41. 

 CilMBEX DECEM-MACULATA. 



Ordeh Hj'ineiioptfra. Tam. Tentliredinidse Lat., Leach, 



Type of fhe Genus Tenthredo europaea Leach. 

 CiMBEX Oliv., Fab., Lat., Leach. Tenthredo Linn., Jur. 



Antennce inserted between the eyes, clavate, 6-jointed, first joint 

 cup-shaped, second very short, third very long, fourth and fifth 

 clavate- truncate, sixth oblong, club-shaped, with a transverse 

 suture. (1.) 



Luhrum small, oblong, rounded at the apex, hairy. (2.) 

 Mandibles exscrted, unequal, robust, acute, with one or two 

 irregular teeth on the inside. (3.) 



Maxilla membranaceous at the apex, with a large hairy lobe near 

 the base of the palpi, extending towards the apex. 

 Palpi irregular, extending a little beyond the maxillae, 6-jointed, 

 third joint the longest, fourth somewhat clavate, sixth small, 

 ovate. (4.) 



Mentum oblong, dilated anteriorly (5. a.) : Palpi scarcely longer 

 than the lip, 4-jointed, gradually increasing in size to the third 

 joint, terminal joint small (b.) : Lip membranaceous, with a few 

 hairs above, three-lobed, the centre one narrow, external lobes 

 somewhat hemispherical, (c.) 

 Clypeus b7'oad, emarginate. Ocelli 3. Abdomen sessile, cylindric in 

 the males, somewhat ovate in the females, first segment especially of 

 the males deeply emarginate above. Oviduct not exserted, composed 

 of two Imnellce, which are serrated. Superior wings with 2 marginal 

 and 3 submarginal cells. Thighs 4 posterior unarmed, very thick in 

 the males. Tibiae terminated by syphon-formed spurs, obtuse at the 

 apex. Tarsi with the penultimate joint a little shorter than the an- 

 tepenultimate, four first joints with membranaceous appendages (8. « 

 fore leg) ; the basal joint of the 4 posterior tarsi of the males produced 

 into a spine beneath.(%. a.) 

 Larva with membranaceous feet. 



Decem-maculata Leach Zool. Mis. v. 3. p. 106. n. 7. T. lutea Linn. ? 

 ¥n. Su. 1534. 



Body obscurely villose : black, the abdomen tinged with violet, 

 the third and seventh joints having a pale greenish yellow spot on 

 each side ; the 3 intermediate joints of the same colour interrupted 

 by blackish violet down the centre. Abdominal membrane pale 

 yellow. Antennae and tarsi testaceous. Wings pale fulvous : 

 costii, 2 cells near the stigma and posterior margin ferruginous. 



Li t/te Cabinet of the British Museum. 



Dr. Leach has described in the Zoological Miscellany (above 

 referred to) eleven species of this fine Genus, seven of which are 



