Tapinomorphus orientalis ( Hustache, 1931 ) Borovec & Perrin, 2019

Borovec, Roman & Perrin, Hélène, 2019, Systematic position of Ascopus Marshall, Oreosecus Marshall, Perarogula Hoffmann and Rhadinocopes Hustache (Coleoptera: Curculionidae: Entiminae) with description of a new species of Ascopus from Guinea, Zootaxa 4668 (2), pp. 245-257 : 255

Tapinomorphus orientalis ( Hustache, 1931) , comb. nov.

( Fig. 7 )

Rhadinocopes orientalis Hustache, 1931: 59 (original description).

Rhadinocopes orientalis: Emden & Emden 1939: 233 (catalogue); Alonso-Zarazaga & Lyal 1999: 150 (catalogue).

Type locality. Ostafrica [East Africa] .

Type material. Rhadinocopes orientalis . Lectotype (here designated): 1 female ( MNHN, Hustache coll.), ‘Ost Africa / Kraatz [hw] // COTYPE [p, red ink] // MUSEUM PARIS / 1949 / Col.A. HUSTACHE [p] // LECTOTYPUS / Rhadinocopes / orientalis Hustache, 1931 / Borovec & Perrin desig. 2019 [p, red] // Tapinomorphus / orientalis (Hustache) / Borovec & Perrin det. 2019 [p]’. Paralectotype: 1 spec. ( MNHN, Hustache coll.), ‘Ost Africa / Kraatz [hw] // MUSEUM PARIS / 1949 / Col. A. HUSTACHE [p] // Rhadinocopes / orientalis / m [hw] // PARALEC- TOTYPUS / Rhadinocopes / orientalis Hustache, 1931 / Borovec & Perrin desig. 2019 [p, red] // Tapinomorphus / orientalis (Hustache) / Borovec & Perrin det. 2019 [p]’.

Remarks. Rhadinocopes orientalis was described based on 5 specimens from Kraatz’s collection. The lectotype, here designated, is 2.56 mm long and undoubtedly belongs in the genus Tapinomorphus Hartmann, 1904 (tribe Sciaphilini Sharp, 1891 ), characterized by rostrum with epifrons at base almost as wide as space between eyes, clearly separated from head by narrow V-shaped stria, glabrous, declined frons, epistome absent, antennal scrobes laterally placed, furrow-shaped, reaching ventral border of the eyes, elytra without prominent humeral calli, procoxae touching anterior border of pronotum, metatibiae lacking corbels with glabrous apical surface, claws fused, metaventral process very wide, abdominal ventrites glabrous with ventrite 2 equally wide as ventrite 3 or 4, with suture between ventrite 1 and 2 straight. Because Rhadinocopes orientalis Hustache, 1931 is the type species of the genus Rhadinocopes Hustache, 1931 , Rhadinocopes is a junior subjective synonym of Tapinomorphus , syn. nov.

Within Tapinomorphus , T. orientalis is very similar to T. carinirostris Marshall, 1953 , based on the following characters: elytra without bumps or elevated intervals which are equally wide and rostrum with slender, median, longitudinal carina. It is possible to distinguish it from T. carinirostris by the longer rostrum, 1.19 × as wide as long, widest at base and tapered apicad (vs. shorter rostrum, 1.31 × as wide as long and parallel sided in T. carinirostris ), frons matt (vs. glabrous), first two funicular segments equally long (vs. segment 1 longer than segment 2), humeral parts of elytra regularly rounded (vs. obliquely subtruncate with slightly concave sides), elytra apically broadly rounded (vs. narrowly tapered apicad), intervals on elytral disc as wide as striae (vs. intervals more slender than striae), elytra with conspicuous, erect, slender subspatulate setae, distinctly longer than half the width of interval (vs. inconspicuous, semiappressed, long oval setae, as long as half the width of one interval) and appressed elytral setae subtriangular, posteriorly with concave margin (vs. long oval appressed scales).

Figures

FIGURES 5–8. Dorsal habitus. 5. A. girardi sp. nov.; 6. Tapinomorphus alticola (Hustache); 7. T. orientalis (Hustache); 8. T. porculus (Marshall). Scale = 1.00 mm.