507 



pit; posterior frontal seta situated behind pit, slightly shorter and thinner. 

 Setae of large, lateral sclerites thin, light, as in Oe.ochracea. 



Labrum with 3—4 tubercles in 

 median indentation; setae 1 and 2 

 in form of large, thick, inward 

 curved, transparent spines; setae 4 

 situated lateral to indentation; 

 setae 3 at anterior angle, both 3 

 and 4 short, thin, yellowish; setae 

 5 and 6 lateral to median 

 indentation, slightly larger than 

 short, strong, secondary, surface 

 setae. Posterior angle sclerites 

 brownish, thick, straight or 

 slightly curved. 



Mandibles long, narrow, with 

 large teeth which are serrated at 

 base. Sclerites of cardo reddish 

 brown; stipes with reddish brown 

 basal spot; palpifer and palps as 

 in Oe.ochracea. 



Pronotum light, whitish yellow, 

 without pattern, sometimes with 

 2 indistinct, yellowish, posterior 

 spots near median suture; 

 posterior margin laterally with 

 a brownish spot and wide, reddish 

 black, lateral margin; chaetotaxy 

 as in other species of Oecetis. 



Mesonotum pale, without dots ; 

 anterior-margin seta long, situated 

 some distance from margin; a sec- 

 ond, longer anterior-margin seta 

 situated closer to naargin near ante- 

 rior-angle group, which consists of 

 17 setae of different size; medio- 

 anal and lateral surface setae 

 long; intermediate seta short, thin. 



Propleuron (Figure 806) with 

 narrow, reddish brown, pleural 

 suture and similar lateral margin 

 of episternum; epimeron light, 

 indistinct, seta at suture strong, 

 large; lobe of trochantin 

 moderately long, narrow distally, 

 with a long seta in the middle. 

 Pleurites of meso- and metathorax 

 as in Oe. ochracea; pleural su- 

 ture pinkish, lighter and narrower. 

 Legs (Figure 807) as in Oe. ochracea in form and chaetotaxy; claws 

 of mid- and hind legs much longer than tarsi; basal seta rudimentary. 



808 



809 



FIGURES 806-809. 

 nova: 



806 — propleuron; 

 and hind leg (B); 1 

 dorsal; 809 — larval case. 



Oecetis intima McL. larva 



807 — tarsus and claw of midleg (A) 

 !08 — posterior part of segment 9, 



633 



