Euops (Riedeliops) pseudoindicus, Riedel, Alexander, 2009

Riedel, Alexander, 2009, A taxonomic study of the Indian species of Euops Schoenherr (Coleoptera: Curculionoidea: Attelabidae), Zootaxa 2125, pp. 1-56 : 28-29

Euops (Riedeliops) pseudoindicus sp. n.

( Figs. 11–12 , 23–24 , 76 , 88 , 95–96 , 102 , 114–115 , 121 , 128 , 135 , 153–157 , 164 , 172 , 181 , 188 )

Diagnosis. Pronotum relatively short, 0.75–0.81 X as long as wide; anterior margin of prothorax in front of procoxa angulately projecting; mesosternum with apically rounded, cone-shaped protrusion directed anteriad ( Fig. 77 ); protibia in female ( Fig. 135 ) with dorsal contour evenly convex; mesotibia in male ( Fig. 128 ) with subapical dorsal extension short, dentiform; ventrite 4 in male in middle with inconspicuous transverse row of suberect setae ( Figs. 95–96 ); aedeagus with apical scoop of pedon ( Fig. 156 ) pointed.

Description. Holotype, male. Body length: 2.30 mm. Coloration of dorsal surface coppery, sides and venter bronze, tarsi ferruginous.

Head ( Fig. 114 ) short. Gena 0.66 x as long as width of head behind eyes. Vertex microreticulate, markedly rugose-punctate. Eyes dorsally contiguous in middle for 0.7 x their length. Ventral surface markedly transversely rugose, anteriorly near eye with few interspersed punctures.

Rostrum 1.64 x longer than mouthparts; sides subparallel to antennal insertion, anteriorly diverging until subapically rounded; at widest point 1.21 x wider than at base; dorsum above antennal insertions with weakly rounded prominence, anteriorly flat to apex. Clypeus medially with simple notch. Basal lateral groove distinct, ventrally curved, its convex side anteriorly; terminating at level of ventral eye margin. Venter basally without submental median carina. Submentum posteriorly microreticulate, anteriorly shining, with two long, stiff, suberect setae. Prementum at base 1.7 x wider than long, ca. 3.4 x wider than at apex; sides straight, converging apicad.

Antenna as in Fig. 121 .

Proventriculus ( Fig. 102 ) with eight primary folds bearing spiniform processes.

Thorax. Prothorax 0.76 x as long as wide; subbasal constriction laterally absent, dorsally shallow; sides converging in straight line to apex, without preapical constriction; anterior margin laterally in front of procoxa with collar-like extension abruptly truncated ventrally, angular in profile; disc markedly punctate-rugose, in basal half with transverse wrinkles concave, in apical half rather V-shaped; sides punctate; prepectus in lateral aspect as long as postpectus; mesosternum with apically rounded, cone-shaped protrusion directed anteriad. Height of pterothorax 0.85 x length of elytron.

Elytron 2.15 x longer than wide; intervals weakly shining, somewhat dull, with distinct coriarious sculpture of irregularly transverse wrinkles ( Fig. 88 ).

Legs. Procoxa 0.89 x as long as wide; approaching anterior margin of prothorax; in anterior aspect coxae with inner contour diverging in convex line; anterior surface microreticulate, sparsely shallowly punctate. Protibia with dorsal contour evenly convex; uncus subventral. Mesotibia ( Fig. 128 ) with subapical dorsal extension acute, subtriangularly dentiform.

Abdomen. Venter flat, surface medially sparsely punctate, sparsely setose with recumbent setae; ventrite 4 in middle with inconspicuous transverse row of suberect setae pointing backwards ( Figs. 95–96 ). Pygidium 1.08 x wider than long.

Terminalia. Sternite VIII ( Fig. 164 ) medially subdivided by membrane connecting lateral sclerotised areas; apex broadly bilobate, densely setose with long setae; base medially with marked constriction. Tegminal plate as in Fig. 157 . Aedeagus with sclerotised sides of pedon widening mesoapicad, connected to subtriangular plate fused with its short side to apical scoop, the latter ( Fig. 156 ) ca. 1.14 x longer than wide, sides sinuate and converging, apex pointed; tectum with sides converging, apically pointed; TA ( Figs. 154–155 ) flagelliform, insertion of ductus ejaculatorius ventral; basal sclerite long, narrow, folded dorsoapicad, dorsally fitting to basal half of long, C-shaped flagellum formed by fusion of extended transferprocesses. Endophallus with cuticle densely minutely denticulate.

Female. As holotype except: Length 2.26 mm. Head as in Fig. 115 . Gena 0.65 x as long as width of head behind eyes. Rostrum 1.69 x longer than mouthparts. Prothorax 0.75 x as long as wide. Elytron 2.14 x longer than wide. Protibia ( Fig. 135 ) with dorsal contour evenly convex; ventral contour evenly sinuate; uncus median. Abdomen with venter flat. Pygidium 1.05 x wider than long. Sternite VIII as in Fig. 172 . Spermatheca ( Fig. 181 ) with body moderately tapering apicad.

Intraspecific variation. Size: length 1.68–2.30 mm (n=20, x =2.12 ± 0.17); prothorax 0.75–0.81 x as long as wide (n=20, x =0.77 ± 0.02);. elytron 2.00–2.21 x longer than wide (n=20, x =2.10 ± 0.05); height of pterothorax 0.83–0.92 x length of elytron (n=20, x =0.87 ± 0.02); abdomen with patch of modified setae in female 1.19–1.90 x longer than wide (n=10, x =1.39 ± 0.23); pygidium 0.89–1.08 x wider than long in males (n=10, x =0.98 ± 0.05), 0.94–1.07 x in females (n=10, x =1.02 ± 0.05). Coloration ranging from goldencoppery to greenish-bronze and bluish-bronze. Flagellum C-shaped (as in holotype) or S-shaped.

Material examined. Holotype: INDIA, Tamil Nadu, 15 km SE Kotagiri, Kunchappanai, 11°22´N, 76° 56´E, 900m, leg. D. Hauck ( SMNK). Paratypes: INDIA, Karnataka: 11 males, 12 females, Goa, 25 km E Ponda, Molem, 15° 23´N, 74° 16´E, leg. D.Hauck, 2–4.V.2000 ( ARC in SMNK, SMNK, ZSM); 4 males, Karnataka, W Ghats, 20 km W Talguppa, Jog Falls, N 14°14´E 74° 44´, 500± 200m, leg. P. Pacholátko, 22–28.V.2002 ( ARC in SMNK); Tamil Nadu: 10 males, 9 females [including selected female paratype], same as holotype ( ARC in SMNK); 2 males, 1 female, Tamil Nadu, 11 km SE Kotagiri, Kunchappanai, 11°24´N, 76° 56´E, 1100± 100m, leg. P. Pacholátko, 3.–15.V.2002 ( ARC in SMNK); 1 male, 4 females, Tamil Nadu, 15 km SE Kotagiri, Kunchappanai, 11°22´N, 76° 56´E, leg. L. Dembický & P. Pacholátko, 17.–22.V.1997 ( RDCP); 1 female, Kunchappanai, 11°20´N, 77° 00´E, leg. R. Sauer, 12.–22.V.1994 ( ARC in SMNK); 1 female [paratype of E. indicus Legalov ], 15 km SE Kotagiri, Kunjappanai env., 900m, 11°22´N, 76° 56´E, 22–30.V.1999, leg Z. Kejval & M. Trýzna (PKC); 4 males, 1 female, Kerala, Thekkady, Peryar Lake, N 9,34° E 77,10°, 900–1000m, 19–27.IV.1997, leg. Dembický & Pacholátko ( NHMB).

Distribution ( Fig. 188 ). INDIA, Karnataka (Molem), Tamil Nadu (Nilgiri Hills). Elevation: 900–1000 m.

Figures

FIGURE 188. Distribution of Euops pseudoindicus sp. n. (areas above 500 m shaded).

FIGURES 7 – 12. Habitus of Euops spp., dorsal aspect: (7) E. indicus, male (11 km SE Kotagiri); (8) E. indicus, female (11 km SE Kotagiri); (9) E. keiseri nilgiriensis ssp. n., holotype; (10) E. keiseri nilgiriensis ssp. n., female paratype; (11) E. pseudoindicus sp. n., holotype; (12) E. pseudoindicus sp. n., female paratype.

FIGURES 19 – 24. Habitus of Euops spp., lateral aspect: (19) E. indicus, male (11 km SE Kotagiri); (20) E. indicus, female (11 km SE Kotagiri); (21) E. keiseri nilgiriensis ssp. n., holotype; (22) E. keiseri nilgiriensis ssp. n., female paratype; (23) E. pseudoindicus sp. n., holotype; (24) E. pseudoindicus sp. n., female paratype, arrow pointing to projection of prepectus.

FIGURES 71 – 78. Euops spp.: (71 – 74) apex of rostrum in ventral aspect (left), prementum (right): (71 – 72) E. indicus, (73 – 74) E. andrewesi; (75 – 76) prothorax in ventral aspect, coxae removed: (75) E. indicus, (76) E. pseudoindicus sp. n., arrows indicating projections of prepectus; (77) mesothorax of E. indicus, lateral aspect; arrow indicating protrusion; (78) pronotum of E. andrewesi.

FIGURES 87 – 92. Euops spp.: (87 – 88) detail of lateral area of right elytron, (87) E. indicus, (88) E. pseudoindicus sp. n., note transverse wrinkles; (89) right elytron of E. andrewesi, note vortically arranged transverse wrinkles; (90) protibia of E. andrewesi female; (91 – 92) mesotibia of E. indicus male.

FIGURES 93 – 99. Euops spp.: (93 – 96) apex of abdominal venter, overview (left), setose patch on ventrite 4 (right); (93 – 94) E. indicus, (95 – 96) E. pseudoindicus sp. n.; (97) E. indicus, lateral view of abdomen; arrow indicating setose patch on ventrite 4; note densely punctate sculpture; (98) E. keiseri nilgiriensis ssp. n., holotype; ventro-lateral aspect of abdomen with setose brush on ventrite 4, light-microscopy image; (99) E. andrewesi, transfer apparatus of male genitalia.

FIGURES 100 – 103. Proventriculus of Euops spp.; (100) E. andrewesi, (101) E. bowringii, (102) E. pseudoindicus sp. n., (103) E. tamilnadunsis.

FIGURES 110 – 115. Head of Euops spp.; in lateral aspect (above); in dorsal aspect (below): (110) E. indicus, male (11 km SE Kotagiri); (111) E. indicus, female (11 km SE Kotagiri); (112) E. keiseri nilgiriensis ssp. n., holotype; (113) E. keiseri nilgiriensis ssp. n., female paratype; (114) E. pseudoindicus sp. n., holotype; (115) E. pseudoindicus sp. n., female paratype.

FIGURES 116 – 122. Antenna of Euops spp.: (116) E. andrewesi (11 km SE Kotagiri); (117) E. tamilnadunsis (Ootacamund); (118) E. bowringii (11 km SE Kotagiri); (119) E. indicus (11 km SE Kotagiri); (120) E. keiseri nilgiriensis ssp. n., holotype; (121) E. pseudoindicus sp. n., holotype; (122) E. trichinopoliensis, holotype.

FIGURES 123 – 129. Left mesotibia of Euops spp. males: (123) E. andrewesi (11 km SE Kotagiri); (124) E. tamilnadunsis (Ootacamund); (125) E. bowringii (lectotype); (126) E. indicus (11 km SE Kotagiri); (127) E. keiseri nilgiriensis ssp. n., holotype; (128) E. pseudoindicus sp. n., holotype; (129) E. trichinopoliensis, holotype.

FIGURES 130 – 135. Left protibia of Euops spp. females: (130) E. andrewesi (11 km SE Kotagiri); (131) E. tamilnadunsis (Ootacamund); (132) E. bowringii (lectotype); (133) E. indicus (11 km SE Kotagiri); (134) E. keiseri nilgiriensis ssp. n., female paratype; (135) E. pseudoindicus sp. n., female paratype.

FIGURES 153 – 157. Male genitalia of Euops pseudoindicus sp. n., holotype: (153) aedeagus in dorsal aspect; (154) aedeagus in lateral aspect; (155) transfer apparatus in lateral aspect; (156) pedon; (157) tegmen.

FIGURES 161 – 167. Sternite VIII of Euops spp. males: (161) E. andrewesi, lectotype; (162) E. tamilnadunsis, holotype; (163) E. bowringii; holotype of E. armipes; (164) E. pseudoindicus sp. n., holotype; (165) E. indicus (11 km SE Kotagiri); (166) E. keiseri nilgiriensis ssp. n., holotype; (167) E. trichinopoliensis, holotype, setae probably partly abraded.

FIGURES 168 – 173. Sternite VIII of Euops spp. females: (168) E. andrewesi (11 km SE Kotagiri); (169) E. tamilnadunsis (Ootacamund); (170) E. bowringii (11 km SE Kotagiri); (171) E. indicus (11 km SE Kotagiri); (172) E. pseudoindicus sp. n., female paratype; (173) E. keiseri nilgiriensis ssp. n., female paratype.

FIGURES 174 – 182. Female terminalia of Euops spp.: (174) E. bowringii (11 km SE Kotagiri); (175) E. tamilnadunsis (Ootacamund); (176) E. indicus (11 km SE Kotagiri); (177 – 182) spermatheca: (177) E. andrewesi (11 km SE Kotagiri), (178) E. bowringii (11 km SE Kotagiri); (179) E. tamilnadunsis (Ootacamund); (180) E. indicus (11 km SE Kotagiri); (181) E. pseudoindicus sp. n., female paratype; (182) E. keiseri nilgiriensis ssp. n., female paratype.