Euops swartensis, Riedel, 2006

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 : 21-23

Euops swartensis sp. n.

( Figs 5 , 31 , 63 , 104 , 124 , 144 , 152 , 176 , 192 , 207 , 221 )

Diagnosis

Coloration largely deep metallic blue. Elytral striae weakly impressed. Male: Aedeagus with area of long, thin, centripetally directed setae between endophallic sclerites. TA ( Fig. 104 ) with sides of frame subparallel, subapically about as wide as at base, transfer­processes apically mandibuliform. Female: Spermatheca with long siphonlike extension ( Fig. 207 ).

Range ( Fig. 221 ) Jayawijaya Prov. (Karubaga). Elevation: 1300–1500 m.

Material examined

Holotype. WEST NEW GUINEA, Jayawijaya Prov. , Swart Valley, Karubaka, 1450 m, 5.XI.1958, leg. J.L.Gressitt ( BPBM) . Paratypes. WEST NEW GUINEA, Jayawijaya Prov .: 1 female, same data as holotype ( BPBM) ; 1 female, Swart Valley , Karubaka, 1450 m, 17.XI.1958, leg. J.L.Gressitt ( BPBM) ; 1 male, Swart Valley , Karubaka, 1500 m, 11.XI.1958, leg. J.L.Gressitt ( BPBM) ; 1 female (marked as “ allotype ”), Swart Valley , Karubaka, 1300 m, 7.XI.1958, leg. J.L.Gressitt ( BPBM) .

Description

Holotype, male. Length, pronotum + elytron: 3.25 mm. Coloration ( Fig. 5 ) largely metallic blue; dorsal surface of head, scutellum and ventral side of body rather greenishblue; forelegs dark ferruginous with slight bluish lustre; antenna black. Head. As in Fig. 31 . Gena 1.01 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 with minute punctures, 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 markedly sculptured; with shallow median furrow, transversely to obliquely rugose, punctures interspersed between wrinkles. Rostrum 1.46 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 subangulate with head (ca. 140°), concave to hind level of maxillary cavities, in straight line to apex; ventrally on submentum with numerous long, stiff, suberect setae. Mouthparts. Prementum at base 1.9 X wider than long, ca. 2.6 X wider than at apex; with weakly bisinuate lateral margins converging apicad; apical processes subangulate, of equal length, median process protruding slightly more ventrad than lateral processes. Antenna slender, as in Fig. 63 . Prothorax 0.96 X as long as wide; preapical constriction shallow; disc evenly convex, shining, impunctate; sides with moderately deep punctures becoming smaller dorsad. Metanotum with pair of indistinct lateral lobes. Elytron 2.47 X longer than wide; striae weakly impressed. Thoracic venter. Height of pterothorax 0.74 X length of elytron. Procoxa in anterior aspect 1.23 X as long as wide. Legs. Profemur subsymmetrically clavate, moderately swollen, thickest at 0.32 of length from apex, at base with indistinct stalk. Protibia evenly weakly curved ventrad; ventral contour slightly sinuate, subparallel to dorsal contour. Mesotibia dorsally before apex with subangulate lobe, its apical edge leading obliquely towards uncus; overall shape of tibia subtriangular. Mesotarsus straight, 2.9 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 sternites IV–V each with double patch of erect setae, at middle with subglabrous longitudinal band; sternite III and sternite VI with sparse subrecumbent setae; sternite VI with median swelling in front of posterior margin. Pygidium 1.04 X wider than long; at extreme base microreticulate, remainder shining; sparsely punctate with shallow punctures. Genitalia. Apex of tergite VIII curved in evenly convex line. Sternite VIII as in Fig. 176 . Tegminal plate ( Fig. 124 ) with sides weakly converging apicad; apical edge subtruncate, densely setose with moderately long setae. Aedeagus. Apical scoop of pedon ( Fig. 152 ) ca. 1.22 X as long as wide, evenly rounded to apex, spoon­shaped. Tectum as in Fig. 144 ; lateral frame converging with straight sides to narrow apex; subapically with lateral arms. TA as in Fig. 104 ; frame with subparallel sides, subapically about as wide as at base; transfer processes basally articulated inside of frame of TA, apically projecting beyond frame´s apex, in dorsal aspect mandibuliform; base of transfer processes at about middle of frame; without distinct dorsal plate; internal support structures of ductus ejaculatorius long, but not reaching level of basal sclerites; basal sclerites ca. 0.30 X of total length of TA. Cuticle of endophallus in apical 0.47 (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 113–115, 117 ).

Allotype, female. Same as holotype except: length, pronotum + elytron: 3.10 mm. Head. Gena 0.90 X as long as width of head immediately behind eyes. Profile of vertex without constriction behind eye. Rostrum 1.58 X as long as mouthparts; at widest point 1.37 X wider than at base. Prothorax 0.95 X as long as wide. Disk at middle with very shallow transverse impression. Elytron 2.43 X longer than wide. Thoracic venter. Height of pterothorax 0.79 X length of elytron. Procoxa in anterior aspect 1.23 X as long as wide. Legs. Dorsal contour of profemur sinuate, in basal third straight, continuing in markedly convex line to apex. Protibia straight; ventral contour sinuate, basal half convex, apical half concave; ventral surface denticulate, densely setose with suberect setae; tibial apex with uncus and minute premucro; premucro in ventral position. Abdomen. Setose patch of venter 1.20 X as long as wide, consisting of 3 double rows of modified setae. Pygidium 1.07 X wider than long. Genitalia. Sternite VIII as in Fig. 192 . Tergite VIII apically subtruncate. Spermatheca as in Fig. 207 ; basally with long siphon­like extension; slender; subisodiametric from insertion with gland to shortly before apex. Ductus spermathecae of the specimen lost.

Intraspecific variation

Length, pronotum + elytron: 3.10–3.30 mm (n=5, =3.18 ± 0.09). Prothorax 0.95– 0.98 X as long as wide in males (n=2, =0.96), 0.93–0.95 X as long as wide in females (n=3, =0.94 ± 0.01). Elytron 2.39–2.47 X longer than wide in males (n=2, =2.43), 2.37–2.43 X longer than wide in females (n=3, =2.41 ± 0.03). Thoracic venter. Height of pterothorax 0.74 X length of elytron in males (n=2), 0.79–0.81 X length of elytron in females (n=3, =0.80 ± 0.01). Abdomen. Pygidium 1.00–1.04 X wider than long in males (n=2, =1.02), 1.04–1.07 X wider than long in females (n=3, =1.05 ± 0.02). Female patch of modified setae 1.08–1.34 X as long as wide (n=3, =1.21 ± 0.13).

Etymological note This epithet is based on the type locality, the region of the Swart River Valley.

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 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 102–105. Male genitalia of Euops (Metaeuops) spp.; transfer apparatus of aedeagus in dorsal aspect (left) and lateral aspect (right); (102) E. oops, holotype; (103) E. torricelliensis, holotype; (104) E. swartensis, holotype; (105) E. illegalovi, 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 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 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 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 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.

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

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.