Euops torricelliensis, 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 : 26-27

Euops torricelliensis sp. n.

( Figs 39 , 56 , 103 , 115 , 120 , 136 , 149 , 171 , 222 )

Diagnosis

Male: Coloration largely metallic bluish ranging from violet­blue to greenish­blue. Aedeagus with area of long, thin, centripetally directed setae between endophallic sclerites. TA ( Fig. 103 ) relatively small; sides of frame diverging from base to ca. ¼ from apex.

Range ( Fig. 222 )

Material examined

Holotype. PAPUA NEW GUINEA, East Sepik Prov., Torricelli Mts. , Wantipi Vill., 30.XI.–8.XII.1958, leg. W.W.Brandt ( BPBM).

Description

Holotype, male. Length, pronotum + elytron: 2.63 mm. Coloration of dorsal surface violet­blue; scutellum, anterior surface of procoxa and metathorax slightly different, metallic greenish­blue; legs, mesothorax and abdomen ferruginous with slight bluishgreenish lustre; antenna black. Head. As in Fig. 39 . Gena 1.03 X as long as width of head immediately behind eyes. Contours of genae in dorsal view markedly converging anteriad. Vertex subglabrous; laterally transversely rugulose, without punctures. 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, behind base of rostrum pit­like impressed, with sparse minute punctures, posteriorly with shallow transverse wrinkles. Rostrum 1.92 X as long as mouthparts; at widest point 1.52 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. 135°), 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. 2.7 X wider than at apex; with almost straight lateral margins converging apicad; apical processes subangulate, of equal length, on same level dorsoventrally. Antenna slender, as in Fig. 56 . Prothorax as long as wide (1.00 X); preapical constriction very shallow, almost absent; disc evenly convex, shining, impunctate; sides with sparse, moderately deep punctures. Metanotum with pair of indistinct lateral lobes. Elytron 2.34 X longer than wide; striae moderately impressed. Thoracic venter. Procoxa in anterior aspect 1.29 X as long as wide. Height of pterothorax 0.75 X length of elytron. Legs. Profemur 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 dorsally before apex with subangulate lobe, its apical edge leading obliquely towards uncus; overall shape of tibia subtriangular. Mesotarsus straight, 2.8 X as long as wide. Metatibia of similar size as mesotibia. Abdomen. Ventral contour anteriorly straight in lateral view, evenly rounded to constriction between sternite VI and VII. Venter subglabrous, with sparse subrecumbent to suberect setae; sternite VI with median swelling in front of posterior margin. Pygidium 0.89 X wider than long; at extreme base microreticulate, remainder shining; sparsely punctate with shallow to moderately deep punctures. Genitalia. Apex of tergite VIII curved in evenly convex line. Sternite VIII as in Fig. 171 . Tegminal plate ( Fig. 120 ) with sides weakly converging apicad; apical edge subtruncate, densely setose with moderately long setae. Aedeagus. Apical scoop of pedon ( Fig. 149 ) ca. 1.30 X as long as wide, evenly rounded to apex, spoon­shaped. Tectum as in Fig. 136 ; lateral frame converging with straight sides to narrow apex; subapically with rounded lateral extensions. TA as in Fig. 103 ; relatively small, length ca. 300 µm; sides of frame diverging from base to ca. ¼ from apex, thus, subapically wider than at base; transfer processes basally articulated inside of frame of TA, apically projecting beyond frame´s apex; base of transfer processes at about middle of frame; without distinct dorsal plate; internal support structures of ductus ejaculatorius long, but hardly reaching level of basal sclerites; basal sclerites ca. 0.34 X of total length of TA. Cuticle of endophallus in apical 0.41 (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 ( Fig. 115 ).

Etymological note

This epithet is based on the type locality, the Torricelli mountains of Papua New Guinea .

Figures

FIGURES 36–41. Head of Euops (Metaeuops) spp., in lateral aspect; males: (36) E. tenuiflagellaris, holotype; (37) E. curvipes, holotype; (38) E. coeruleus, holotype; (39) E. torricelliensis, holotype; (40) E. piceus, holotype; (41) E. paratibialis, holotype.

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