Introduction of the Exocelina ekari-group with descriptions of 22 new species from New Guinea (Coleoptera, Dytiscidae, Copelatinae) Author Shaverdo, Helena V. Author Surbakti, Suriani Author Hendrich, Lars Author Balke, Michael text ZooKeys 2012 250 1 76 http://dx.doi.org/10.3897/zookeys.250.3715 journal article http://dx.doi.org/10.3897/zookeys.250.3715 1313-2970-250-1 26. Exocelina wondiwoiensis Shaverdo, Hendrich & Balke sp. n. Figs 13 A-E , 39 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.

Fig. 24 Shaverdo et al. (2005)	Exocelina munaso
Fig. 25 Shaverdo et al. (2005)	Exocelina atowaso
Fig. 26Fig. 1	Exocelina oceai
Figs 27-29
Fig. 27 Balke (1998)	Exocelina astrophallus
Figs 28, 29Figs 2, 3
Fig. 28Fig. 2D	Exocelina waigeoensis
Fig. 29Fig. 3D	Exocelina evelyncheesmanae
Fig. 4AFig. 30Figs 4 C-F	Exocelina edeltraudae
Figs 5A6A
Fig. 31Figs 5C, E	Exocelina hansferyi
Fig. 32Figs 6C, E	Exocelina bundiensis
Fig. 7AFig. 33Figs 7 B-E	Exocelina knoepfchen
Fig. 8AFig. 34Figs 8D, E	Exocelina alexanderi
Fig . 35Fig. 9BFigs 9 C-E	Exocelina anggiensis
Fig. 36Fig. 10BFigs 10 C-E	Exocelina arfakensis
Fig. 37Fig. 11BFigs 11 C-E	Exocelina polita
Fig. 38Figs 12A, BFig. 12CFig. 12E	Exocelina irianensis
Fig. 39Figs 13A, BFig. 13CFig. 13E	Exocelina wondiwoiensis
Figs 14 C-F	Exocelina utowaensis
Figs 16E15E
Figs 15C, D	Exocelina bifida
Fig. 42Figs 16 C-E	Exocelina ekari
Figs 17 C-E	Exocelina weylandensis
Figs 18B, 19B
Figs 20B, 21B22B, 23B
Figs 18A, C-E	Exocelina soppi
Figs 19A, C-E	Exocelina pseudosoppi
Figs 20E, 21E
Figs 22E, 23E
Figs 20A, C-E	Exocelina eme
Figs 21A, C-E	Exocelina brahminensis
Figs 22A, C-E	Exocelina kakapupu
Figs 23A, C-E	Exocelina unipo

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. Figures 44-47. Habitus and coloration. 44 Exocelina soppi sp. n. 45 Exocelina pseudosoppi sp. n. 46 Exocelina eme sp. n. 47 Exocelina brahminensis sp. n. Figures 48-49. Habitus and coloration. 48 Exocelina kakapupu sp. n. 49 Exocelina unipo sp. n. Figure 50. Map of New Guinea showing distribution of the species of the Exocelina ekari -group.