78 TENTHREDO COLON. 



4. TENTHREDO COLON. 

 PL 1, fig. 9, larva. 



Tenthredo colon, King, Berl. Mag., viii, 182, 121; Htg., 



Blattw., 312, 56; Evers., Bull. 



Mosc., xx, 55, 38; Thorns., Hym. 



Scand., i, 276, 12 ; Kalt., Pfl. 251 ; 



Toll., Tidj. Ent., xviii, 4349, pi. 5 



(lar. &c.); Cain., Fauna, 11, 2; 



Andre, Species, i, 445 ; Cat., 57,* 



27. 

 Allantus colon, Ste., 111., vii, 67, 29. 



Black, shining ; sixth, seventh, eighth, and the greater part of the 

 ninth joint of antennae, mouth, and two spots over posterior coxae 

 white. Legs reddish, coxae, trochanters, and the posterior femora 

 sometimes black at the base and apex, posterior tarsi annulated with 

 black, anterior legs pale white in front. Abdomen black, red at the 

 apex (generally the three apical segments). Wings hyaline, costa pale 

 fuscous, stigma blackish-fuscous, tegulae red. 



The $ has the seven apical abdominal segments red, all the femora 

 lined above with black, and the coxae below, trochanters, and extreme 

 base of femora whitish. In the only <? I have the two apical joints of 

 the antennae are white. 



Length 4| 5 lines. 



Among other differences colon may be known from 

 livida by the shorter, less excavated front, the antennal 

 joints are not so much produced at the apex, the sixth 

 being moreover quite white, and the tegulse are red- 

 dish. Compared with coryli it has the antennse longer, 

 and black at the extreme apex; the front is more 

 excavated, and the head more shining. 



It is rather a variable species. The legs are some- 

 times quite red, with the base of the coxse and 

 trochanters white ; or the latter may be black, and a 

 shorter or longer black line over the femora ; the 

 tegulse vary from clear red to fuscous, and the number 

 of abdominal segments that may be red varies ; occa- 

 sionally, too, specimens are met with having the anal 

 segment blackish. 



The larva has been described by Kaltenbach, and 

 by Yollenhoven, who has given good figures of the 

 larva and imago. 



According to these observers the larva feeds during 



