EMPHYTUS TIBIALIS. 275 



7. EMPHYTUS TIBIALIS. 

 PI. XIII, fig. 2 ? . 



Tenthredo tibialis, Pz., F. G., 62, 11, 147, 12; Fall., Mon., 41, 

 14. 



Empliytus tibialis, Klug, Berl. Mag., 282, 209; Ste., 111., vii, 

 91, 9 ; Htg., Blattw., 251, 17 ; Voll., 

 Tidj. Ent., ii, 143146, pi. 3 ; Zool. 

 S. S., 8409 (lar.) ; Thorns., Opus, 273, 

 2; Hym. Scand., i, 149, 9; Cam., 

 Fauna, 21, 4 ; Andre, Species, i; Cat., 

 30,* 2. 



Black ; antenna? from the sixth joint to the apex of the ninth and 

 the basal half of tibiae white ; femora red, black at base and extreme 

 apex ; apical half of anterior, four posterior tarsi and apical half of 

 posterior tibiee, black ; apical half of four anterior tibiae reddish-tes- 

 taceous. Cenchri and blotch white. Tegulce varying from black to 

 testaceous. Wings hyaline ; costa testaceous ; stigma black. ? 

 and cf. 



Length 4 5 lines. 



A very variable species. The tegulaa vary from 

 black to testaceous almost to yellow ; the femora are 

 entirely reddish or broadly marked with black at base 

 and apex. The number of joints of antennae that are 

 white vary also ; sometimes the four apical are white, 

 or the ninth may be black, or the eighth and ninth 

 are black, or part of these two and rarely the whole of 

 the apical one are black; the anterior tarsi (usually 

 the first pair are black at the apex, and the second 

 pair quite black) are pale testaceous. 



Readily known by the colour of the antennas and 

 legs. 



The larva has been described and figured by Yan 

 Vollenhoven. It feeds on the oak in early summer, 

 resting curled up on the upper side of the leaves. It 

 has the segments much wrinkled ; the colour is dark 

 olive on the back and pale grey on the rest of the body. 

 Along the back is a pale longitudinal line, and the 

 ground colour above the legs is marked with darker 

 ill-defined spots. The head is on the upper surface 

 clear shining black, and bears some minute shining 

 projecting hairs. The oral region is pale with dark 



