Genus Taeniorhynchus. 487 



Taeniorhynchus argenteus. Ludlow (1905). 



Canad. Entomo. Vol. XXXVII., p. 98 (1905). 



Head dark brown with white curved scales, white and brown 

 flat lateral scales ; proboscis with an ochraceous band at base of 

 apical half. Thorax dark brown with white curved scales, with 

 two brown bar-like spots on posterior one-third and two round 

 brown spots near head end. Abdomen dark brown with narrow 

 basal pale bands and some basal lateral white spots. Femora 

 and tibiae speckled ; tarsal segments with basal white spots or 

 bands. 



" $ . Head dark brown, almost black, covered with white curved 

 scales, white and pale ochraceous forked scales, and a few brown mixed 

 with white flat lateral scales, small white curved scales between the eyes ; 

 antennae brown, verticels dark brown, pubescence white, basal segment 

 testaceous ; palpi dark brown with a few white scales at the tip ; proboscis 

 dark brown, with ochraceous band at basal part of apical half; clypeus 

 dark brown ; eyes brown and golden. 



Thorax with prothoracic lobes brown, with white curved scales and a 

 few brown bristles ; mesonotum dark brown, almost black, with white 

 curved scales, except two ante-scutellar sub-median brown bar-like spots 

 projecting forwards from the scutellum about one-third the length of ,the 

 mesonotum, and two very small round brown spots near the cephalic end ; 

 there are also a few light bristles, but not making distinctly marked lines. 

 Scutellum dark brown with white curved scales and dark bristles, six on 

 posterior border of median lobe, four on each of the lateral lobes ; pleurae 

 dark brown, with small bunches of flat white scales ; metanotum dark 

 brown. 



Abdomen dark brown, narrow basal light (slightly ochraceous) bands, 

 occasionally a few apical light scales, small basal white lateral spots on 

 some of the segments ; ventrally mostly light scaled. 



Legs: coxae and trochanters dark brown with white scales; all the 

 femora dark brown with a sprinkling of white scales, so as to make them 

 quite speckled, ventrally lighter, and on the mid and fore legs mostly 

 light scaled ; tibiae of mid legs markedly speckled, the others darker 

 first tarsal brown on all the legs, with small basal light bands, and the 

 other tarsal segments are also brown, and have small basal light spots, 

 sometimes developed into bands, except the ultimate segment of the hind 

 legs, which is dark throughout. Sometimes these spots or bands are very 

 faint. Ungues equal and simple. Wings clear, rather heavily brown- 

 scaled, especially on the apical half; median scales heavy, clavate, somewhat 

 truncate, lateral scales spatul ate, ventral scales slender; ventral scaling 

 usually heavy. Fork-cells short ; the first sub-marginal somewhat shorter 

 and narrower than the second posterior ; supernumerary cross-vein slightly 



