Coeliodinus phrymos Alonso-Zarazaga & Colonnelli, 2017

Alonso-Zarazaga, Miguel Á., Colonnelli, Enzo & Caldara, Roberto, 2017, Note on Curculio rubicundus Herbst, 1795 (Coleoptera: Curculionidae)., Arquivos Entomolóxicos 18, pp. 329-334 : 331-332

Coeliodinus phrymos Alonso-Zarazaga & Colonnelli , new species

Type series. Sweden: “HAll[And]. DAgsås /ByAsJÖn /2.I.75 /Gyllerfors”, 1 mAle holotype ( Museo Civico di Zoologia , Rome, Italy) . SWeden : “Sm[åland]. BJÖrnÖ / 9. 4.1977 / G. Gillerfors ”, 1 mAle pArAtype ( Enzo Colonnelli collection, Rome, ItAly) . SWeden : “HAll[And]. DAgsås / 12.8.1984 / G. Gyllerfors ”, 1 femAle pArAtype ( Enzo Colonnelli collection, Rome, Italy) .

Other material. We studied samples from Sweden, the Netherlands, England, Poland and Italy. For distribution, details on variability and size and host plants, make reference to Dieckmann (1972), Colonnelli (2004), Rheinheimer & Hassler (2010) and Alonso-Zarazaga et al. (2017).

Description. Holotype: 2.3 mm. Shining, ferrous-red, pronotum and under surface reddish-brown. General shape and dorsal vestiture as in Fig. 1 . Intervals with single row of seta-like scales on apical half. Legs rather short and thin, meso and metatibiae mucronate inwards at apex. Ventrites 1 and 2 quite flat. Aedeagus as in Fig. 2 . The male paratype, whose body length is 2.5 mm, is very similar to the holotype, except that rostrum and pronotum, apical margin excepted, is blackish like the basal margin of elytra and the suture. The female paratype, which is 2.6 mm long, is like the holotype, but its rostrum is a trifle longer, the meso- and metatibiae are not mucronate, and the abdomen is slightly convex.

Diagnosis and comparative notes. A western Palaearctic Coeliodinus Dieckmann, 1972 separated by its size at most of 3 mm from the larger (3.2-3.5 mm) eastern Palaearctic C. parcesquamosus (Hustache, 1916) , and by its usually red-brown or brown rostrum and posterior half of elytra with a single row of scales on intervals from the Euro-Siberian C. nigritarsis (Hartmann, 1895) and the eastern Palaearctic C. etorofuensis Kôno, 1935 whose rostrum is black and elytral scales are arranged in two irregular rows on posterior half. From the Japanese C. brunneus (Hustache, 1916) the new species is distinct by its paler colour, at least partly reddish instead of dark brown. Moreover, the eastern Palaearctic C. sibiricus (Reitter, 1916) and C. subrubicundus (Reitter, 1916) have an entirely reddish-brown body.

Etymology. The new species is named from the Greek φρύΜΟΣ, meAning mixture, in reference to the confusion till now caused by the misuse of the Herbst name. A noun in apposition, invariable.

We establish here the following new synonymy: Coeliodinus phrymos Alonso-Zarazaga & Colonnelli , new species (= Curculio rubicundus Herbst, 1795 sensu Paykull, 1800 not Curculio rubicundus Herbst, 1795 , unavailable name; = Curculio melanocephalus Marsham, 1802 not Curculio melanocephalus DeGeer, 1775 , syn. nov.).

The type species of the genus Coeliodinus Dieckmann, 1972 was originally designated as Curculio rubicundus Herbst, 1795 . From the nomenclatural reasoning presented above, it is clear that the species Dieckmann used is in fact Curculio rubicundus Herbst, 1795 sensu Paykull, 1800 , a misidentification. In application of Art. 70.3.2 ( ICZN, 1999), we select as type species of Coeliodinus the valid name of the latter, i.e., Coeliodinus phrymos Alonso-Zarazaga & Colonnelli , sp. n.

Figures

Figs. 1-3.- Coeliodinus phrymos n. sp., holotype. 1.- Habitus in dorsal view (2.3 mm) with locality label. 2.- Aedeagus (1.3 mm) in dorsal view. 3.- Spiculum gastrale (1.0 mm). Photos by Francesco Sacco.