Cionus colonnellii, Košťál & Caldara, 2019

Košťál, Michael & Caldara, Roberto, 2019, Revision of Palaearctic species of the genus Cionus Clairville (Coleoptera: Curculionidae: Cionini), Zootaxa 4631 (1), pp. 1-144 : 74-76

43. Cionus colonnellii sp. n.

Figs 43 a–f.

http://zoobank.org/ urn:lsid:zoobank.org:act:261A4705-E489-40AA-905A-142102230066

Type locality. Campitello Matese (Matese Mountains, Molise, Italy) .

Type series. Holotype: a completely preserved, 3.83 mm long male labeled “ ITALIA mer. Appennino Meridionale Monti del Matese Mts. Michael Košťál leg. / Campitello Matese env. pr. Isernia 1550 m N 41°26.9’ E 14°24.2’ 28.v.2012 / Verbascum sp. [green label] / HOLOTYPUS Cionus colonnellii sp. n. Košťál & Caldara des. 2016 [printed red label]” ( NMPC) . Paratypes (same designating label but instead of “ HOLOTYPUS ” “ PARATYPUS ”): same labeling as holotype (6 ♂♂, 7 ♀♀ KO; 1 ♂, 1 ♀ CA, 1 ♂, 1 ♀ CMNC; 1 ♀ MTD, 1 ♀ ISZP); “I -IS - Cam- pitello Matese Pendici M. Miletto m 1500 - 26.V.1999 M. Meregalli legit / coll. Meregalli ” (5 ♂♂, 9 ♀♀ ME) ; “ ITALIA mer. 17.6.1991 Mti. del Matese 1650 m Mte. Miletto R.Borovec lgt. / coll. Borovec ” (1 ♀ BO) ; “ Monti del Matese ( CB) CAMPITELLO Matese 12-VI-2018 L. DIOTTI” (1 ♂, 1 ♀ DI) ; “I: Molise – Monti del Matese 41°27’ N 14°23’ E – m 1450 10.VII.2013 – E. Colonnelli / coll. Colonnelli ” (1 ♂, 1 ♀ CI) ; “ MOLISE (Campobasso) M. del Matese m. 1450 04.06. 95 P. Cornacchia” (1 ♂, 2 ♀♀ CO) ; “ Ital. ( IS), Campitello Matese–Pendici M. Miletto 26.V.1999 M. Meregalli lg. / BMNH {E} 2010-26 O. Voříšek / coll. BMNH Voříšek”, one male bears additional label “ Cionus balianii Sol. Voříšek det. 2003” (4 ♂♂, 4 ♀♀ BMNH) ; “ ABRUZZO, L´Aquila Campo Felice m 1500, 24. VIII. 1995 leg. Caldara / coll. Caldara ” (1 ♀ CA) ; “ ABRUZZO ( AQ) Piano di Campo Felice 13-VII- 2014 m 1500 Leg. Aless. Paladini / coll. A. Paladini ” (1 ♂, 1 ♀ PI) ; “ ITALIA mer. 16.6.1991 Mte Gargano 900 m Cagnano

Verano R.Borovec lgt. / coll. Borovec” (1 ♀ BO); “TRENTINO ALTO ADIGE ( BZ) Val Pusteria San Lorenzo di Sebato 4-VIII-2014 Leg. Aless. Paladini m 820 / coll. A, Paladini” (2 ♂♂ PI) ; “ ITALIEN, Südtirol Lana,W, Pawigl , 1150–1350m, 02.08.2015 Leg. A.Kopetz ” (2 ♂♂ NMEG) ; “G. PERINA. Campo de Fiori ( Varese ) 25.VII.1919 / thapsi” (1 ♀ MSNM) ; “ Val Gesso 1400 12-VIII 62 / coll. G. Osella ” (1 ♂, 3 ♀♀ OA) , the male bears additional la- bel “ Cionus n. sp. ??”, one female has dating “ 12-VIII 1962 ”; “ A. Marittime Val Gesso Rif. Soria 25-VII-74 Osella / coll. Osella ” (1 ♀ OA) ; “VIOZENE Alpi Liguri m. 1245 Della Beffa / Olivieri ? ex M. Burlini / Cionus n. sp.? (prope Ganglbaueri ) det. F. Solari / coll. G. Osella ” (1 ♂ OA) ; “ALPES-MARITIMES Tende 20-7-56 G. TEMPÈRE / coll. M.Paris Tempère ”, one female bears additional label “ Cionus clairvillei ( race sans ... [illegible]) A. Hoffmann det.” (1 ♂, 3 ♀♀ MNHN coll. Tempère) ; “E-O. Pyrenäen-Ribes 1990.07.23 1500 m leg. W.Suppantschitsch / Cionus sp. cf. thapsus F. Behne det. 1991 / coll. Behne ” (2 ♀♀ BN) .

Description. Male (holotype). Body stout, subrotund. Head: rostrum moderately stout, medium long (l/ w 4.6, Rl/Pl 1.42), blackish-brown; in lateral view slightly unevenly curved, almost straight in basal and apical part, more sharply curved at antennal insertion, and shortly before it slightly broadened downwards, in basal part of same width, then slightly tapered to apex; in dorsal view moderately broadened to antennal insertion, then parallel to apex, in basal third in cross-section constricted laterally, in apical part slightly flattened dorsoventrally; in basal part very densely, longitudinally punctured to ribbed, in apical part more sparsely punctured, shiny, smooth at apex; in basal part covered with subrecumbent, backwardly oriented, yellowish elongate scales being at antennal insertion thinner and arranged transversally, apical part with suberect, forwardly oriented hair-like scales. Head between eyes very narrow, of slightly more than 0.2 rostrum width at base. Eyes large, rounded, not protruding from head outline. Antennae reddish-brown except darkened club and last 2–3 funicular segments, inserted at 0.7 of rostrum length; funicle of 0.7 scape length, segment 1 wider than segment 2, of 0.8 length of segment 2, segment 1 approximately, segment 2 more than twice as long as wide, segments 3 and 4 slightly longer than wide, segment 5 subglobose; club elongate, 2.4 × as long as wide, approximately as long as funicle, completely covered with recumbent, densely arranged, tiny brownish to yellowish hairs and sparse, erect light sensilla. Pronotum: black, somewhat wider than long (Pl/Pw 1.68), semidensely evenly punctured, punctures small, round, of approximately equal size; covered with evenly densely arranged, forwardly to medially oriented, subrecumbent, elongate (l/w 6–8) yellowish scales; widest at base, conically markedly narrowed to half of its length, then widely concavely constricted to anterior margin, in lateral view in basal half flat on disc, then visibly falling forwards, and shallowly constricted before anterior margin. Prosternum: anterior margin with deep, sharply incised emargination not reaching coxae. Scutellum: triangular, sharp at apex, covered with recumbent, densely arranged, backwardly oriented, yellowish scales similar to those on elytra. Elytra: black to deeply dark brown, in basal 2/3 slightly but noticeably rounded, in apical third broadly evenly rounded, moderately elongate (El/Ew 1.16), widest in mid-length, at base somewhat wider than pronotum (Ew/Pw 1.59), humeri broadly rounded but clearly prominent, without posthumeral impression; convex on disc; interstria 1 from about 1/5 to nearly half of medial length strikingly broadened and shortly before apex broadened in less extent, interstria 2 at same lengths narrowed and very conspicuously constricted laterally encompassing very large dorsal, unequally subrotund and smaller preapical subrotund black tomentous maculae surrounded by yellowish scales of same type as on elytra, interstriae except perimacular areas of equal width, slightly convex; odd interstriae with unevenly, relatively sparsely distributed, small alternating patches of elongate, slightly wider, dense black and yellowish scales; striae very shallow to indistinct, formed by uneven rows of large and deep punctures; entire surface densely covered with subrecumbent, elongate (l/w 6–8), unicolored yellowish scales almost entirely concealing integument. Venter: sparsely covered with subrecumbent, mostly backwardly oriented whitish hairs, not noticeably thicker or widened in shape at ventrite margins; mesosternal process flat, short and broadly concave at apex; metasternum visibly convex, with transversally elongate, densely distributed punctures; ventrite 1 with deep longitudinal median impression, densely transversally punctured to ribbed, ventrite 2 slightly concave, transversally ribbed; ventrite 1 2.2 × as long as ventrite 2, ventrites 1–2 combined 6 × as long as ventrites 3–4 combined, ventrites 3–4 combined of 0.6 length of ventrite 5. Legs: black except brown basal parts of onychia and claws; profemora with small sharp teeth, meso- and metafemora with large sharp triangular teeth; femora, tibiae and tarsi densely covered with subrecumbent, yellowish elongate scales, on femora only very slightly clustered in indistinct transverse bands, onychia with subrecumbent, thin, whitish long hairs; onychia of anterior legs of normal length, about as long as tarsomeres 1–3 combined, protarsal tarsomere 3 as long as wide; protarsal lateral claws thin, by 1/2 shorter than medial ones, meso- and metatarsal medial claws by 1/3 shorter than their pair-claws. Penis: Figs 43 d–f, its body subparallel, rounded at apex.

Female. Rostrum slightly longer (Rl/Pl 1.5), of same shape as in male but antennal insertion closer to rostrum mid-length, at about 0.6 of rostrum length. Ventrites 1 and 2 without impression. Protarsal onychia of anterior legs as in male, claws equally long.

Variability. Length: ♂♂ 3.81–4.20 mm, ♀♀ 3.95–4.48 mm. This species does not show much variability. The dorsal elytral macula may vary from large to strikingly large, especially in females. When very large, the dorsal macula is often irregularly shaped, and drawn out backwardly.

Diagnosis. This species is characterised by nearly completely concealed elytral integument, not elongate male onychia, uniform yellowish elongate scales on pronotum and elytra, large and often irregularly shaped dorsal elytral macula, deep impression on first two ventrites, and penis shape.

Comparative notes. Cionus colonnellii is most closely related to C. ganglbaueri , from which it differs mainly by an unusually large dorsal macula, mostly bright yellowish and markedly elongate scales on elytra, smaller scale patches on odd interstriae, and especially penis shape.

Biological notes. The first author collected some specimens of the type-series in the Matese Mountains on Verbascum sp.

Distribution. Spain (Eastern Pyrenees), France (Alpes-Maritimes), Italy (Central Apennines, Trentino Alto Adige, Lombardia).

Etymology. The species is named after an eminent curculionidologist and common friend of both authors, Enzo Colonnelli, who also collected the species.

Non-type specimens examined. None.

Figures

FIGURES 43–44. FIGURE 43. Cionus colonnellii sp. n. a: body in dorsal view (male), b: body in lateral view (male), c: rostrum in lateral view (female), d: penis in ventral view, e: penis in lateral view, f: apex of penis in dorsal view. Not to scale. FIGURE 44. Cionus rossicus sp. n. a: body in dorsal view (male), b: body in lateral view (male), c: rostrum in lateral view (female), d: penis in ventral view, e: penis in lateral view, f: apex of penis in dorsal view. Not to scale.