Sciaphobus (Neosciaphobus) Scheibeli Apfelbeck 1922
Creators: name: Borovec, Roman
name: Skuhrovec, Jiří
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Sciaphobus

description: Key to the species of the subgenus Neosciaphobus   
 1 Elytra with conspicuous, alternate bright greenish squamose and black glabrous intervals (Figs 3A–D). Size: 3.90–4.90 mm...............................  S. (N.) vittatus  (Gyllenhal, 1834)   
– Elytra with all intervals squamose, greyish or brownish (Figs 1A, C, E)....................... 2  
2 Metafemora in both sexes with distinct tooth. Apex of aedeagus in ventral view with regularly convex sides (Figs 5A, B, C).............................................................................. 3  
– Metafemora in both sexes unarmed. Apex of aedeagus in ventral view with concave sides (Figs 5D, E)..................................................................................................................... 7  
 3 Rostrum slender and long, 1.1× as long as wide (Fig. 4A). Pronotum narrow, 1.1× as wide as long (Fig. 1A). Aedeagus in dorsal view with rounded sides (Fig. 5A). Size: 4.30 mm............................................................................................  S. (N.) angustus sp. nov.    
– Rostrum wider and shorter, isodiametric or 1.1× as wide as long (Figs 4D, K, L). Pronotum wider, 1.2–1.4× as wide as long (Figs 1C, E, G). Aedeagus in ventral view parallelsided (Figs 5B, C, F)....................................................................................................... 4  
 4 Metatarsi slender, onychium 1.3–1.4× as long as tarsomere III. Femora blackish (Figs 2J, L). Aedeagus in lateral view with drop-shaped apex (Fig. 5F). Size: 3.60–4.10 mm.....................................................................  S. (N.) subnudus  (Desbrochers des Loges, 1892)   
– Metatarsi shorter, onychium at most 1.1× as long as tarsomere III. Femora brownish (Figs 1F, H). Aedeagus in lateral view regularly pointed (Figs 5B, C).................................... 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). Striae distinctly wider than intervals. Pronotum, head, rostrum and femora with wide scales of uniform colour (Fig. 1C). Parthenogenetic species. Size: 3.60–4.60 mm.....................................................  S. (N.) ningnidus  (Germar, 1824)   
– Elytra bicolorous, with smaller brownish and larger greyish scales. Elytral interval 7 distinctly paler than other intervals, covered with whitish scales (Figs 1F, H). Striae narrower than intervals. Pronotum, head, rostrum and femora with wide and narrow scales of different colour (Figs 1E, G). Amphigonic species................................................................ 6  
 6 Elytra wider, 1.26–1.28× as long as wide (Figs 1E, G). Metafemora with large tooth. Aedeagus regularly tapered in apical half in lateral view (Fig. 5B). Size: 3.70–4.50 mm......................................................................................  S. (N.) globipennis  Apfelbeck, 1922   
 – Elytra narrower, 1.32–1.34× as long as wide (Figs 1I, K). Metafemora with small tooth. Aedeagus tapered in apical quarter in lateral view (Fig. 5C). Size: 3.10–3.90 mm.....................................................................................................  S. (N.) reitteri  (Stierlin, 1884)   
 7 Eyes flat, barely projecting beyond outline of head (Figs 4G, H). Scutellum small, triangular, glabrous (Figs 2A, C). Rostrum wide and short (Figs 4G, H). Elytral intervals 7–10 with green scales, scales on interval 7 denser than on other intervals, hiding integument (Figs 2B, D). Elytral striae conspicuous, wide. Size: 4.40–5.80 mm....................................................................................................................... S.  (N.) scheibeli  Apfelbeck, 1922   
 – Eyes convex, distinctly projecting beyond outline of head (Figs 4I, J). Scutellum big, subquadrate, densely squamose (Figs 2E, G). Rostrum slender and long (Figs 4I, J). Elytral intervals 6–10 with grey scales, scales on interval 7 equally sparse as on other intervals, not hiding integument (Figs 2F, H). Elytral striae inconspicuous, narrow. Size: 5.10–7.30 mm........................................................... S.  (N.) squalidus  (Gyllenhal, 1834)
description: Published as part of Borovec, Roman & Skuhrovec, Jiří, 2015, A review of Sciaphobus (Neosciaphobus) and descriptions of new species of Sciaphobus s. str. (Coleoptera: Curculionidae: Entiminae), pp. 745-785 in Acta Entomologica Musei Nationalis Pragae 55 (2) on pages 773-774, DOI: 10.5281/zenodo.5302796