7- 1^30 

 292. 



MONONYCHUS PSEUDACORI. 



Order Coleoptera. Fam. Curculionidae Lat,, Leach. 



Type of the Genus, Rhynchsenus Pseudacori Fab. 



MoNONYCHUS Schupp., Germ., Schon. — Rhynchsenus Fab., Oliv. — 

 Falciger Dej. 



AntenncE inserted on each side the rostrum a little before the 

 middle, rather short slender pubescent and geniculated j 12- 

 jointed, basal joint not very long, clavate, 2nd pear-shaped, 

 rather longer and more robust than the 6 following, the 3rd very 

 slender, the 5 following slightly increasing in size, the 9th and 

 remainder forming a fusiform-oval club, the apical joint being 

 very minute (6). 

 Labrum none. 



Mandibles forming 2 large teeth at the apex and a small one on 

 the inside towards the base (2). 



MaxillcB short forming one large ciliated lobe. Palpi extending 

 beyond the apex of the lobe, robust, composed of 3 subquadrate 

 joints and terminated by a minute one (3). 

 Mentum elongated, narrowed at the base. Lip ovate, coriaceous 

 at the base, membranous at the apex, producing 2 bristles on 

 each side. Palpi inserted near the middle, short, triarticulate, 

 basal joint subquadrate furnished with 2 bristles, 2nd short cup- 

 shaped, 3rd very minute (4). 

 Rostrum elongated, slightly arcuated and cylindrical, bent close to the 

 sternum when at rest. Eyes lateral, rotundate, not prominent (7). 

 Thorax triangular-truncate, posterior margin convex. Scutellum 

 triangular and acuminated. Elytra shorter than the Abdomen, 

 subquadrate and compressed behind the scutellum. Wings ample. 

 Thighs clavate with a slight notch beneath, near the apex. Tibiae 

 somewhat compressed, emarginate externally towards the apex. Tarsi 

 spongy beneath, 4-jointed, Island 2ndjoints of equal size, semi- ovate, 

 3rd forming two perfect lobes, 4th slender, subclavate, with a simple 

 Claw to each foot (5). 



PsEUDAcoKi Fab. Ent. Syst. v. 1. pars 2. p. 408. n. 61. 



Black, slightly glossy, punctured all over. Head hollowed be- 

 tween the eyes, with a few ferruginous scales at the base of the 

 rostrum, the antennae, excepting the club, of the same colour. 

 Thorax ochreous on the sides, with a large channel down the 

 back. Elytra with an ochreous oblong spot behind the scutel- 

 lum, 10 clean-cut punctured striae on each, 2 of them passing 

 round a protuberance near the apex. Underside clothed with 

 yellowish shining scales ; the Tarsi beneath ochreous. 

 In the Author's Cabinet. 



