Euops illegalovi, 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 : 18-21

Euops illegalovi sp. n.

( Figs 4 , 28 , 53 , 60 , 105 , 114 , 121 , 145 , 156 , 173 , 195 , 208 , 220 )

Diagnosis

Coloration largely black with slight bluish lustre; scutellum and anterior surface of procoxae bright metallic greenish blue. Male: Aedeagus with area of long, thin, centripetally directed setae between endophallic sclerites. TA ( Fig. 105 ) in dorsal aspect with transfer processes parallel; in lateral aspect with marked, hook­like extension.

Range ( Fig. 220 )

Jayawijaya Prov. (Angguruk, Elelim, Emdoman, Okloma, Galbok, Taramlu, Borme). Elevation: 750–1700 m.

Material examined

Holotype. WEST NEW GUINEA, Jayawijaya Prov. , Borme, 1000–1300 m, 13– 18.VIII.1992, leg. A.Riedel ( MZB) . Paratypes. WEST NEW GUINEA, Jayawijaya Prov .: 7 males, 7 females, Elelim , Km 132 NE Wamena, 500–750 m, 18.XII.2004, leg. A.Riedel ( ARC) ; 2 males, 1 female, Elelim , Km 132 NE Wamena, 450–750 m, 17.XII.2004, leg. A.Riedel ( ARC) ; 3 males, 1 female, Angguruk , 1600–1700 m, 21/27/ 30.IX.1991, leg. A.Riedel ( ARC) ; 4 males, 1 female, Angguruk ­ Tanggeam , 1500–1800 m, 28– 29.IX.1991, leg. A.Riedel ( ARC) ; 1 male, 1 female, Galbok (W Nalca), 1700–1800 m, 3.X.1993, leg. A.Riedel ( ARC) ; 2 males, Okloma , 1650–1800 m, 30.IX.–1.X.1993, leg. A.Riedel ( ARC) ; 4 males, Emdoman , 800–1200 m, 14–15.IX.1992, leg. A.Riedel ( ARC) ; 2 males, 2 females, Emdoman , 900–1200 m, 29.IX.1993, leg. A.Riedel ( ARC) ; 1 male, Bime , 1600–2000 m, 10.IX.1993, leg. A.Riedel ( ARC) ; 4 males, 1 female, Taramlu , 1500–1700 m, 6.IX.1993, leg. A.Riedel ( ARC) ; 3 males, Borme , 1000–1450 m, 12– 15.VIII.1992, leg. A.Riedel ( ARC) ; 5 males, 4 females (1 marked as “ allotype ”), same data as holotype ( ARC, MZB) ; 2 females, Borme , trail to Omban, 1000–1300 m, 3.IX.1993, leg. A.Riedel ( ARC) .

Description

Holotype, male. Length, pronotum + elytron: 3.15 mm. Coloration ( Fig. 4 ) largely black with slight bluish lustre; scutellum bright metallic greenish­blue; dorsal surface of head with bluish lustre; anterior surface of procoxae and metasternum metallic green; anterior surface of meso­ and metafemur and abdominal venter with greenish lustre; antenna black. Head. As in Fig. 28 . Gena as long as (1.00 X) width of head immediately behind eyes. Contours of genae in dorsal view markedly converging anteriad. Vertex subglabrous, laterally behind eye sparsely punctate with minute 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, with sparse shallow punctures, posteriorly with transverse wrinkles. Rostrum 2.11 X as long as mouthparts; at widest point 1.42 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, weakly sinuate to apex; ventrally on submentum with few long, stiff, suberect setae. Mouthparts. Prementum at base 1.7 X wider than long, ca. 2.4 X wider than at apex; with weakly sinuate lateral margins converging apicad; apical processes subangulate, subequal in length, median process slightly longer, protruding slightly more ventrad than lateral processes. Antenna slender, as in Fig. 60 . Prothorax 0.96 X as long as wide; preapical constriction very shallow, almost absent; disc evenly convex, shining, impunctate; sides with dense, deep punctures. Metanotum with pair of distinct lateral lobes. Elytron 2.32 X longer than wide; striae moderately impressed. Thoracic venter. Height of pterothorax 0.79 X length of elytron. Procoxa in anterior aspect 1.25 X as long as wide. Legs. Profemur subsymmetrically clavate, moderately swollen, thickest at 0.33 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, 2.7 X as long as wide. Metatibia of similar size as mesotibia. Abdomen. Ventral contour anteriorly straight in lateral view, sternite VI posteriorly roundly projecting, between sternite VI and VII with marked constriction. Ventral surface of sternites III–VI each with double patch of suberect to recumbent setae, at middle with subglabrous longitudinal band; sternite VI with swelling in front of posterior margin. Pygidium 0.92 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. 173 . Tegminal plate ( Fig. 121 ) with sides weakly converging apicad; apical edge broad, subtruncate, densely setose with moderately long setae. Aedeagus. Apical scoop of pedon ( Fig. 156 ) ca. 1.26 X as long as wide, evenly rounded to apex, spoon­shaped. Tectum as in Fig. 145 ; lateral frame converging with straight sides to pointed apex; subapically without extensions. TA as in Fig. 105 ; frame with sides evenly converging towards apex; transfer processes in dorsal aspect parallel; in lateral aspect with marked, hook­like extension; transfer processes basally articulated inside of frame of TA, apically markedly 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 not reaching level of basal sclerites; basal sclerites ca. 0.35 X of total length of TA. Cuticle of endophallus in apical 0.46 (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. 114 ).

Allotype, female. Same as holotype except: length, pronotum + elytron: 3.19 mm. Head as in Fig. 53 . Gena 0.89 X as long as width of head immediately behind eyes. Profile of vertex with shallow constriction immediately behind eye. Rostrum 1.66 X as long as mouthparts; at widest point 1.42 X wider than at base. Prothorax 0.94 X as long as wide. Disk at middle with very shallow transverse impression. Elytron 2.27 X longer than wide. Thoracic venter. Height of pterothorax 0.81 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 crenulate, setose with suberect setae; tibial apex with uncus and minute premucro; premucro in ventral position. Abdomen. Setose patch of venter 1.22 X as long as wide, consisting of 3 double rows of modified setae. Pygidium about as long as wide (1.01 X). Genitalia. Sternite VIII as in Fig. 195 . Tergite VIII apically rounded. Spermatheca as in Fig. 208 ; basally with long siphon­like extension; slender; subisodiametric from insertion with gland to shortly before apex. Length of ductus spermathecae plus spermatheca 2.0 X as long as tergite VIII.

Intraspecific variation

Length, pronotum + elytron: males 2.25–3.33 mm (n=41, =2.90 ± 0.24); females 2.72–3.33 mm (n=20, =3.03 ± 0.17). Coloration of pronotum and elytra either with slight bluish to bronze lustre, or with more distinct bluish lustre. Prothorax 0.91–1.03 X as long as wide in males (n=41, =0.96 ± 0.02), 0.89–0.97 X as long as wide in females (n=20, =0.93 ± 0.02). Elytron 2.31–2.52 X longer than wide in males (n=41, =2.42 ± 0.06), 2.21–2.43 X longer than wide in females (n=20, =2.35 ± 0.06). Thoracic venter. Height of pterothorax 0.73–0.81 X length of elytron in males (n=41, =0.76 ± 0.02), 0.79–0.86 X length of elytron in females (n=20, =0.82 ± 0.02). Abdomen. Setosity of venter in some specimens extended from sternites III–VI to sternites III and VII, more or less dense. Pygidium 0.87–1.04 X wider than long in males (n=40, =0.96 ± 0.05), 1.00– 1.10 X wider than long in females (n=19, =1.03 ± 0.03). Aedeagus. Tectum subapically with or without angulate lateral extensions; apex acute or subangulate. Female patch of modified setae 1.05–1.38 X as long as wide (n=20, =1.21 ± 0.09).

Etymological note

This species is named for a fictitious character, Sibirian taxonomist Illegalov. He is notorious for ignoring the copyright of other authors. Any resemblance to a real person is purely accidental.

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 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 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 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.