendrich, L; Balke, M; 2012: Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae) ZooKeys, 250: 1-76. doi

Images

Figure 1. Exocelina oceai sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figures 2–3. 2 Exocelina waigeoensis sp. n. 3 Exocelina evelyncheesmanae sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figure 4. Exocelina edeltraudae sp. n. A male antenna B protarsomeres 4–5 in ventral view C abdominal sternite 7 D median lobe in ventral view E median lobe in lateral view F paramere in external view.  Figure 5. Exocelina hansferyi sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figure 6. Exocelina bundiensis sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figure 7. Exocelina knoepfchen sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figure 8. Exocelina alexanderi sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figure 9. Exocelina anggiensis sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figure 10. Exocelina arfakensis sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figure 11. Exocelina polita (Sharp, 1882) A male antenna (without antennomeres 1, 2) B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figures 12–13. 12 Exocelina irianensis sp. n. 13 Exocelina wondiwoiensis sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figure 14. Exocelina utowaensis sp. n. A male antenna B protarsomeres 4–5 in ventral view C abdominal sternite 7 D median lobe in ventral view E median lobe in lateral view F paramere in external view.  Figure 15. Exocelina bifida sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figures 16–17. 16 Exocelina ekari sp. n. 17 Exocelina weylandensis sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figures 18–19. 18 Exocelina soppi sp. n. 19 Exocelina pseudosoppi sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figures 20–21. 20 Exocelina eme sp. n. 21 Exocelina brahminensis sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figures 22–23. 22 Exocelina kakapupu sp. n. 23 Exocelina unipo sp. n. A male antenna B protarsomeres 4–5 in ventral view C median lobe in ventral view D median lobe in lateral view E paramere in external view.  Figures 24–27. Habitus and coloration. 24 Exocelina munaso (Shaverdo, Sagata & Balke, 2005) 25 Exocelina atowaso (Shaverdo, Sagata & Balke, 2005) 26 Exocelina oceai sp. n. 27 Exocelina astrophallus (Balke, 1998).  Figures 28–31. Habitus and coloration. 28 Exocelina waigeoensis sp. n. 29 Exocelina evelyncheesmanae sp. n. 30 Exocelina edeltraudae sp. n. 31 Exocelina hansferyi sp. n.  Figures 32–35. Habitus and coloration. 32 Exocelina bundiensis sp. n. 33 Exocelina knoepfchen sp. n. 34 Exocelina alexanderi sp. n. 35 Exocelina anggiensis sp. n.  Figures 36–39. Habitus and coloration.36 Exocelina arfakensis sp. n. 37 Exocelina polita (Sharp, 1882) 38 Exocelina irianensis sp. n. 39 Exocelina wondiwoiensis sp. n.  Figures 40–43. Habitus and coloration. 40 Exocelina utowaensis sp. n. 41 Exocelina bifida sp. n. 42 Exocelina ekari sp. n. 43 Exocelina weylandensis sp. n.  Figure 50. Map of New Guinea showing distribution of the species of the Exocelina ekari-group.