Ceutorhynchus doganlari Gültekin, 2005

Gültekin, Levent, 2005, A new species of the weevil genus Ceutorhynchus Germar from Eastern Mediterranean Turkey (Coleoptera: Curculionidae), Zootaxa 883, pp. 1-5 : 1-4

Ceutorhynchus doganlari Gültekin sp. n. ( Figs. 1–2 )

Material. Holotype (male), 58 male and 35 female paratypes: Turkey: Hatay Prov., 27 km NE of Dörtyol, Üçgoz Yaylasi, 1500 m, 14.VIII.2002 (L. Gültekin), on Alyssum murale . Two male and 2 female paratypes: Turkey: Hatay Prov., 31 km NE of Dörtyol, Tasliufacik Yaylasi, 1650 m, 14.VIII.2002 (L. Gültekin), on Alyssum murale . The holotype and 69 paratypes are deposited in the Entomology Museum of Erzurum, Turkey; 2 paratypes in the Lodos Entomology Museum, Izmir, Turkey; 2 paratypes at the Plant Protection Department, Mustafa Kemal University, Hatay, Turkey; 10 paratypes in the Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia; 6 paratypes in the Enzo Colonnelli collection, Rome, Italy; 2 paratypes in the Museum für Tierkunde, Dresden, Germany; 2 paratypes in the Muséum National d’Histoire Naturelle, Paris, France; 2 paratypes in the Natural History Museum of Copenhagen, Denmark; 2 paratypes in the Natural History Museum, Oslo, Norway.

Description. Male. Rostrum 1.36–1.45 times as long as prothorax, moderately and evenly curved, cylindrical, parallel­sided. Basal half of rostrum with low, matte median carina and 2 weak lateral carinae not reaching the antennal insertion, sometimes these carinae appear as longitudinal wrinkles. Apical half of rostrum shining, punctuation sparse and fine not reaching apex of rostrum. Antennae inserted at 0.51–0.57 times length of rostrum from apex. Funicle 7­segmented; 1st segment robust, 1.5 times as long as 2nd; 3rd segment 0.6 times as long as 2nd; 4th and 5th segments equal length, 6th and 7th transverse. Club medium­long, oval. Eyes rounded, convex. Frons flattened, widened posteriorly.

Prothorax 1.56–1.57 times as wide as long, trapeziform, with acute, medium­sized lateral tubercles. Pronotum weakly convex, transversely depressed close to apical third. Median sulcus wide and shallow, faint on disc, somewhat deeper in apical half. Apical margin raised. Punctuation rounded, coarse and dense, shining but concealed by dense wide ovate white scales.

Elytra 1.14–1.19 times as long as wide, with weakly developed humeral tubercles, parallel­sided in basal half and weakly narrowing in apical one. Apical tubercles truncated, bearing rows of 1–3 acute granules on intervals 3–9. Disc weakly convex, flattened in basal half. Striae moderately deep and broad, intervals about 1.5 times as wide as striae, flat, shining. Wide, ovate wide scales arranged in regular row, along interval, touching each other.

Legs long, slender; femora mutic, weakly swollen in middle of length. Tibiae weakly outcurved and widening apically. Fore tibia non­mucronate, with short apical comb, spines in the comb fine and spaced. Middle and hind tibiae with sharp, thick mucro. First tarsal segment 1.28 times as long as 2nd segment. Third segment 2.3 times as wide as 2nd, its lobes wide. Claw segment widening apically, extending beyond lobes of 3rd segment by 2/ 3 of its length. Claws simple, divergent. Anal ventrite deeply depressed, pygidium weakly convex.

Aedeagus long, penis 1.12 times as long as apophyses, parallel­sided, lamella wide, triangularly narrowing to sharp apex ( Fig. 2 ).

Body ( Fig. 1 ) black, shining, clothed with wide ovate white scales; scales wide oval on elytral intervals, and narrower on head, pronotum and legs. Body length: 1.28–1.63 mm.

Female. Rostrum 1.47–1.55 times as long as pronotum, antennae inserted at 0.53–0.63 length of rostrum from apex. Prothorax 1.55–1.61 times as wide as long. Elytra 1.19–1.21 times as long as wide. All tibiae non­mucronate, anal ventrite with small very shallow depression.

Body length: 1.38–1.68 mm.

Variation. Measurements of the body parts are given in Table 1.

Remarks. The new species is closely related to C. karamani G. Müller, 1921 described from Croatia, and also distributed in Bulgaria, Greece and Macedonia ( Colonnelli, 2004). Ceutorhynchus doganlari clearly differs from the former species in the shape of the aedeagus ( Figs. 2–3 ), and in having the scales on elytral intervals larger and arranged in a single row. In C. karamani the elytral intervals are wider than those in the new species, the scales are smaller and arranged on each interval in 2–3 rows. The size of the new species is on the average smaller, but the body is stouter than that of C. karamani , in particular the elytra are shorter and wider, and the pronotum is more convex. Finally, the median sulcus of the pronotum in C. karamani is wider and complete.

Body parts Range in Average Range in Average

male female

Rostrum length 0.43–0.60 0.51 0.53–0.63 0.55

Rostrum width 0.08–0.10 0.08 0.08–0.10 0.09

Distance from antennal insertion point to rostrum apex 0.51–0.58 0.54 0.57–0.70 0.59 Etymology. The species is named for Professor Miktat Doganlar (Mustafa Kemal University, Hatay, Turkey).

Ecology. Ceutorhynchus doganlari was collected on Alyssum murale Waidst. et Kit. in the Amanos Mountains at the elevations of 1500–1650 m a.s.l. in late summer. Although this is a very warm and dry area in the middle of August, some plants were still flowering in a Pinus forest and the adults were common, feeding on flowers. The closely related C. karamani has been collected on Iberis ? sempervirens L. ( Colonnelli, 2004).

Figures

FIGURES 1 – 3. Ceutorhynchus doganlari Gültekin, sp. n. (1 – 2; holotype) and C. karamani Müller (3): 1 — body outline; 2 – 3 — aedeagus. Scale bar: 0, 25 mm.