)0' m^ 



457. 

 CLADIUS PILICORNIS. 



Order Hymenoptera. Fam. Tenthredinidce. 



Type of the Genus, Tenthredo difFormis Panz. 

 Cladius Lat., Leach, Le Pel., Curt. — Pteronus Jiir. — Lophyrus 

 Klug. — Tenthredo Panz. 



Antenna inserted near the middle of the face, shorter than the 

 body, tapering, pilose and 9-jointed, generally branched in the 

 males; 1st and 2nd joints small, especially the latter, 3rd the 

 stoutest and rather shorter than the following, curved and hook- 

 ed at the base beneath, producing a branch above, the remainder 

 nearly of equal length, the 4th and 5 th being branched above 

 (1) : simple in the females, 

 Labrum semiorbicular hairy and ciliated (2).- 

 Mandibles rather small curved and acute, notched on the inside, 

 forming an obtuse tooth above the middle, pUose externally to- 

 wards the base (3). 



MaxillcB small, terminated by a suborbicular lobe, with an acute 

 and ciliated one on the inside. Palpi long pilose and 6-jointed, 

 basal joint subglobose, 2nd twice as long, 3rd much longer, at- 

 tenuated from the middle, the remainder equally long but mem- 

 branous and clavate, the terminal joint more strap-shaped (4). 

 Mentum small trapezate, sinuated before. Labium trilobed, 

 centre lobe a little the narrowest and rounded. Palpi rather 

 long, pubescent and hairy, 4-jointed, basal joint the slenderest, 

 subclavate, two following subovate, 4th a little the longest, 

 ovate-conic (5). 

 Head transverse : eyes lateral and prominent : ocelli 3. Thorax sub- 

 orbicular. Abdomen cylindrical, conical at the apex. Wings ample, 

 iridescent, superior having a large stigma ■ one marginal and 4 sub- 

 marginal cells, the basal one small and nearly obliterated, 3rd short 

 and receiving a recurrent nervure in the middle, discoidal cell trian- 

 gular. Legs rather small : thighs short : tibiae simple, spurred only 

 at the apex: tarsi 5 -jointed, basal joint the longest. Claws andipvl- 

 viUi distinct. 

 Larva hairy with 6 pectoral, 12 abdominal and 2 anal feet. 

 Pupa inclosed in a strong glossy cocoon. 



PiLicoRNis Curt. Guide, Gen. 473. 5. 



Male black, shining slightly pubescent, minutely punctured : 

 antennae nearly as long as the body, tapering, thickly clothed 

 with fine short hairs on the under side (fg. 1, a), 2nd joint 

 nearly as large as the 1st, cup-shaped, 3rd joint stout, curved 

 at the base and acute on the upper side at the apex, 4th joint 

 nearly twice as long, slightly clavate, the upper side forming an 

 acute angle at the apex as well as 2 or 3 of the following : 

 mandibles ferruginous at the apex : wings pale yeUowish-fus- 

 cous, the costa and stigma fuscous brown ; nervures piceous : 

 tips of thighs and tibiae whitish ochre, hinder pair with a fuscous 

 line down the inside : tarsi brovmish- ochre. 

 In the Author's Cabinet. 



