Sciaphobus (Neosciaphobus), Scheibeli Apfelbeck, 1922

Borovec, Roman & Skuhrovec, Jiří, 2015, A review of Sciaphobus (Neosciaphobus) and descriptions of new species of Sciaphobus s. str. (Coleoptera: Curculionidae: Entiminae), Acta Entomologica Musei Nationalis Pragae 55 (2), pp. 745-785 : 773-774

publication ID	https://doi.org/10.5281/zenodo.5302796
publication LSID	lsid:zoobank.org:pub:8E2AF537-E612-4D8A-876D-015B61E5847F
DOI	https://doi.org/10.5281/zenodo.5331166
persistent identifier	https://treatment.plazi.org/id/03AA879E-DE1A-CD6F-FED9-9A19FB8EFEE1
treatment provided by	Marcus (2021-08-27 22:25:37, last updated by Plazi 2023-11-05 02:57:14)
scientific name	Sciaphobus (Neosciaphobus)
status

Treatment

Key to the species of the subgenus Neosciaphobus View in CoL

1 Elytra with conspicuous, alternate bright greenish squamose and black glabrous intervals ( Figs 3A–D View Fig ). Size: 3.90–4.90 mm. .............................. S. (N.) vittatus ( Gyllenhal, 1834) View in CoL

– Elytra with all intervals squamose, greyish or brownish ( Figs 1A, C, E View Fig ). ...................... 2

2 Metafemora in both sexes with distinct tooth. Apex of aedeagus in ventral view with regularly convex sides ( Figs 5A, B, C View Fig ). ............................................................................. 3

– Metafemora in both sexes unarmed. Apex of aedeagus in ventral view with concave sides ( Figs 5D, E View Fig ). .................................................................................................................... 7

3 Rostrum slender and long, 1.1× as long as wide ( Fig. 4A View Fig ). Pronotum narrow, 1.1× as wide as long ( Fig. 1A View Fig ). Aedeagus in dorsal view with rounded sides ( Fig. 5A View Fig ). Size: 4.30 mm. ........................................................................................... S. (N.) angustus View in CoL sp. nov.

– Rostrum wider and shorter, isodiametric or 1.1× as wide as long ( Figs 4D, K, L View Fig ). Pronotum wider, 1.2–1.4× as wide as long ( Figs 1C, E, G View Fig ). Aedeagus in ventral view parallelsided ( Figs 5B, C, F View Fig ). ...................................................................................................... 4

4 Metatarsi slender, onychium 1.3–1.4× as long as tarsomere III. Femora blackish ( Figs 2J, L View Fig ). Aedeagus in lateral view with drop-shaped apex ( Fig. 5F View Fig ). Size: 3.60–4.10 mm. ....... ............................................................. S. (N.) subnudus ( Desbrochers des Loges, 1892) View in CoL

– Metatarsi shorter, onychium at most 1.1× as long as tarsomere III. Femora brownish ( Figs 1F, H View Fig ). Aedeagus in lateral view regularly pointed ( Figs 5B, C View Fig ). ................................... 5

5 Elytra with uniformly coloured greyish scales of equal size. Colouration of elytral interval 7 almost identical but slightly paler than that of other intervals, with only slightly more whitish scales ( Fig. 1D View Fig ). Striae distinctly wider than intervals. Pronotum, head, rostrum and femora with wide scales of uniform colour ( Fig. 1C View Fig ). Parthenogenetic species. Size: 3.60–4.60 mm. .................................................... S. (N.) ningnidus ( Germar, 1824) View in CoL

– Elytra bicolorous, with smaller brownish and larger greyish scales. Elytral interval 7 distinctly paler than other intervals, covered with whitish scales ( Figs 1F, H View Fig ). Striae narrower than intervals. Pronotum, head, rostrum and femora with wide and narrow scales of different colour ( Figs 1E, G View Fig ). Amphigonic species. ............................................................... 6

6 Elytra wider, 1.26–1.28× as long as wide ( Figs 1E, G View Fig ). Metafemora with large tooth. Aedeagus regularly tapered in apical half in lateral view ( Fig. 5B View Fig ). Size: 3.70–4.50 mm. .... ................................................................................. S. (N.) globipennis Apfelbeck, 1922 View in CoL

– Elytra narrower, 1.32–1.34× as long as wide ( Figs 1I, K View Fig ). Metafemora with small tooth. Aedeagus tapered in apical quarter in lateral view ( Fig. 5C View Fig ). Size: 3.10–3.90 mm. .......... .......................................................................................... S. (N.) reitteri ( Stierlin, 1884) View in CoL

7 Eyes flat, barely projecting beyond outline of head ( Figs 4G, H View Fig ). Scutellum View in CoL small, triangular, glabrous ( Figs 2A, C View Fig ). Rostrum wide and short ( Figs 4G, H View Fig ). Elytral intervals 7–10 with green scales, scales on interval 7 denser than on other intervals, hiding integument ( Figs 2B, D View Fig ). Elytral striae conspicuous, wide. Size: 4.40–5.80 mm. ................................ ...................................................................................... S. (N.) scheibeli Apfelbeck, 1922 View in CoL

– Eyes convex, distinctly projecting beyond outline of head ( Figs 4I, J View Fig ). Scutellum View in CoL big, subquadrate, densely squamose ( Figs 2E, G View Fig ). Rostrum slender and long ( Figs 4I, J View Fig ). Elytral intervals 6–10 with grey scales, scales on interval 7 equally sparse as on other intervals, not hiding integument ( Figs 2F, H View Fig ). Elytral striae inconspicuous, narrow. Size: 5.10–7.30 mm. .......................................................... S. (N.) squalidus ( Gyllenhal, 1834) View in CoL

References

APFELBECK V. 1922: Fauna insectorum balcanica. VIII. Zur Kenntnis der balkanischen Curculioniden (Col.). Revision der Gattungen Polydrusus Germ. und Sciaphobus Dan. Glasnik Zemaljskog Muzeja u Bosni i Hercegovini 33 - 34: 49 - 72.

DESBROCHERS DES LOGES J. 1892: Especes inedites de Curculionides de l'Ancien Monde (1). Le Frelon 1: 110 - 123.

GERMAR E. F. 1824: Insectorum species novae aut minus cognitae, descriptionibus illustratae. Vol. 1. Coleoptera. J. C. Hendelii et filii, Halae, xxiv + 624 + 2 pls.

GYLLENHAL L. 1834: [new taxa]. In: SCHOENHERR C. J. 1834: Genera et species curculionidum, cum synonymia hujus familiae. Species novae aut hactenus minus cognitae, descriptionibus a Dom. Leonardo Gyllenhal, C. H. Boheman, et entomologis aliis illustratae. Tomus secundus. Pars prima. Paris, Roret, 326 pp.

STIERLIN W. G. 1884: Bestimmungs-Tabellen europaischer Russelkafer. II. Brachyderidae. Mittheilungen der Schweizerischen Entomologischen Gesellschaft 7: 57 - 98.

Figures

Fig. 3. Habitus of Neosciaphobus species: Sciaphobus vittatus (Gyllenhal, 1834): male (A – dorsal view, B – lateral view), female (C – dorsal view, D – lateral view).

Fig. 1. Habitus of Neosciaphobus species. Sciaphobus angustus sp. nov.:Holotype, male (A – dorsal view, B – lateral view); S. ningnidus (Germar, 1824): female (C – dorsal view, D – lateral view); S. globipennis Apfelbeck, 1922: male (E – dorsal view, F – lateral view), female (G – dorsal view, H – lateral view); S. reitteri (Stierlin, 1884): male (I – dorsal view, J – lateral view), female (K – dorsal view, L – lateral view).

Fig. 5. Aedeagus of Neosciaphobus and Sciaphobus (s. str.) species; Sciaphobus angustus sp. nov., holotype (A); S. globipennis Apfelbeck, 1922 (B); S. reitteri (Stierlin, 1884) (C); S. scheibeli Apfelbeck, 1922 (D); S. squalidus (Gyllenhal, 1834) (E); S. subnudus (Desbrochers des Loges, 1892) (F); S. vittatus (Gyllenhal, 1834) (G); S. abbreviatus (Desbrochers de Loges, 1871) (H); S. dorsualis (Gyllenhal, 1834) (I); S. formaneki sp. nov.: holotype (J); S. pelikani sp. nov.: holotype (K); S. rasus (Seidlitz, 1867) (L).

Fig. 4. Rostra of Neosciaphobus and Sciaphobus (s. str.) species: Sciaphobus angustus sp. nov., holotype, male (A); S. globipennis Apfelbeck, 1922, male (B), female (C); S. ningnidus (Germar, 1824), female (D); S. reitteri (Stierlin, 1884), male (E), female (F); S. scheibeli Apfelbeck, 1922, male (G), female (H); S. squalidus (Gyllenhal, 1834), male (I), female (J); S. subnudus (Desbrochers des Loges, 1892), male (K), female (L); S. vittatus (Gyllenhal, 1834), male (M), female (N); S. abbreviatus (Desbrochers des Loges, 1871), male (O), female (P); S. dorsualis (Gyllenhal, 1834), male (Q), female (R); S. formaneki sp. nov., holotype, male (S), paratype, female (T); S. pelikani sp. nov., holotype, male (U), paratype, female (V); S. rasus (Seidlitz, 1867), male (W), female (Y).

Fig. 2. Habitus of Neosciaphobus species. Sciaphobus scheibeli Apfelbeck, 1922: male (A – dorsal view, B – lateral view), female (C – dorsal view, D – lateral view); S. squalidus (Gyllenhal, 1834): male (E – dorsal view, F – lateral view), female (G – dorsal view, H – lateral view); S. subnudus (Desbrochers des Loges, 1892): male (I – dorsal view, J – lateral view), female (K – dorsal view, L – lateral view).