Urometopus angelinii, Colonnelli, 2011

Colonnelli, Enzo, 2011, Notes on the taxonomy of Urometopus with description of a new species from northern Turkey (Coleoptera: Curculionidae), Acta Entomologica Musei Nationalis Pragae 51 (2), pp. 675-686 : 678-681

Urometopus angelinii sp. nov.

( Figs. 1–2 , 5–8, 11–12 , 15 ) Type material. HOLOTYPE: J, TURKEY: ANATOLIA: ORDU PROVINCE: ‘ Türkiye (Ordu) / Akkuş / 8.VI.2009 - F. Angelini leg.’ (MSNG). PARATYPES: 4 ♀♀, the same data as holotype (2 FAFI, 1 ECRI, 1 NMPC).

Diagnosis. Closely related to U. imereticus ( Reitter, 1888) , U. asiaticus ( Formánek, 1910) and U. ferrugineus (Formánek, 1904) ; easily differentiated from the first two species by its frons not continuing the profile of rostrum, and from the last by the pronotal punctures much smaller than those of elytral striae.

Description. Male (holotype). Length 2.50 mm. Derm red-brown, head and pronotum much darker than elytra, antennae a little darker than legs. Elytra, pronotum and head sparsely covered by golden, almost recumbent setae, pointing backward on head and elytra and forward on pronotum. Raised shorter setae on antennae, tibiae, and tarsi. Rostrum 1.3 times wider than long, with almost straight sides. Epifrons striate, at the narrowest point about as wide as half of rostrum at the same level, with rather deep longitudinal groove. Epistome V-shaped and separated from the frons by its lack of striae and punctures. Scrobes a little enlarged, entirely visible in dorsal view; in lateral view dorsal border almost coincident with the dorsal surface of rostrum, ventral margin directed towards the middle of the eye. Eyes small, convex. Head longitudinally striate, space between eyes twice as wide as that between antennal insertions, in profile dorsally separated from rostrum by a depression. Antennae quite robust, scape curved, slightly thickening towards apex, regularly curved; funicular segment about 1.5 times longer and slightly wider than 2, second 1.5 times as long as wide, antennomeres 3–5 not or slightly transverse, 6 and 7 strongly transverse, segments 3 and 5 a little smaller than 4 and 6. Club fusiform, slightly longer than the three preceding segments. Prothorax 1.2 times wider than long, sides rounded, widest at basal 3/5, convex in lateral view; anterior margin hardly narrower than basal one, disc with fine, coarse punctures somewhat confluent in illvisible rugosities near base. Scutellum broadly triangular. Elytra elongate-oval, 1.47 times longer than wide, about 1.7 times as wide as pronotum; intervals smooth, almost flat, about twice as wide as striae which are formed by punctures much larger that those on pronotum. Femora strongly clubbed, edentate. Tibiae quite robust, external margin almost straight up to near apex which is externally dilated, internal margin sinuate, all with an apical internal mucro; apex with a fringe of fine yellow setae. Tarsi short, first segment only a little longer than wide, second strongly transverse, third bilobed and as long as wide, fourth projecting from third by a trifle less the length of third. Claws fused in basal half. Habitus and rostrum: Figs. 1 , 5, 7 . Aedeagus: Figs. 11, 12 .

Female (paratypes). Elytra of females are less elongate-oval, only 1.23 times longer than wide and around 1.86 times wider than pronotum at its widest point; the inner margin of the longer tibiae is less sinuate, and the apical mucro on them extremely minute. Their colour can be slightly paler than that of the holotype. Length: 2.53–3.60 mm. Habitus and rostrum: Figs. 2 , 6, 8 . Female genitalia have never been used as differential features and are thus not depicted.

Differential diagnosis. Urometopus imereticus ( Reitter, 1888) from Georgia, U. asiaticus ( Formánek, 1910) from Armenia, and U. ferrugineus (Formánek, 1904) from northwestern Iran are the only species of the genus lacking erect setae like U. angelinii sp. nov. The new species cannot be confused with U. imereticus and U. asiaticus since the outline of frons of these species does not form in profile an obtuse angle like in U. angelinii sp. nov. The second funicular segment of U. imereticus is as long as the first, and its aedeagus is wider and with a rather sharp apex which in addition is curved upwards ( FORMÁNEK 1904a), whereas the prothorax of U. asiaticus should be more than 1.3 times wider than long according to the description ( FORMÁNEK 1910). On the other hand, U. ferrugineus is immediately distinct from the new species already by its pronotal punctures very large, almost as large as those forming the elytral striae, by the uniform reddish colour, the rostrum as long as wide, strongly curved and forming a less obtuse angle with frons, and by aedeagus much more enlarged basally ( FORMÁNEK 1904b). All the remaining 14 species of Urometopus have a double clothing of recumbent and erect setae at least on elytral declivity, and cannot be mistaken for U. angelinii sp. nov.

Etymology. The new species is named after its collector Fernando Angelini as a sign of acknowledgement and friendship.

Habitat. The five specimens were sifted from the leaf-litter of a Fagus forest.

Distribution. Turkey, north Anatolia (Ordu province). For the distribution of Urometopus in Turkey see Fig. 15 .

Figures

Figs. 1–4. Habitus. 1–2 – Urometopus angelinii sp. nov.: 1 – male holotype; 2 – female paratype.3–4 – U.anatolicus Smreczyński, 1977: 3 – male from Ladik-Kiliçarsian pass, Samsun province, Turkey; 4 – female from Abant lake, Bolu province, Turkey. Scale bar: 1 mm.

Figs. 5–14. 5–8 – Urometopus angelinii sp. nov. (5 – male holotype, lateral view; 6 – female paratype, lateral wiew; 7 – head and rostrum, dorsal view; 8 – same, lateral view). 9–10 – antennal funicle (9 – U. anatolicus Smreczyński, 1977 from Akkuş, Ordu province, Turkey; 10 – U. korgei Smreczyński, 1970 from, Hatip, Sinop province, Turkey). 11–12 – U. angelinii sp. nov., aedeagus, holotype (11 – dorsal view, 12 – lateral view). 13–14 – U. anatolicus from Ladik-Kiliçarsian pass, Samsung province, Turkey, aedeagus (13 – dorsal view; 14 – lateral view).Scale bar: 1.8 mm (Figs. 5–6), 0.48 mm (Figs. 7–8); 0.42 mm (Figs. 9–10); 0.55 mm (Figs. 11–14).

Fig. 15. Distribution of Urometopus species in Turkey. Circle = U. angelinii sp. nov.; rhomb = U. anatolicus Smreczyński, 1977; squares = U. korgei Smreczyński, 1970.