Solariola gestroi
Creators: name: Bello', Cesare
name: Osella, Giuseppe
name: Baviera, Cosimo
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Solariola
Solariola gestroi

description: Solariola gestroi (A. Solari & F. Solari, 1904)
(Figs 16, 16a, 16b, 16c, 16d, 16e, 16 ’, 16’a, 16’b, 16’c, 16’d, 16’e, 45a, 62, 62’, 105, 148, 191)
Otiorhynchus (Troglorhynchus) gestroi A. Solari & F. Solari, 1904: 169–171.
Troglorhynchus (Solariella) gestroi: Flach, 1905 (note): 318; Ragusa, 1906 (note): 62; Normand, 1908 (fauna): 227.
Troglorhynchus (Solariola) gestroi: Hoffmann, 1950 (catalogue): 151.
Solariola gestroi: A. Solari & F. Solari, 1923 (revision): 51–57; Luigioni, 1929 (catalogue): 871; Porta, 1932 (catalogue): 57; Winkler, 1932 (catalogue): 1432; Lona, 1937 (catalogue): 233; Osella, 1976: 194 (fauna); Osella, 1979 (fauna): 312; Abbazzi et al., 1989 (fauna): 321; Abbazzi & Osella, 1992 (catalogue): 302; Abbazzi et al., 1995 (catalogue): 22; Osella & Di Marco 1996 (fauna): 355; Colonnelli, 2003 (checklist): 46; Osella et al., 2005 (checklist); Abbazzi & Maggini, 2009 (catalogue): 58; Magnano & Alonso Zarazaga, 2013 (catalogue): 346; Baviera, 2015: 401–428 (revision); Morrone & Hlaváč, 2017 (checklist): 50; Pierotti, 2017a (catalogue): 344.
Type locality. Campania, Vallo della Lucania, S. Biase di Ceraso (Fig. 242).
Diagnosis. A small size Solariola (TL: 2.6 0–2.72 mm; BL: 2.10–2.20 mm) belonging to the gestroi group with more robust body shape. Within the species group, it is recognisable by oblong-oval elytra with badly defined punctures and interstriae with elongate, recumbent setae. Rostrum short (RL: 0.40, RW: 0.30 RL/RW: 1.33–1.33). Mesorostrum carinae just divergent to sides. Forehead convex (FW/MW: 2.00–2.00). Submentum and laterally mesorostrum with short, whitish-yellowish pappolepida. Antennae long and thin (SL: 0.50– 0.50 mm, FL: 0.75– 0.75 mm, SL/FL: 0.67–0.67). Pronotum generally as long as wide (PL: 0.57–0.60 mm, PW: 0.57–0.58 mm, PL/PW: 1.00–1.03) without echinopappolepida at base. Oblong-oval elytra, dorsally vaulted (EL: 1.52–1.57 mm, EW: 0.83– 0.85 mm, EL/EW: 1.79–1.89).
Material examined. Holotype male with following labels: [genitalia in DHMF] [transparent label] / S[an] Biase, Ceraso, 20. V. 1902, Solari [w, hw] / Typus [w, p] (on the back) Troglorhynchus Gestroi Solari, Bull. [ettino] Soc.[ietà] E.[ntomologica] It.[aliana] 1923 [w, hw] / Solariola gestroi (Solari, 1903) HOLOTYPUS det. Baviera 2014 [r, p] / Solariola gestroi (Solari, 1903) Holotype, det. Bellò, Osella & Baviera, 2018 [r, p] / esemplare fotografato by Francesco Sacco [y, p] (MSNM).
Paratypes. Two females, with the following labels: 1) S. Biase di Ceraso, 20.V.1902 / [leg.] Solari [w, hw, p] / coTypus [w, p] / Troglorhynchus Gestroi Solari Typus! [w, hw] / PARATYPUS Ot. Troglorhynchus Gestroi A. & F. Solari, 1903 [r, p, hw] / Museo Genova Coll. A. Dodero (acquisto 2000) [w, p] / Solariola gestroi (A. & F. Solari, 1903) PARATYPUS [det. Baviera 2014] [r, p] (MSNG); 2) S[an] Biase, Ceraso, 20. V. 1902, Solari [w, hw] / Typus [w, p] (on the back) Troglorhynchus Gestroi Solari, Bull. [ettino] Soc.[ietà] E.[ntomologica] It.[aliana] 1923 [w, hw] / Solariola gestroi (Solari, 1903) PARATYPUS [det. Baviera 2014] [r, p] / Collezione Cesare Bellò, Castelfranco Veneto [g, p] / esemplare fotografato by Francesco Sacco [y, p] (CBE).
Additional material examined (sixty-nine males and females) with the following data: S. Biase di Ceraso, 7.XI.1902, [Leg.] Bensa; Vallo Lucano, [leg.] Solari; S. Biase, Vallo Lucano, 12.VI.1904, [leg.] Solari; same data, V.1904; same data; 8.VI.1904; same data, VI.1904; same data, 10.VI.1904; same data, 15.VI.1904; same data 25.V.1907; Vallo Lucano, Novi Velia, 29.IV.1966, leg. Sbordoni; Salerno Vallo della Lucania Novi Velia, 31.X.2011, Leg. Bellò C.; Salerno, Vallo Lucano, Ceraso, San Biase, 660m, vaglio Quercus ilex + Castanea / Ceraso loc. San Biase, 40°10’37.6’’N 15°16’45.0’’E, 30.IV.2018, Bellò & Chemello leg. (CBA, CBE, GOS, MCZR, MSNM, MSNG).
Holotype redescription. Male. See Figs 16, 16a, 16b, 16c, 16d, 16e. Oval-elongate body (T L: 2.72 mm, BL: 2.20 mm). Brownish cuticle.
Rostrum short (RL: 0.40 mm, RW: 0.30 mm, RL/RW: 1.33), conical to sides with pterygium expanded. Epistome absent. Mesorostrum carinae just divergent to sides. Submentum with short, whitish-yellowish pappolepida, also partially visible around mesorostrum. Interocular pit visible. Forehead convex (FW/MW: 2.00). Vestigial eyes flat and just visible.
Antennae thin and elongate (SL: 0.50 mm, FL: 0.75 mm, SL/FL: 0.67); AS ratio: 6.5.4.3.3.3.4.11. Scape clubbed, slightly more robust than funicle, curved at proximal third and progressively thickening towards apex. Funicle long and thin; all segments with elongate and thin setae. Club three-segmented, fusiform, in length twice the width, densely covered by thin setae.
Pronotum nearly as long as wide (PL: 0.60 mm, PW: 0.58 mm, PL/PW: 1.03), wider in the middle and without echinopappolepida at base. Scutellum visible.
Elytra oval elongate to sides, dorsally vaulted (EL: 1.57 mm, EW: 0.83 mm, EL/EW: 1.89), wider at middle with convex suture. Humeri obliquely rounded. Striae with 12–13 badly defined punctures, badly catenulate, not deep. Interstriae convex with thin and elongate setae recumbent. Elytral declivity> 60 degrees.
Legs short and robust with femora clubbed. Protibia with seven acute spines on inner edge and an evident mucro on inner apical angle. Protibia sinuous on inner edge and straight in side view. Metatibia and mesotibia straight in side view. All tibia with noticeable apical comb. Tarsal segment 1 short, conical; segment 2 short and transverse; segment 3 very bilobed; all segments with thin golden setae. Onychium curved, robust and short with one short claw.
Male genitalia. See Figs: dorsal shape aedeagus Fig. 62; apex of penis Fig. 62 ’; IX sternite Fig. 105.
Female genitalia. See Figs: spermatheca Fig. 148; VIII sternite Fig. 191.
Sexual dimorphism. Males can usually be recognized by their smaller size, slender appearance, more rounded humeri, legs stronger with a more noticeable apical mucro, and ventrites 1 and 2 slightly hollowed.
Paratypes variability. Paratypes, sexual dimorphism excluded, are similar to the holotype but differs in size.
Distribution. See Figs. 222, 222a. Italian endemic. Known from Salerno, Vallo Lucano, surroundings of San Biase of Ceraso type locality at 400–700 meters of elevation.
Ecology and Phenology. This species was described from three specimens collected in Castanea sativa Miller forest under leaves (Solari & Solari, 1904). Adults are found in late spring or early summer, collected by sifting leaf litter either (Castanea or Quercus) or under deep stones (Osella, 1976).
Main soil type. Chromic Cambisol (European Soil Data Centre; Panagos et al. 2012).
Reproduction. Amphigonic.
Associated species. Sympatric with Heteromeira curvisetis Pierotti, 2011 and Aparopion suturidens Reitter, 1891.
description: Published as part of Bello', Cesare, Osella, Giuseppe & Baviera, Cosimo, 2019, A taxonomic monograph of the genus Solariola Flach, 1908 (Coleoptera: Curculionidae: Entiminae), pp. 1-261 in Zootaxa 4676 (1) on pages 97-104, DOI: 10.11646/zootaxa.4676.1.1, http://zenodo.org/record/3468945