Larinus berti sp. n. (Coleoptera, Curculionidae, Lixinae) from North Africa.

A new species, Larinus berti sp. n. is described from Morocco and assigned to subgenus Cryphopus Petri, 1907 (Curculionidae: Lixinae; Lixini). Diagnostic characters of the new species are large size, elongate-ovate body, bisulcate sub-quadrangular rostrum, triangularly raised dorsum of rostrum, flat subgena and submentum, Y-shaped apodeme of sternite VIII of female and thin nodulus of spermatheca.


Introduction
The weevil genus Larinus Dejean, 1821 is considered a beneficial group in the fight against invasive thistles of the tribe Cardueae (Asteraceae) (Ter-Minasian 1967;Zwölfer et al. 1971;Gültekin 2006;Gültekin et al. 2008). According to the world catalogue by Alonso-Zarazaga and Lyal (1999), this genus is divided into four subgenera: Cryphopus Petri, 1907, Larinus, Larinomesius Reitter, 1924and Phyllonomeus Gistel, 1856. In a recently prepared catalogue by Gültekin and Fremuth (2013), Larinus approximately consists of 100 species in the Palaearctic Region, with its highest species richness in the Mediterranean. Five species are assigned to Cryphopus and their distribution is confined to the Western Mediterranean (Gültekin and Fremuth 2013). Its diagnostic characters are the expanded outer apical angle of the protibia and the unequal length of the tarsal claws. This paper deals with the description of a new species from this subgenus.

Materials and methods
Measurements were taken using an ocular micrometer attached to a Leica MZ75 stereo microscope and are defined as follows: body length: from anterior margin of eye to posterior margin of elytra; rostrum length: from apex of rostrum to anterior margin of eye in side view; prothorax length: from anterior margin to the posterior margin of scutellar lobe along midline. For the morphological study, dry adults were placed in lukewarm clean water overnight and their genitalia were dissected. Parts with muscles and other tissues were stored in 10% KOH overnight, cleaned with distilled water and 70% ethanol. Genitalia were observed and photographed in glycerine under a stereo microscope, and kept in glycerine microvials or allowed to dry and glued onto cards under the pinned specimens from which they were dissected. Photographs were taken with a Leica DFC 420 digital camera attached to the stereo microscope using LeicaLAS software for montage. The digital images were then imported into Adobe Photoshop 8.0 and CorelDRAW X4 for labelling and plate composition.

MNCN
The new species is related to Larinus griseus Capiomont, 1874 but the latter clearly differs in the following characters: apodeme of sternite VIII of female is not Y-shaped, the subgena of rostrum is depressed, the submentum is distinctly raised at apex, and the central keel of dorsum is tricarinate.
Body elongate-ovate (Figs 1-2). Vestiture. Ventral and lateral surface of head, dorsum of rostrum, pronotum and elytra with very short sparse greyish piliform scales; on elytra whitish grey pubescence forming small patches especially along striae; submentum, prosternum, medial part of metasternum, legs and abdominal ventrites with somewhat longer, denser and partly suberect hair-like pubescence; coxae, sides of metasternum and ventrite I, metanepisternum, mes-and metepimeron with bifid scales; mesosternum and mesanepisternum with 4-and 5-fid scales; scales on posterior part of metanepisternum and metepimeron very dense. Apical margin of prothorax with short dense piliform scales, longer on prosternum and ocular lobes. Tibial praemucro with a tuft of setae projecting towards uncus.
Head spherical, hind ventral margin with a small notch, vertex weakly visible, frons flat in female, slightly convex in male, frontal pit small, superficial, rounded. Eyes elliptical, weakly convex, ventral half narrower than dorsal. Rostrum (Fig. 3) sub-quadrangular in section, in dorsal view parallel-sided, weakly widened at apical third, with two deep longitudinal sulci reaching apical fourth and convergent caudad, area between sulci distinctly raised, with median keel at apical third, a transversely curved ridge present immediately before epistomal area, dorsolateral margins of rostrum obtuse, rostral pit invisible in female, distinct in male on median keel, minutely and coarsely punctured (as well as forehead); in side view straight. Scrobes with ventral margin partly visible dorsally. Antenna (Fig. 4) inserted about 0.30× from apex of rostrum in male, 0.40× in female. Scape slightly shorter than funicle, dorsoventrally depressed, weakly curved at middle, abruptly widened at apex, wider than desmomere 1, desmomeres 1-2 subconical, desmomere 1 about 1.30× as long as desmomere 2, desmomere 3 short, subisodiametric, about 0.65× as long as desmomere 2, desmomeres 4-7 gradually widening, desmomere 7 widest; club moderately elongate with acute apex, about 1.70× as long as wide.
Prothorax in dorsal view sub-trapezoidal, base moderately and triangularly arched towards scutellum, lateral margins of prothorax gradually and gently converging from base to apical half, rather strongly rounded apicad of it and then abruptly constricted in a short collar at apical 1/6; anterior margin very gently emarginate on dorsal part, evenly curved towards slightly developed postocular lobes; prosternum with anterior margin moderately emarginate. Pronotal surface convex, with dense, minute punctures, somewhat larger punctures scattered sparsely and partly confluent on prescutellar area.
Scutellum small and not clearly visible. Elytra subparallel-sided in basal 2/3, gradually and roundly narrowed towards apex, constricted before mid-length; humeral calli moderately developed, preapical prominences distinct and located at end of intervals 4-7; interstriae flat, subequal in width on disc, narrower caudad, about 5× as wide as a stria on disc, interstria 10 wider than others in basal third, interstria 11 sinuate, weakly curved towards metanepister- num; striae mostly formed by rounded and separate punctures, these partly confluent along basal part and on posterior declivity, stria 10 sinuate and deeply sulciform.
Variation. Size variation is presented above under the Measurements section. A detailed variation cannot be presented because there are only two specimens available, and no further specimens have been traced in the rich Moroccan collections of the MNHN (Paris) and MNCN (Madrid). The female specimen shows a partly worn out vestiture, especially on elytra.
Etymology. The new species is named after our good friend Bert Viklund (The Swedish Museum of Natural History, Stockholm).

Key to the species of subgenus Cryphopus
The known species of the subgenus Cryphopus can be separated as follows: