617. 

 ATHALIA SPINARUM. 



The Turnep Saw-fly. 



Order Hymenoptera. Fam. Tenth red in idae. 



Type of the Genus, Tenthredo spinarum Fah. 

 Atiialia Lea., St. Farg., Curt. — Hylotoma i^wi. — AUantus Jtir., 

 Klug. — Tenthredo Linn., Fab., Fanz. 



Antenna inserted near the middle of the face, short and clavate, 

 stoutest in the female ; 10-jointed, basal joint chalice-shaped, 

 2nd shorter obovate, 3rd long, slightly clavate, 4th not longer 

 than the 1st, the following decreasing in length, terminal joint 

 the stoutest, ovate, never so long as the 3rd (1). 

 Labrum subquadrate, the anterior margin being considerably 

 produced in a bow, forming rounded angles on each side ; ci- 

 liated and pilose (2). 



Mandibles, one rather smaller tlian the other in the female, the 

 apex forming a curved claw, with a small tooth inside in one 

 (3), merely notched in the other, hairy outside. 

 Maxilla: elongated, terminated by a somewhat ovate leathery 

 lobe, with a long lanceolate internal one very pubescent on the 

 inside. Palpi long pubescent and 6-jointed, basal joint the 

 shortest, the remainder nearly of equal length and clavate, 3rd 

 less attenuated at the base, 6th the slenderest, slightly fusi- 

 form (4). 



Mentum elongate obovate. Palpi short, attached to the anterior 

 angles, 4-jointed, pilose towards the apex, joints nearly equal, 

 1st clavate-truncate, 2nd more ovate, 3rd obovate, 4th a little 

 the longest, ovate-conic, the apex excavated on the inside. Lip 

 large suborbicular, trilobed, centre lobe narrow (5). 

 Head transverse: eyes oval: ocelli 3 in triangle. Thorax globose. 

 Abdomen short subcylindric. Wings, superior with 2 marginal and 

 4 siibmarginal cells. Legs rather short : tibiaj clavate, all having a 

 pair of acute unequal spurs at the apex: tarsi rather long and 5- 

 jointed, the 4 first having appendages at the apex beneath : claws and 

 pulvilli small (8 t hind leg). 

 Larvae with 6 pectoral, 14 abdominal and 2 anal feet. 



Spinarum Fab. — Curt. Guide, Gen. 464. 2. — Centifoliae Panz. 49. 

 18. 



Bright orange; antennae and head black, underside of the 

 former, excepting the base and apex, duU yellow : labrum and 

 palpi yellow : thorax black above, with the collar and a conical 

 space before, the scutel, and a spot on the postscutel reddish - 

 orange : wings and nervures yellowish at the base, costa and 

 stigma dark brown ; tarsi whitish, tips of tibia; and of all the 

 tarsal joints black, the apical one entirely black, as well as the 

 claws and the tip of the ovipositor. In the male the 2 basal 

 joints of the antennae are yellow beneath, and more or less so 

 above. 



In the Author's and other Cabinets. 



