106 TENTHBEDOPSIS CALIGINOSA. 



4 TENTHREDOPSIS CALIGINOSA. 

 PI. XVI, fig. 7, Saw. 



Tenthredo caliginosa, Ste., 111., vii, 78, 17. 



Tenthredopsis caliginosus, Cam., Tr. Ent. Soc., 1881, 566. 



Black; labrum, clypeus, scutellar spots white or yellowish-white ; 

 legs dull testaceous ; hinder femora, middle femora to the middle, and 

 front at extreme base, with all the co~s.se, black ; hinder tarsi fuscous ; 

 hinder tibiae much darker than anterior, sometimes pitchy. Antennae 

 black, pitchy beneath. Wings hyaline ; tegulae black. ? . ^ 



Ab. 9 trochanters and a thin line on base of abdomen white ; sides of 

 abdomen in middle faintly testaceous ; hinder tibiae testaceous. 



$ black ; orbits of eyes broadly, mouth, trochanters, and a faint line 

 on base of abdomen white ; the belly in middle and anal segment above 

 testaceous ; hinder femora black ; hinder tarsi pale testaceous. Antennae 

 bright testaceous with a fuscous line above. 



Length 5 6 lines. 



Stephens records it as " not very uncommon within 

 the metropolitan district in June." In Scotland it 

 occurs in Clydesdale and Dumfries, but is rare. 



In the coloration of the legs it resembles femoralis, 

 but it differs in having the abdomen entirely black ; the 

 third joint is longer compared to the fourth, and the 

 saw is very different. Microcephala is larger, has the 

 antennas longer, the abdomen more sharply pointed. 

 From the darker specimens of tristis it may be easily 

 known by having the coxse and trochanters black, 

 spurs and antennae longer, third joint of antennas 

 much longer than fourth, and the pronotum quite 

 black. 



5. TENTHREDOPSIS NIGRONOTATA. 

 PI. XVII, fig. 9, Saw. 



Tenthredopsis nigronotatus, Cam., Tr. Ent. Soc., 1881, 566. 



Black ; labrum, clypeus, mandibles, margins of eyes, a spot behind 

 them, and scutellar spots white; legs and third, fourth, and fifth 

 abdominal segments in part bright red ; coxae, trochanters, and a line 

 down the centre of the third, fourth, and fifth abdominal segments 

 above black ; hinder tarsi faintly fuscous, darker at the apices. Antennae 

 black, fuscous beneath. Wings hyaline ; tegulse black. 



Length nearly 6 lines. 



