Euops (Flavoriedeliops) tamilnadunsis (Legalov) Legalov, 2009

Riedel, Alexander, 2009, A taxonomic study of the Indian species of Euops Schoenherr (Coleoptera: Curculionoidea: Attelabidae), Zootaxa 2125, pp. 1-56 : 13-16

Euops (Flavoriedeliops) tamilnadunsis (Legalov) comb. n.

( Figs. 3, 4 , 15, 16 , 33–38 , 103 , 106 –107, 117 , 124 , 131 , 160–162 , 169 , 175, 179 , 184 )

Flavoriedeliops tamilnadunsis Legalov, 2003: 388 (type locality: Nilgiri hills, 10km SW of Manjoor).

Diagnosis. Coloration orange, only eyes and denticles on legs black ( Figs. 3–4 , 15–16 ); pronotum smooth, sparsely punctate; prementum with two apical teeth; mesotibia in male ( Fig. 124 ) subapically with angulate dorsal extension; TA as in Fig. 160 .

Redescription. Holotype, male. Body length: 2.24 mm. Coloration orange, only eyes and denticles on legs black.

Head ( Fig. 106 ). Gena 0.88 x as long as width of head behind eyes, genae markedly converging anteriad. Vertex shining, sparsely punctate with minute punctures; with row of small punctures along posterior margin of eye. Eyes in dorsal view moderately prominent, set off from lateral contour of head; medially contiguous for ca. 0.1 x their length, most approximated in middle of their length. Ventral surface in front of gular region shining, smooth, except for weakly impressed midline and few minute scattered punctures.

Rostrum 1.43 x longer than mouthparts, sides basally subparallel, markedly diverging towards apex, at widest point 1.42 x wider than at base; in cross section dorsally weakly rounded; dorsum above antennal insertions with rounded prominence, anteriorly weakly bisinuate to apex, surface subglabrous, with sparse minute punctures; interantennal area converging anteriad with concave margins. Clypeus medially with broad extension bordered by pair of sublateral notches. Basal lateral groove distinct, straight, terminating at level of ventral margin of eye. Venter sharply delimited against that of head, forming angle of ca. 120°, weakly convex to apex, basally without submental median carina; dorsal and ventral contours converging from base to apex. Submentum subglabrous, anterior margin broadly concave, laterally slightly projecting and embracing base of prementum. Prementum at base 1.4 x wider than long, ca. 3.5 x wider than at apex; surface flat; sides bisinuate, at base somewhat extended laterad, converging apicad; anteriorly with 2 moderately long apical processes.

Antenna as in Fig. 117 .

Proventriculus ( Fig. 103 ) with eight uniform primary folds bearing a row of dentiform processes; without distinctly sclerotised gnathal ridges; with indistinct secondary folds bearing few denticles; without pulvilli.

Thorax. Prothorax 0.89 x as long as wide, subbasal constriction shallow, sides converging in straight line to apex, without preapical constriction; anterior margin laterally simple, without collar-like extension in front of procoxa; disc shining, sparsely punctate with small punctures; prepectus shorter than postpectus. Mesosternum simple, without protrusion, rugulose. Metanotum without lateral lobes or sutural spines. Metasternum ventrally glabrous, laterally punctate. Height of pterothorax 0.70 x length of elytron.

Elytron 2.30 x longer than wide; humerus simple; striae moderately impressed; intervals smooth, shining.

Legs. Procoxa simple; 1.07 x longer than wide; approaching anterior margin of prothorax; in anterior aspect coxae with inner contours diverging in straight line, rounded to apex; anterior surface glabrous. Femora simple, without teeth or knobs; ventral surface basally with sparse erect setae; anterior surface shining, subglabrous, with black granules bearing thin recumbent setae; posterior surface glabrous. Profemur asymmetrically clavate, markedly swollen, thickest at 0.4 of length from apex, with inconspicuous patch of dense recumbent setae, at base with indistinct stalk; anterior contour convex; posterior contour almost straight; dorsal contour markedly sinuate; ventral contour bisinuate, subapically with distinct constriction. Protibia in dorsal aspect straight; in anterior aspect evenly weakly curved ventrad; ventral contour slightly sinuate, dorsal and ventral contours subparallel; ventral surface sparsely denticulate, each denticle bearing a suberect seta; uncus terminal; anterior distal comb slightly shortened ventrally; posterior distal comb oblique behind tarsal articulation, dorsal third shortened. Mesotibia ( Fig. 124 ) subapically with angulate dorsal extension; dorsal edge of meso- and metatibia distinctly crenulate. Protarsus as long as metatarsus; tarsomere 1 shorter than 2+3.

Abdomen. Sutures between ventrites 1–4 fused, weakly impressed. Venter laterally punctate, rugulose, sculpture very shallow, almost subglabrous; disk anteriorly concave, posteriorly convex to constriction between ventrites 4 and 5; surface subglabrous, with scattered recumbent setae. Pygidium 1.71 x wider than long; basally weakly microreticulate; moderately densely punctate; sparsely setose.

Terminalia. Sternite VIII ( Fig. 162 ) subtrapezoid, in apical 2/3 medially with membranous ovate area; apex truncate, with sparse short setae becoming slightly longer towards sides; sides weakly converging in straight line from base to apex; base truncate. Tegminal plate ( Fig. 38 ) with sides subparallel from base to broadly rounded, evenly setose apex. Aedeagus with apical scoop of pedon ca. 1.23 x longer than wide, more strongly sclerotised in middle, sides subparallel, apex subtruncate, weakly rounded; tectum with sides converging, apex rounded, medially weakly sclerotised, lateral margins more distinctly sclerotised; TA ( Figs. 36–37 , 160 ) with frame ca. 2.23 x longer than wide, sides converging from base to apex; transfer processes very short on apex of frame, without dorsal plate; internal support structures of ductus ejaculatorius in apical portion attached to transfer processes, not reaching level of basal sclerite; basal sclerite ca. 0.50 x of total length of TA, 2.0 x longer than wide, basally with long lateral hook-like extensions, anchor-shaped. Endophallus with cuticle densely setose.

Female (specimen from Ootacamund, Avalanche). As holotype except: Length 2.24 mm. Head ( Fig. 107 ) with gena 0.85 x as long as width of head behind eyes. Rostrum 1.42 x longer than mouthparts. Prothorax 0.87 x as long as wide. Elytron 2.40 x longer than wide. Height of pterothorax 0.73 x length of elytron. Procoxa as long as wide (1.00 x). Protibia ( Fig. 131 ) with dorsal contour evenly convex, ventral contour markedly sinuate; ventral surface setose with suberect setae, apically and in middle denticulate. Tibial apex with uncus in dorsal position, subventrally with premucro. Mesotibia subapically simple, without dorsal extension. Abdomen with setose patch 1.13 x longer than wide, ventrites 1–3 each with double row of modified setae, ventrite 4 with single row. Pygidium 1.64 x wider than long. Ovipositor ( Fig. 175 ) without hemisternites. Sternite VIII ( Fig. 169 ) ca. 0.7 x as wide as tergite VIII, apex ill-defined, base without apodeme. Spermatheca ( Fig. 179 ) with body moderately tapering apicad; apex extended, process bent; spermathecal gland long, digitiform.

Intraspecific variation. Size: length 2.20–2.30 mm (n=6, x =2.26 ± 0.04); prothorax 0.88–0.89 x as long as wide in males (n=3, x =0.88 ± 0.01), 0.85–0.87 x as long as wide in females (n=3, x =0.86 ± 0.01); elytron 2.01–2.42 x longer than wide (n=6, x =2.34 ± 0.08); height of pterothorax 0.70–0.72 x length of elytron in males (n=3, x =0.71 ± 0.01), 0.73–0.78 x in females (n=3, x =0.76 ± 0.03); abdomen with patch of modified setae in female 1.13–1.27 x longer than wide (n=3, x =1.21 ± 0.07); pygidium 1.56–1.71 x wider than long in males (n=3, x =1.61 ± 0.09), 1.48–1.64 x in females (n=3, x =1.59 ± 0.10).

Material examined. Holotype, male ( Figs. 33–38 ): 1) [white, rectangular] upper side of label: “S INDIA, Tamil Nadu st., Nilgiri hills, alt. 2100m, 10km SW of Manjoor, near Carrington estate”; lower side of label: “Thiasola reserv. forest, 76° 35´E 11° 12´N, 14.–19.VI.1999, Kejval & Trýzna leg. [printed]”; 2) [red, rectangular]: “ Holotypus, Flavoriedeliops tamilnadunsis Legalov , sp.n. [printed]” condition: mounted on card; abdomen separated, venter glued separately on card, tergites missing; genitalia remounted, transferred to glycerol in microtube; appears to be slightly teneral; terminal article of left antenna missing (PKC). Other specimens. S-India, Nilgiri Hills: 1 male, 2 females, G.F. Hampson, 94-89 ( BMNH); 1 male, 1 female, Ootacamund, Avalanche, 23.VIII.1989, leg. A. Riedel ( ARC in SMNK).

Distribution ( Fig. 184 ). INDIA, Tamil Nadu (Nilgiri Hills).

Figures

FIGURE 184. Distribution of Euops tamilnadunsis and E. trichinopoliensis (areas above 500 m shaded).

FIGURES 1 – 6. Habitus of Euops spp., dorsal aspect: (1) E. andrewesi, male (11 km SE Kotagiri); (2) E. andrewesi, female (11 km SE Kotagiri); (3) E. tamilnadunsis, male (Ootacamund); (4) E. tamilnadunsis, female (Ootacamund); (5) E. bowringii, male (11 km SE Kotagiri); (6) E. bowringii, female (11 km SE Kotagiri).

FIGURES 13 – 18. Habitus of Euops spp., lateral aspect: (13) E. andrewesi, male (11 km SE Kotagiri); (14) E. andrewesi, female (11 km SE Kotagiri); (15) E. tamilnadunsis, male (Ootacamund); (16) E. tamilnadunsis, female (Ootacamund); (17) E. bowringii, male (11 km SE Kotagiri); (18) E. bowringii, female (11 km SE Kotagiri).

FIGURES 33 – 38. Euops tamilnadunsis, holotype: (33) dorsal aspect, (34) lateral aspect, (35) labels, 36 – 38: genitalia, (36) aedeagus, dorsal aspect, (37) aedeagus, lateral aspect, (38) tegmen.

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

FIGURES 104 – 109. Head of Euops spp.; in lateral aspect (above); in dorsal aspect (below): (104) E. andrewesi, male (11 km SE Kotagiri); (105) E. andrewesi, female (11 km SE Kotagiri); (106) E. tamilnadunsis, male (Ootacamund); (107) E. tamilnadunsis, female (Ootacamund); (108) E. bowringii, lectotype; (109) E. bowringii, female (11 km SE Kotagiri).

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 158 – 160. Male genitalia of Euops spp., transfer apparatus in dorsal aspect: (158) E. andrewesi, lectotype (159) E. bowringii (11 km SE Kotagiri); (160) E. tamilnadunsis (Ootacamund).

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.