KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 35. N:0 5. 49 



Fifth pair of legs 4-jointed; the ultimate joint withont denticulate lamella; its Si longer 

 than the joint. L. 1,2 mm. 



Description of the female. Body. Length (anterior part 0,75, posterior part 0,45) 

 1,2 mm. Anterior part somewhat more than twice as long as broad, broadly rounded in 

 front, 4-jointed; longitudinal proportion of the joints 52 : 8 : 7 : 8; last segment syinmetrical, 

 ending on each side in a strong spine. Rostnun bifid, with long protracted, narrow lila,- 

 ments. No eye. Abdomen i-jomted; the longitudinal proportion of the joints: 19:12:11:10. 

 Genital-segment slightly longer than broad, with ventral genital-opening, in front of which 

 is on each side a backwards curved styliform appendage. Posterior margin of the 1 — 3 

 joints with a row of small ti'iangular scales. Anal-segment somewhat shorter than the 

 other. Furca symmetrical, 2V2 times longer than the anal-segment; its branches 7 times 

 longer than broad, inside hairy. Se near the end, half as long as the furca, plumose 

 on the posterior margin. Si short, finely plumose, inserted at the basis of St 2. St 2 

 the longest of the four St, 1^/2 as long as the furca, slightly longer than St 3, Avhich is 

 somewhat longer than St 4. The St 4 is about half as long as St 2. St with a joint, 

 dividing the *S in one proximal and one twice as long distal part, the latter being more 

 strongly plumose than the former. > . [ .' '>''^. .i v" .■■' <'. 



First pair of antennce reach to the posterior margin of the genital-segment, 20- 

 jointed; the distal part almost straight. The 11 distal joints of almost equal length; the 

 two preceding somewhat shorter and about as long as the two iirst joints. The 3rd to 

 6th joints are as long as broad and half as long as the distal joints. The ultimate joints 

 (24 — 25) uniting. All bristles, hairs and sensorial appendages are short, none scarcely 

 longer than 2 joints. 



Second pair of antennce. B 1 with a short Si; B 2 uniting with Ri (no joint); 

 one distal pair of Si. Ri 1 with one distal pair of S. Ri 2 as long as Ri 1. Li with 8 S; 

 Le with 6 coarser and 1 finer S. Re ^/s as long as Ri; Re 1 with \ S; Re 2 with 2 S; 

 Re 3 — 6 each with 1 S; Re 7 with 1 proximal and 3 long, plumose distal S. '" 



Mandihle. B 1 trapezoidal, its interiör part being protracted; with 3 Si. Re as 

 long as broad, incompletely jointed, with 6 plumose S. Ri nearly twice as long as Re, 

 with 1, 2 basal and 8 terminal S, strongly outwards reflexed. 



Masticatory apparatus. Anterior margin vf\i\\ 3 indentations. Interiör margin with 

 10 teeth and 1 short Si. The teeth are conical. The largest exteriör tooth sejjarated 

 by a gap from the other, which become narrower towards the interiör side. 



Maxille. L 1 prominent, with slightly rounded margin, carries 10 strong, plumose 

 spines and some filiform ;S'. L 2 with 4 strong, plumose S. L 3 small, cylindrical, with 

 2 (3?) S. B 2 with 5 S. Ri as long as B 2 is broad; separation of Ri 1 and Ri 2~3 

 incomplete; 5' 2, 2, 2, 7. Re reaches to the distal end of B 2 and carries 10 >S. Le 1 

 with 9 plumose S. Between Le 1 and Re one S. 



Anterior maxillipied 2V2 times longer than broad. Lobes, especially the 5th, pro- 

 minent, digitiform, crowded. L 1 with 4 coarse Sa of nearly equal length i\.nå 1 faint Sp. 

 L 2 — ö each Avith 2 strong Sa and 1 half as long Sp- Ri with 5 Sa and 1 shorter Sp. 

 All Sa of nearly equal length and coarsely ])lumose. 



K. Sv. Vet. Akad. Haudl. Band 35. N:o 5. '-":'•• , ■■■ ./■-■.•■-. ■!■ 117;; ^^ 



