Solariola paganettii ( Flach, 1905 )

Baviera, Cosimo, 2015, A review of the genus Solariola Flach, 1908 (Coleoptera: Curculionidae: Entiminae, Peritelini), Zootaxa 3920 (3), pp. 401-430 : 412-415

Solariola paganettii ( Flach, 1905)

Fig. 4 : A–F; Fig. 10–11 : D; Fig. 12 : (4).

Solariola paganettii . Flach, 1905: 318; A. Solari & F. Solari, 1923: 51; Luigioni, 1929: 871; Porta, 1932: 57; Lona, 1937: 233; Osella, 1976: 195; Abbazzi et al., 1989: 321; Abbazzi & Osella, 1992: 302; Abbazzi et al., 1995: 22; Osella & Di Marco 1996: 353, 355; Colonnelli, 2003: 46; Osella et al., 2005; Abbazzi & Maggini, 2009: 58; Magnano & Alonso Zarazaga, 2013: 80, 346.

Type locality. Calabria, Reggio Calabria, Aspromonte Massif.

Diagnosis. A small Solariola of slender appearance (elytra twice longer than their overall width), elytral and pronotal punctuation shallow, femora clubbed and subdentate, anterior tibiae triangularly dilated proximally, narrow rostral furrow, very long scape and club, setae spatulate and recumbent on elytral surface on elytral sides.

Neotype. (here designated). Despite careful searches, it has not been possible to find the Flach types, so it becomes necessary to select a neotype in order to unequivocally define this nominal taxon according to article 75 of the Code (ICZN, 1999). The neotype ♂ is the specimen used by the Solari brothers in their study on this genus ( A. Solari & F. Solari, 1923) with the following labels: Calabria Aspromonte [Leg.] Paganetti 1905 [white printed]; “ Paganettii tipo pene Solari Bol. Soc. E. it. 1923” [white handwritten]; NEOTYPE Baviera des. [red printed]; 4) Solariola paganettii ( Flach, 1905) 2013 Baviera det. (MSNM).

Others Specimens. 5 unsexed specimens with the following labels: Calabria Aspromonte [Leg.] Paganetti 1905 [white printed], Troglorhynchus (Solariella) paganettii Flak, 1905 [white handwritten]; Syntype [red printed] Troglorhynchus (Solariella) paganettii [red handwritten]; Museo di Genova Collezione Dodero Acquisto 2000 [white printed] (MSNG). [As the “ syntype ” label is the same, with the same handwriting used for S. doderoi specimens not described by Flach is reasonable to assume that is not added by this Autor.]; 157 ♂♂ ♀♀. With following labels: Calabria Aspromonte [Leg.] Paganetti 1905 [white printed]; Calabria Aspromonte, Montalto 1750 m a.s.l., 20.VII.2009, Leg. Baviera C.; Calabria Aspromonte, Gambarie 1300 m a.s.l., 19.VI.1987, Leg. Angelini F.; Calabria Aspromonte, Montalto 1850 m a.s.l., 22.X.1966 Leg. Osella G.; Calabria Aspromonte, Gambarie 19.X.1966 Leg. Osella G.; Aspromonte, (RC) S. Eufemia d’Aspromonte, 3.V.1993, Leg. Angelini F.; Calabria, S. Eufemia, Fiumara Crasta, 630 m, 3.V.1993, leg. Angelini & Sabella; (CBA, CBE, GOS, LDI, MNSG, MNSF, MNSM, DEI).

Neotype description. Body yellow-brown. Length 2.77 mm, maximum width of elytra 0.80 mm. Rostrum very slightly longer than wide (width/length ratio 0.9), confusedly and deeply wrinkled, with narrow furrow, subparallel rostral carinae very slightly arched and closest at base. Antennae with scape more than 6 times longer than wide, slightly curved at proximal third, regularly thickened from base to apex, funicle 8 times longer than wide, segment 1 of funicle stlightly clavate, more than twice longer than wide, segment 2 also more than twice longer than wide and shorter than 1, 3 as wide as long, 4 to 6 more or less transverse, 7 slightly wider than long (width/length ratio 1.21); club three-segmented, oval, less than twice longer than wide (width/length ratio 0.57), densely covered with short setae. Prothorax nearly as long as wide (width/length ratio 0.92), strongly convex, widest apicad of middle, disc with large deep punctures merged with smaller shallower ones which bear a long recumbent seta, these pairs of points are more distant from each other on disc than on sides, their interspaces smooth, inclined centripetal setae inserted in smaller punctures are on average less than 3 times longer than the average diameter of the larger points. Elytra twice longer than their overall width (width/length ratio 0.48), oblong elongate, oval, at base narrower than maximum width of prothorax, subparallel sides regularly convergent to apex, scarcely and very regularly curved, maximum width at mid length, narrowing apically. Strial punctures almost square, each bearing a short seta as long as, or slightly less, than average diameter (≤ 0.03 mm) of punctures, the punctures of first two striae more widely separated than others. Interstriae flat, clearly demarcated by points of striae, minutely punctured, points lower in number than those of striae, each bearing a fairly long (averange length 0.07 mm) almost curved laterally flattened and not much raised (angle with elytral surface 5–15°) seta, some of those setae on elytral apex, and also rarely on sides, are spatulate and recumbent on elytral surface. Legs with femora triangularly dilated, subdentate, clubbed beyond middle and narrowing at apex. Aedeagus very long and thin (minimum width/total length ratio 0.16), slightly curved, sclerotisation of sides not broadened on basal half, sides parallel from base to middle, and thereafter parallel widened, with slightly arched apex regularly curved; long lamella triangular, covered on sides, medially strongly raised.

Female genitalia and variabilty. Spermatheca with broadened nodulus and very long slim cornu with sharp apex. Males are more slender than females, and with fore tibiae slightly curved inside.

TL SL SW FL FW CL CW PL PW PW EL EW EW PS ES --- ---

PL EL

♂ neotype 2.73 0.47 0.78 0.51 0.06 0.22 0.13 0.59 0.54 0.91 1.63 0.79 0.48 0.07 0.07 Distribution. Known only from the southern part of Aspromonte Massif ( Fig. 12 ).

Affinities. Morphologically similar to other species of the S. gestroi group mainly differing by subdentate or dentate femora and slender appearance (width/length ratio 0.48).

Ecology. Paganetti-Hummler collected the type series under deep layers of moist beech leaves in Aspromonte (Calabria) between June and July 1895 ( Flach, 1905). Although Flach (1905) said: “Bei St. Eufemia d'Aspromonte (1600 m hoch) fing derselbe unter denselben Verhältnissen im Kastanienwalde eine Anzahl Gestroi und wenige Paganettii ”, no specimens of S. paganetti actually collected from “Santa Eufemia d'Aspromonte” were found in all collections studied. Many specimens were hand collected under stones by Osella in Aspromonte Massif in October ( Osella, 1976).

Figures

FIGURE 4. Solariola paganettii (Flach, 1905) Neotype ♂ from Aspromonte (Reggio Calabria); A: habitus; B: rostrum; C: antennal funicle; D: pronotum; E: side of right elytra; F: aedeagus.

FIGURE 10. Spermatheca shape of Solariola species: A: Solariola gestroi (A. Solari & F. Solari, 1904); B: Solariola hirtula (A. Solari & F. Solari, 1923); C: Solariola fraterna sp. n., D: Solariola paganettii (Flach, 1905); E: Solariola vitalei A. Solari & F. Solari, 1923; F: Solariola pesarinii sp. n.; G: Solariola doderoi A. Solari & F. Solari, 1923; H: Solariola ruffoi Osella & Di Marco, 1996; I: Solariola angelae sp. n..

FIGURE 11. Lateral shape of aedeagus of Solariola species: A: Solariola gestroi (A. Solari & F. Solari, 1904); B: Solariola hirtula (A. Solari & F. Solari, 1923); C: Solariola fraterna sp. n., D: Solariola paganettii (Flach, 1905); E: Solariola vitalei A. Solari & F. Solari, 1923; F: Solariola pesarinii sp. n.; G: Solariola doderoi A. Solari & F. Solari, 1923; H: Solariola ruffoi Osella & Di Marco, 1996; I: Solariola angelae sp. n..

FIGURE 12. Distribution of known species of Solariola: (1) Solariola gestroi (A. Solari & F. Solari, 1904), (2) Solariola hirtula (A. Solari & F. Solari, 1923), (3) Solariola fraterna sp. n., (4) Solariola paganettii (Flach, 1905), (5) Solariola vitalei A. Solari & F. Solari, 1923 (6) Solariola pesarinii sp. n., (7) Solariola doderoi A. Solari & F. Solari, 1923, (8) Solariola ruffoi Osella & Di Marco, 1996, (9) Solariola angelae sp. n.