ABIA SEEICEA. 31 



1. ABIA SEEICEA. 



Vol. II, PL V, fig. 5, Abdomen of $ ; 5 a, Head of <? ; 

 5 b, Antennae ; 5 c and d, Trophi ; 5 e, Head of ? . 

 Vol. II, PI. XI, fig. 9, Larva. 



Tenthredo nitens, Lin., L. N., i, 556, 7 ; F. Su., 389. 



aericea, L., 1. c., 921, 8; Pz., F. G., Heft 17, pi. xvi. 

 Cm&e sericea, Klug, Berl. Mag., i, 92, 8; Htg., Blattw., 73, 8. 

 Abiasericea, Ste., 111., vii, 14, 2 ; Br. and Zad., Sohr. Ges. Konig., 

 iii, 273; Cam., E. M. M., xii, 111 (1875). 

 nitens, Thorns., Hym. So., i, 27, 1. 

 - dorsalis, Costa, F. N., Cimb., 5, pi. Ixi, f. 1. 



Antennae shorter than thorax, testaceous, often blackish or fuscous- 

 black at base of apex. Head much narrower than mesothorax, dark 

 brassy-green, finely punctured, and covered with long black hair. 

 Labrum and palpi dark testaceous. Thorax brassy-green ; mesonotum 

 and pleurae ccerulescent ; metanotum with a coppery tinge, covered 

 with a long black pubescence, and very finely and closely punctured. 

 Cenchri small, narrow, pale white. Abdomen bright brassy-green, the 

 upper side coppery, irregularly punctured, the segments in ridges, 

 convex; basal segments smooth, shining; the apical closely covered 

 with a griseous pubescence. The anal (ninth) segment is incised in 

 the middle, acute ; the sheath of saw projects, testaceous ; the edges of 

 the ventral segments are pale. Legs : coxae, trochanters, and femora 

 coppery-black ; knees, tibise, and tarsi straw-yellow. Wings yellowish 

 hyaline ; nervures, costa, and stigma luteous ; the nervures are black 

 at the base ; below the stigma is a smoky fascia, situated between its 

 middle and the transverse basal nervure ; there is a less clearly defined 

 fascia at the apex, partly in the second radial, partly in the third 

 cubital, cellule. The tarsi have a ferruginous tinge. 



The $ differs in having on the fourth to the seventh abdominal 

 segments, in the centre above, a quadrate depression, which is covered 

 with a black velvety pubescence ; its apex is a little narrower than the 

 base. The first segment has a fine raised ridge in the centre. The 

 puncturing is close, the general coloration is not so bright, and, if any 

 thing, the pubescence on head and thorax is longer. The anal append- 

 ages are testaceous. 



Length 4 5f lines. 



Alia brevicornis, Leach (splendida, Kl.), is smaller 

 than sericea. The antenna and mouth are testaceous, 

 the femora are entirely yellow, the wings are not so 

 yellowish, and the fascise are fainter and narrower ; the 

 tegula3 are yellow behind, and the abdomen, and to 

 some extent the mesonotum, have a decided bluish 

 tinge. In the <J the quadrate spot is rusty-brown 



