Larinus (Larinomesius) obtusus Gyllenhal 1835

• Main Authors: Gosik, Rafał, Skuhrovec, Jiří
• Format: Other/Unknown Material
• Language: unknown
• Published: 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Coleoptera; Curculionidae; Larinus; Larinus obtusus; Seta; Centaurea phrygia
• Online Access: https://zenodo.org/record/5697766; https://doi.org/10.5281/zenodo.5697766

Larinus (Larinomesius) obtusus Gyllenhal, 1835 Material. (11 larvae of different larval instars, 7 pupae), collected in flower heads of spotted knapweed (Centaurea stoebe L.) growing in psammophilous grass communities: POLAND centr. or., Wołczyny ad Włodawa, UTM nets: FC 80, 28.viii. 2008 (4 larvae, 3 pupae); Stare Stulno ad Włodawa, UTM nets: FC 80, 28.viii. 2008 (3 larvae, 1 pupa), all R. Gosik leg; collected in flower heads of wig knapweed (Centaurea phrygia L.) growing in meadow under mountains: ROMANIA, prov. Alba, Rimetea, 33 km S of Cluj, Bachufer, N 46 ° 28 ' 57 ", E 23 ° 34 ' 64 ", 480 m a.s.l., 21.vii. 2008 (4 larvae, 3 pupae), J. Skuhrovec leg. Differential diagnosis. Mature larva. Endocarina present (x L. pollinis) (Figs. 1, 2). Des 4 close to des 3 (x L. turbinatus) (Figs. 1, 2). Less than 15 setae on pronotum (x L. pollinis) (Fig. 9). Spiracular area in meso- and metathoax with one only seta (x L. pollinis, L. sturnus, L. turbinatus) (Fig. 9). Abdominal segments I-VII without prs, only 5 pds, and 1 dpls (x L. pollinis, L. sturnus, L. turbinatus) (Fig. 10). Setae on thorax and abdomen long (Figs. 9, 10) (x L. turbinatus). Pupa. Sas on head, no protuberance with a shape such as horns (x L. sturnus) (Figs. 12, 13). Less than 15 setae on pronotum (x L. pollinis) (Fig. 13). Seta 1 on abdominal segment I. near the anterior margin, remaining 7 setae close to the posterior margin (x L. pollinis, L. turbinatus) (Fig. 13). Pc very short (x L. sturnus, L. turbinatus) (Figs. 12, 14). Description of mature larva. COLORATION. Head light brown or brown. All thoracic and abdominal segments white or gray. Cuticle minutely spiculated. HEAD CAPSULE AND MOUTH PARTS. Head width: 1.0-1.3 mm (mean 1.1 mm), suboval, oblate laterally, endocarinal line present, reaches middle of the frons. Des 1 and des 2 located in the central part of epicranium, des 3 near to frontal suture, des 4 and des 5 located anterolaterad, equal in length (Figs. 1, 2). Fs 1, fs 2 and fs 3 placed medially, fs 4 and fs 5 located laterally, close to ...