269. 

 CERCERIS L^TA. 



Order Hymenoptera. Fam. Crabronidae Lat.^ Leach. 



Type of the Genus, Cerceris Iseta Fab. 



Cerceris Lat., Leach., Sam. — Phllanthus Fab., Jur., Panz. 



AntenncE inserted near the middle of the face, approximating, 

 thickened towards the extremity, 13-jointed in the males, 12- 

 jointed in the females, basal-joint the longest robust, 2nd glo- 

 bose, 3rd slender, longer than the following, which gradually 

 become more robust, terminal joint ovate at the apex (]). 

 Labrum entirely concealed, naked, transverse, with 2 lateral 

 lobes and a central one elevated and emarginate (2). 

 Mandibles remote, crossing, very long, curved, dilated and sinu- 

 ated on the inside, deeply notched and pilose near the base (3). 

 Maxillce with the stalk long and horny, terminated by a large 

 lobe, coriaceous and pilose at the marginj also a large horny 

 lobe on the inside with a larger membranous appendage. Palpi 

 6-jointed, basal joint small, the remainder of equal length, 2nd 

 and 3rd truncated obliquely, 4th and 5th subclavate, 6th the 

 slenderest (4). 



Mentum long, horny, linear, the anterior angles hollowed to re- 

 ceive the Palpi, which are 4-jointed, basal joint long, the re- 

 mainder shorter of equal length, the 2nd and 3rd a little dilated. 

 Lip rather short, membranous pubescent, the central lobe cleft 

 (5c), the lateral ones the narrowest (d). 

 Head transverse, subquadr ate ; face Jlat. Nasus sviall semicircular 

 entire. Eyes elongate ovate. Ocelli 3 in triangle. Thorax oval, 

 narrower than the head. Abdomen elliptic, strangulated at the 

 union of the articulations, 7 -jointed in the males, 6-jointed in the 

 females, the 1st segment nodif or m, terminal joint narrotved,Jlat and 

 truncated. Superior wings with 1 marginal and 4 submarginal 

 cells, the 2nd being petiolated. Legs robust. Tibiae clavate, an- 

 terior producing a long spine at the apex, dilated internally ; pos- 

 terior serrated and spurred. Tarsi 5-jointed, basal joint the longest, 

 anterior producing strong spiny appendages on the outside. Claws 

 simple. Pulvilli distinct {8, afore leg). 



L^TA Fab. Ent. Syst. v. 2. p. 291. n. 10. 



Female. Black, strongly punctured and pubescent. Antennae 

 ferruginous beneath towards the base, excepting the 1st joint. 

 Three yellow spots on the face, 2 on the collar, one on each 

 scapula, the base of the post-scutellum and a spot on each side 

 of the same colour. Abdomen banded with yellow, forming a 

 lunular spot on each side the 1st joint, a large emarginate band 

 on the 2nd ; slender bands on the 3rd and 4th, and a deep oval 

 one on the 5 th. Wings slightly fuscous, the margins darker. 

 Legs bright fulvous, coxae and base of thighs piceous, except in the 

 hinder pair which are dentated beneath and piceous at the apex. 



In the Author's and other Cabinets. 



