Euops violaceus 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 : 17-18

Euops violaceus Pascoe

( Figs 3 , 46 , 72 , 191 , 209 , 221 )

Pascoe (1874): p. 27.

Diagnosis

Female: Coloration bright metallic blue. Apex of protibia with distinct premucro. Spermatheca with short siphon­like extension ( Fig. 209 ). Geographical distribution: South Maluku (Ceram).

Range ( Fig. 221 ) Maluku Selatan Prov. (Ceram) .

Material examined

Type material. Lectotype, female (by present designation): Maluku Selatan Prov.: Ceram Isl. ; labels: 1) [oval, blue] "Ceram [handwritten]" 2) [white, rectangular] " Euops violacea , Type, Pascoe [handwritten]" 3) [white, rectangular] "Pascoe Coll., 93­60. [printed]" 4) [white with red bordering, round] "Type [printed]" 5) [red, rectangular] LECTOTYPE, Euops violaceus Pascoe , det. A.Riedel 2000 [printed]" ( BMNH) . Paralectotype, female; labels: 1) [oval, blue] "Ceram [handwritten]" 2) [white, rectangular] "Pascoe Coll., 93­60. [printed]" 3) [white with yellow bordering, round] "Cotype [printed]" 4) [red, rectangular] PARALECTOTYPE, Euops violaceus Pascoe , det. A.Riedel 2000 [printed]" ( BMNH) .

Redescription

Lectotype, female. Length, pronotum + elytron: 3.19 mm. Coloration ( Fig. 3 ) bright metallic violet­blue; legs and abdomen deep ferruginous to black, with bluish lustre; pygidium deep ferruginous, at extreme base and apex metallic green; antenna black. Head. As in Fig. 46 . Gena 0.91 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 with shallow punctures, posteriorly transversely rugulose. Eyes in dorsal view moderately prominent, set off from lateral contour of head. Profile of vertex without constriction behind eye. Ventral surface of head in front of gular region weakly sculptured, with shallow median furrow, sparsely punctate near eye, in basal half of eye´s length with regular transverse wrinkles between eyes. Rostrum 1.72 X as long as mouthparts; at widest point 1.50 X wider than at base; in profile dorsal contour above antennal insertion with weak rounded prominence, anteriorly in straight line to apex; ventral contour weakly sinuate; ventrally on submentum with numerous long, stiff, suberect setae. Mouthparts. Prementum at base 1.7 X wider than long, ca. 2.7 X wider than at apex; with weakly bisinuate lateral margins converging apicad; apical processes subangulate, of equal length, on same level dorsoventrally. Antenna slender, as in Fig. 72 . Prothorax 0.87 X as long as wide; preapical constriction shallow; disk at middle with very shallow transverse impression; sides with dense, deep punctures. Metanotum with pair of distinct lateral lobes. Elytron 2.18 X longer than wide; striae moderately impressed. Thoracic venter. Height of pterothorax 0.84 X length of elytron. Procoxa in anterior aspect as long as wide (1.00 X). Legs. Dorsal contour of profemur sinuate, in basal third straight, continuing in markedly convex line to apex. Protibia straight; ventral contour sinuate; ventral surface at middle crenulate, setose with suberect setae; tibial apex with uncus and minute premucro; premucro in ventral position. Abdomen. Setose patch of venter 1.40 X as long as wide, consisting of 3 double rows of modified setae. Pygidium 1.06 X wider than long; shining, at extreme base microreticulate; sparsely punctate with shallow punctures. Genitalia. Sternite VIII as in Fig. 191 . Tergite VIII not examined. Spermatheca as in Fig. 209 ; basally with short siphon­like extension; slender; subisodiametric from insertion with gland to shortly before apex. Length of ductus spermathecae not examined.

Nomenclatural note

In the original description of E. violaceus Pascoe (1874) did not fix a holotype; no illustrations of a selected specimen was given. Two syntypes have been examined. The designation of a lectotype is necessary to ensure stability of nomenclature in case more 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 46–55. Head of Euops (Metaeuops) spp., in lateral aspect; females: (46) E. violaceus, lectotype; (47) E. coelestinus, lectotype; (48) E. ruficornis, lectotype; (49) E. ratcliffei, holotype; (50) E. dintelmanni, allotype; (51) E. tenuiflagellaris, allotype; (52) E. curvipes, allotype; (53) E. illegalovi, allotype; (54) E. piceus, allotype; (55) E. paratibialis (Emdoman). 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 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.