93. 

 CLAVELLARIA MARGINATA. 



Order Hymenoptera. Fam. Tenthrc'dinidae Lot., Leach. 



Type of the Genus Tcnthredo Amcrin<e Linn. 

 CbAVELLAniA Lamarck, Leach. Cimbex Olb:., Fab., Lat. Tcnthredo 

 Linn., Fab., Jur., Panz. 



AntenncE inserted between the eyes, long:er in the male than fe- 

 male, clavate, j-jointed, 1st joint somewlmt globose, with a tuft 

 of long hairs, 2nd transverse- hairy, 3rd very long slender, 4lh 

 short, ;>th forming a club as long as the 3rd joint, covered with 

 minute t'uberculated glands (f. 1). 



Labrum large, semi-transparent, scarcely hairv, rounded, nar- 

 rowed at the base (2). 



Mandibles exserted, very long in the male, slender, acute, with 2 

 large and sometimes smaller teetii on the internal edge (3). 

 M axil lie hiiir)-, composed of J membranaceous lobes, the superior 

 one somewhat trigonate, the internal one more lanceolate. Palpi 

 considerably longer than the maxillie, composed of G joints of 

 nearly equal length, 3 tir^t joints robust. 2 following somewhat 

 hatchet-shapt'd, rerniin;il j<iinf rl.ivsitr (1). 



Mentinn pilose, oblong, slightly dilated before (J a). Palpi a 

 little longer than the lip, 1 -jointed, 3 first joints of equal length, 

 the 3rd rather morcrol)ust, terminal joint the longest, cvlindric, 

 not more slender than the others (b). Lip membranaceous, 

 3-Iobed, the centre one linear, the otiiers considerably longer, 

 narrow, attenuated towards the base (c). 

 Clypeus broad, emar^inatv, numhrnnaceous (I a, front view of head of 

 male). Ocelli 3. Abdomen sessile, viltose, linear in the males, some- 

 what dilated in the females, \st segment scarcely emar^inate above. 

 Oviduct not exserted, composed of 2 lamelUe that are serrated. Su- 

 perior wings with 2 marginal and 3 submarginal crlU. Thighs 

 unarmed, A posterior incrassated in the males. T'\b'ix with siphon- 

 formed s-purs, obtuse at the apex. Tarsi j -jointed, with the penulti- 

 mate joint a little shorter than the antepenultimate, 4 Jirst joints with 

 small membranaceous appendages slightly angulated beneath. Claws 

 simple (8 afore leg). Larva with membranaceous feet. 



Maroinata Linn. Syst. Nat. 2. 929. 2. Fab. Em. Syst. t. 2. p. IOC. n. 6. 

 Fern : black. Head and thorax pubescent. Clypeus pale vellow. 

 Club o4 the anteniu-e except at the base ferruginous. Thorax 

 and basal joint of abdomen green inclining to purple. Basal 

 joint of abdomen edged with yellow, the remaining joints except 

 the 2nd and 3rd margined with ochraceous, the band on the 4th 

 joint being interrupted in the middle. Tibiie and tarsi pale fer- 

 ruginous. Wings stained yellowish, the costal and one of the 

 discoidal cells being most intense, nerves and stigma ferrugi- 

 nous ; posterior margins tinged pale brown. 

 In the Cabinets of the British Museum and Mr. Stephens. 



