Euops coelestinus Pascoe

Riedel, Alexander, 2006, Revision of the subgenus Metaeuops Legalov of Euops Schoenherr (Coleoptera, Curculionoidea, Attelabidae) from the Papuan region, Zootaxa 1181 (1), pp. 1-102 : 13-17

Euops coelestinus Pascoe

( Figs 1–2 , 34 , 42–43, 47, 69, 73, 76, 79–80, 83, 84, 98–101, 130, 143, 150, 170, 188–190,

204–206, 220)

Pascoe (1874): p. 27.

Diagnosis

Coloration bright metallic blue. Male: Aedeagus with area of long, thin, centripetally directed setae between endophallic sclerites. TA ( Figs 98–101 ) with lyriform frame, widest in basal half; transfer processes apically diverging laterad. Female: Disk at middle with distinct, transverse impression.

Range ( Fig. 220 )

Manokwari Prov. ( Manokwari , Arfak , Mts., Ransiki , Wandammen Bay ), Japen­ Waropen Prov. ( Serui ), Paniai Prov. ( Topo , Epomani). Elevation: 300–700 m.

Material examined

Type material. Lectotype, female (by present designation): WEST NEW GUINEA: Manokwari Prov. , Manokwari; labels: 1) [oval, blue] "Dorey [handwritten]" 2) [white, rectangular] " Euops coelestis , Type, Pascoe [handwritten]" 3) [white with red bordering, round] "Type [printed]" 4) [white with black bordering, rectangular] " Euops coelestis Pasc. [handwritten]" 5) [white, rectangular] "Pascoe Coll., 93–60. [printed]" 6) [white, rectangular] "internally damaged by mites [handwritten / label added by present author after dissecting the specimen]" 7) [red, rectangular] LECTOTYPE, Euops coelestinus Pascoe , det. A.Riedel 2000 [printed]" ( BMNH) .

Other material examined: WEST NEW GUINEA, Manokwari Prov.: 1 female, “Hatam” [today Mokwam , a village located in the Arfak Mts.], 1875, leg. Beccari [this specimen is referred to in Pascoe (1885)] ( MCDG) ; 1 male (marked “selected male specimen”), 1 female, Ransiki , Mayuby, ca. 300 m, 26–30.IX.1990, leg. A.Riedel ( ARC) ; 1 female, Ransiki ­ Anggi , 250–750 m, 25.VIII.1991, leg. A.Riedel ( ARC) ; 2 males, 3 females, Wandammen Bay , Wondiwoi Mts., Wasior, 250–600 m, 4.I.2001, leg. A.Riedel ( ARC) ; 1 female, Wandammen Bay , Wondiwoi Mts., Wasior, 580–950 m, 3.I.2001, leg. A.Riedel ( ARC) ; 1 male, Wandammen Bay , Wondiwoi Mts., Wasior, 300–850 m, 5.I.2001, leg. A.Riedel ( ARC) ; 3 males, 2 females, Wandammen Bay , Wondiwoi Mts., Wasior, 300–700 m, 14.I.2001, leg. A.Riedel ( ARC) ; 1 male, Wandammen Bay , Wondiwoi Mts., Wasior, 250–600 m, 15.I.2001, leg. A.Riedel ( ARC) ; Japen­Waropen Prov.: 2 males, 1 female, Japen Isl. , Serui , Kontiunai, road to Ambaidiru, 600–700 m, 23.XII.2000, leg. A.Riedel ( ARC) ; 1 male, 2 females, Japen Isl. , Serui , Kontiunai, road to Ambaidiru, 600– 700 m, 25.XII.2000, leg. A.Riedel ( ARC) ; Paniai Prov.: 1 male, 1 female, Nabire , Topo, Km 54, 31.VIII.1996, secondary vegetation, leg. Stüben / Schüle ( PSC) ; 1 male, Epomani , Km 145, 550– 750 m, 15–16.I.1996, leg. A.Riedel ( ARC) ; 1 male, 1 female, Epomani , Km 165, 700– 800 m, 17.I.1996, leg. A.Riedel ( ARC) .

Redescription

Selected male specimen (Ransiki). Length, pronotum + elytron: 2.97 mm. Coloration (as Fig. 1 ) bright metallic blue; head and prothorax greenish blue; scutellum with greenish­golden lustre; legs and abdomen black with slight bluish lustre, anterior surface of meso­ and metafemur with more distinct greenish lustre; antenna black. Head. As in Figs 34 , 42. Gena 0.98 X as long as width of head immediately behind eyes. Contours of genae in dorsal view markedly converging anteriad. Vertex dorsally subglabrous; laterally behind eye sparsely punctate, posteriorly transversely rugulose. Eyes in dorsal view moderately prominent, set off from lateral contour of head. Profile of vertex with marked constriction immediately behind eye. Ventral surface of head in front of gular region weakly sculptured; with shallow median furrow, with sparse minute punctures, posteriorly with shallow transverse wrinkles. Rostrum 1.95 X as long as mouthparts; at widest point 1.45 X wider than at base; in profile dorsal contour above antennal insertion with weak rounded prominence, anteriorly in sinuate line to apex; ventral contour continuous with head, in sinuate line to apex; ventrally on submentum with numerous long, stiff, suberect setae. Mouthparts. Prementum at base 1.6 X wider than long, ca. 2.3 X wider than at apex; with almost straight lateral margins converging apicad, at base of lateral apical process with shallow constriction; apical processes subangulate, subequal in length; median process slightly shorter, dorsoventrally on same level as lateral processes. Antenna slender, as in Fig. 69 . Prothorax 0.96 X as long as wide; preapical constriction shallow; disc evenly convex, shining, impunctate; sides with dense, deep punctures. Metanotum with pair of distinct lateral lobes. Elytron 2.41 X longer than wide; striae moderately impressed. Thoracic venter. Height of pterothorax 0.76 X length of elytron. Procoxa in anterior aspect 1.26 X as long as wide. Legs. Profemur ( Fig. 73 ) subsymmetrically clavate, moderately swollen, thickest at 0.32 of length from apex, at base with indistinct stalk. Protibia in basal half straight, in apical half weakly curved ventrad; ventral contour slightly sinuate, subparallel to dorsal contour. Mesotibia ( Fig. 76 ) dorsally before apex with subangulate lobe, its apical edge leading obliquely towards uncus; overall shape of tibia subtriangular. Mesotarsus ( Fig. 83 ) straight, 2.8 X as long as wide. Metatibia of similar size as mesotibia. Abdomen. Ventral contour anteriorly weakly concave in lateral view, sternite VI projecting bluntly angulate, with marked constriction between sternite VI and VII. Ventral surface of sternite III subglabrous, sternites IV–V each with double patch of sparse erect setae, at middle with subglabrous longitudinal band; sternite VI sparsely setose with subrecumbent setae; sternite VI with median swelling in front of posterior margin. Pygidium 1.08 X wider than long; at extreme base microreticulate, remainder shining; sparsely punctate with moderately deep punctures. Genitalia. Apex of tergite VIII curved in evenly convex line. Sternite VIII as in Fig. 170 . Tegminal plate ( Fig. 130 ) with sides weakly converging apicad; apical edge broad, subtruncate, densely setose with moderately long setae. Aedeagus. Apical scoop of pedon ( Fig. 150 ) ca. 1.24 X as long as wide, evenly rounded to apex, spoon­shaped. Tectum as in Fig. 143 ; lateral frame converging with straight sides to pointed apex; subapically with angulate lateral extensions. TA as in Fig. 98 ; frame lyriform, widest in basal half; transfer processes basally articulated inside of frame of TA, apically projecting beyond frame´s apex, diverging laterad; base of transfer processes within apical half of frame; without distinct dorsal plate; internal support structures of ductus ejaculatorius long, but not reaching level of basal sclerites; basal sclerites ca. 0.36 X of total length of TA. Cuticle of endophallus in apical 0.57 (of total length of aedeagus) with dense, subtriangular denticles; in mid portion with pair of elongate sclerites; between these sclerites with area of long, thin, centripetally directed setae (similar as in Figs 84 , 113–115, 117 ).

Lectotype, female. Same as described male except: length, pronotum + elytron: 3.18 mm. Head. As in Figs 43, 47. Gena 0.85 X as long as width of head immediately behind eyes. Profile of vertex without constriction behind eye. Rostrum 1.50 X as long as mouthparts; at widest point 1.46 X wider than at base. Prothorax 0.88 X as long as wide. Disk at middle with distinct transverse impression. Elytron 2.31 X longer than wide. Thoracic venter. Height of pterothorax 0.80 X length of elytron. Procoxa in anterior aspect 1.09 X as long as wide. Legs. Dorsal contour of profemur sinuate, in basal third straight, continuing in markedly convex line to apex (as in Fig. 80 ). Protibia straight; ventral contour sinuate, basal half convex, apical half concave; ventral surface weakly crenulate, setose with suberect setae; tibial apex [ventral angle of left tibia broken] with uncus and minute premucro; premucro in ventral position. Abdomen. Setose patch of venter 1.13 X as long as wide; sternite III–V each bearing 1 double row of modified setae. Pygidium 1.19 X wider than long. Genitalia (as in Fig. 188 ). Sternite VIII as in Fig. 190 . Tergite VIII apically rounded. Spermatheca as in Fig. 204 ; basally with long siphon­like extension; slender; subisodiametric from insertion with gland to shortly before apex. Length of ductus spermathecae plus spermatheca 2.5 X as long as tergite VIII.

Intraspecific variation

Coloration. Elytra usually bright metallic blue; in teneral specimens rather metallic violet. Length, pronotum + elytron: males 2.59–3.30 mm (n=14, =3.03 ± 0.18); females 2.75–3.43 mm (n=12, =3.04 ± 0.16). Prothorax 0.92–1.00 X as long as wide in males (n=14, =0.96 ± 0.02), 0.86–0.94 X as long as wide in females (n=12, =0.91 ± 0.03). Elytron 2.31–2.50 X longer than wide in males (n=14, =2.39 ± 0.06), 2.30–2.39 X longer than wide in females (n=12, =2.34 ± 0.03). Thoracic venter. Height of pterothorax 0.73–0.78 X length of elytron in males (n=14, =0.75 ± 0.02), 0.78–0.83 X length of elytron in females (n=12, =0.81 ± 0.02). Abdomen. Pygidium 0.95–1.08 X wider than long in males (n=11, =1.00 ± 0.04), 1.03–1.19 X wider than long in females (n=10, =1.11 ± 0.05). Female patch of modified setae 0.94–1.28 X as long as wide (n=11, =1.12 ± 0.09). Male genitalia. In ventral aspect apical processes of TA differing: in specimens from the Arfak mountains ( Fig. 98 ) short, relatively broad but not markedly broadened at apex, weakly diverging; in specimens from Wandammen Bay ( Fig. 99 ) short, apically markedly broadened, subtruncate, weakly diverging; in specimens from Japen ( Fig. 101 ) long, constantly slender towards apex, distinctly diverging laterad; in specimens from Epomani ( Fig. 100 ) moderately long, moderately slender, weakly broadened apically, weakly diverging laterad. Female genitalia. Sternite VIII apically ill­defined and with few setae ( Fig. 190 ), or better defined and with more setae ( Fig. 189 ). Spermatheca as in Figs 204–206 ; more or less slender; siphon­like extension as in lectotype ( Fig. 204 ) or longer as in female from Wasior ( Fig. 206 ).

Nomenclatural note

In the original description of E. coelestinus Pascoe (1874) described male and female characters. He did not designate a holotype and no illustrations of a selected specimen were given. One syntype could be examined. The designation of a lectotype is necessary to ensure stability of nomenclature in case other syntypes are discovered that belong to different species.

Figures

FIGURES 1–9. Habitus of Euops (Metaeuops) spp.: (1) E. coelestinus, male (Japen Isl.); (2) E. coelestinus, female lectotype; (3) E. violaceus, female lectotype; (4) E. illegalovi, holotype; (5) E. swartensis, holotype; (6) E. oops, holotype; (7) E. tenuiflagellaris, holotype; (8) E. judithae, holotype; (9) E. coeruleus, holotype. Scale lines 1 mm.

FIGURES 26–35. Head of Euops (Metaeuops) spp., in lateral aspect; males: (26) E. ratcliffei, holotype; (27) E. arfakensis, holotype; (28) E. illegalovi, holotype; (29) E. biru, holotype; (30) E. oops, holotype; (31) E. swartensis, holotype; (32) E. judithae, holotype; (33) E. dintelmanni, holotype; (34) E. coelestinus (Ransiki); (35) E. ruficornis (Wau). Scale lines 500 µm.

FIGURES 98–101. Male genitalia of Euops (Metaeuops) coelestinus, different geographical forms; transfer apparatus of aedeagus in dorsal aspect (left) and lateral apect (right); (98) (Arfak Mts., Membey); (99) (Wandammen bay, Wasior); (100) (Epomani); (101) (Japen Isl.). Scale lines 100 µm.

FIGURES 220–222. Distribution of Euops (Metaeuops) spp. Areas above 1000 m are shaded.

FIGURES 56–72. Antenna of Euops (Metaeuops) spp.: (56) E. torricelliensis, holotype; (57) E. oops, holotype; (58) E. arfakensis, holotype; (59) E. biru, holotype; (60) E. illegalovi, holotype; (61) E. tenuiflagellaris, holotype; (62) E. judithae, holotype; (63) E. swartensis, holotype; (64) E. coeruleus, holotype; (65) E. dintelmanni, holotype; (66) E. piceus, holotype; (67) E. curvipes, holotype; (68) E. ratcliffei, holotype; (69) E. coelestinus (Ransiki); (70) E. ruficornis, lectotype; (71) E. paratibialis, holotype; (72) E. violaceus, lectotype. Scale lines 200 µm.

FIGURES 73–75. Foreleg of male Euops (Metaeuops) spp.: (73) E. coelestinus (Wasior); (74) E. curvipes, paratype (Angguruk); (75) E. paratibialis, holotype. Scale lines 500 µm.

FIGURES 76–80. Mesotibia of Euops (Metaeuops) spp.: (76) E. coelestinus, male (Wasior); (77) E. curvipes, paratype, male (Angguruk); (78) E. paratibialis, holotype; (79) E. coelestinus, female (Wasior); (80) Foreleg of female Euops coelestinus (Wasior). Scale lines 200 µm.

FIGURES 81–83. Mesotarsus of Euops (Metaeuops) spp., males: (81) E. tibialis (Ransiki Anggi); (82) E. paratibialis, holotype; (83) E. coelestinus (Epomani). Scale lines 200 µm. Arrow: note shape of first tarsomere.

FIGURES 170–186. Male sternite VIII of Euops (Metaeuops) spp.; (170) E. coelestinus (Ransiki); (171) E. torricelliensis, holotype; (172) E. oops, holotype; (173) E. illegalovi, holotype; (174) E. tenuiflagellaris, holotype; (175) E. judithae, holotype; (176) E. swartensis, holotype; (177) E. ratcliffei, holotype; (178) E. arfakensis, holotype; (179) E. curvipes, holotype; (180) E. dintelmanni, holotype; (181) E. coeruleus, holotype; (182) E. ruficornis (Wau); (183) E. biru, holotype; (184) E. piceus, holotype; (185) E. tibialis, lectotype; (186) E. paratibialis, holotype. Scale lines 100 µm.

FIGURES 119–130. Male genitalia of Euops (Metaeuops) spp.; dorsal plate of tegmen in dorsal aspect; (119) E. coeruleus, holotype; (120) E. torricelliensis, holotype; (121) E. illegalovi, holotype; (122) E. ruficornis (Wau); (123) E. oops, holotype; (124) E. swartensis, holotype; (125) E. dintelmanni, holotype; (126) E. biru, holotype; (127) E. arfakensis, holotype; (128) E. curvipes, holotype; (129) E. ratcliffei, holotype; (130) E. coelestinus (Ransiki). Scale lines 100 µm.

FIGURES 148–159. Male genitalia of Euops (Metaeuops) spp.; pedon of aedeagus in ventral aspect; (148) E. arfakensis, holotype; (149) E. torricelliensis, holotype; (150) E. coelestinus (Ransiki); (151) E. curvipes, holotype; (152) E. swartensis, holotype; (153) E. dintelmanni, holotype; (154) E. ratcliffei, holotype; (155) E. oops, holotype; (156) E. illegalovi, holotype; (157) E. coeruleus, holotype; (158) E. biru, holotype; (159) E. ruficornis (Wau). Scale lines 100 µm.

FIGURES 136–147. Male genitalia of Euops (Metaeuops) spp.; tectum of aedeagus in dorsal aspect; (136) E. torricelliensis, holotype; (137) E. dintelmanni, holotype; (138) E. biru, holotype; (139) E. curvipes, holotype; (140) E. ratcliffei, holotype; (141) E. oops, holotype; (142) E. ruficornis (Wau); (143) E. coelestinus (Ransiki); (144) E. swartensis, holotype; (145) E. illegalovi, holotype; (146) E. coeruleus, holotype; (147) E. arfakensis, holotype. Scale lines 100 µm.

FIGURES 84–86. Aedeagus of Euops (Metaeuops) spp., in dorsal aspect; (84) E. coelestinus (Wasior); (85) E. curvipes, holotype; (86) E. tenuiflagellaris, holotype. Scale lines 200 µm. A.aed. = apex of aedeagus; A.e. = apex of endophallus; B.aed. = body of aedeagus; c.s. = field of centripetal setae; e.sc. = endophallic sclerites; p = pedon; t = tectum; TA = transfer apparatus.

FIGURES 110–118. Male genitalia of Euops (Metaeuops) spp.; mid portion of endophallus with endophallic sclerites and field of centripetal setae if present; (110) E. ruficornis (Wau); (111) E. dintelmanni, holotype; (112) E. curvipes, holotype; (113) E. judithae, holotype; (114) E. illegalovi, holotype; (115) E. torricelliensis, holotype; (116) E. biru, holotype; (117) E. coeruleus, holotype; (118) E. ratcliffei, holotype. Scale lines 50 µm.

FIGURES 187–188. Female genitalia of Euops (Metaeuops) spp., in ventral aspect: (187) E. tibialis (Epomani); (188) E. coelestinus (Wasior). Scale lines 200 µm. d.s. = ductus spermathecae, od = oviduct, s = spermatheca, r = rectum, st. VIII = sternite VIII, t. VIII = tergite VIII.

FIGURES 189–202. Female sternite VIII of Euops (Metaeuops) spp.; (189) E. coelestinus (Wasior); (190) E. coelestinus lectotype; (191) E. violaceus, lectotype; (192) E. swartensis, allotype; (193) E. tenuiflagellaris, allotype; (194) E. judithae, allotype; (195) E. illegalovi, allotype; (196) E. ratcliffei, allotype; (197) E. curvipes, allotype; (198) E. ruficornis, lectotype; (199) E. dintelmanni, allotype; (200) E. biru, allotype; (201) E. piceus, allotype; (202) E. tibialis (Epomani); (203) E. paratibialis, allotype. Scale lines 100 µm.

FIGURES 204–219. Spermatheca of Euops (Metaeuops) spp.; (204) E. coelestinus, lectotype; (205) E. coelestinus (Japen Isl.); (206) E. coelestinus (Wasior); (207) E. swartensis, allotype; (208) E. illegalovi, allotype; (209) E. violaceus, lectotype; (210) E. ruficornis, lectotype; (211) E. tenuiflagellaris, allotype; (212) E. judithae, allotype; (213) E. ratcliffei, allotype; (214) E. dintelmanni, allotype; (215) E. biru, allotype; (216) E. curvipes, allotype; (217) E. piceus, allotype; (218) E. paratibialis, allotype; (219) E. tibialis (Epomani). Scale lines 100 µm.