315 



FIGURES 386 and 387. Aga 

 petus comatus Pict. 

 (after Siltala): 



386 - larva: frontoclypeus; 



387 - pupa: right mandible, 

 ventral (A), end of body of 

 male pupa (B). 



From the 1st stage onward, the larvae live in a 

 case, building a new case after each molt. Length 

 of case of lst-stage larva 1.8mm. 



Pupa. Length 3.2— 4.0 mm. Antennae reaching 

 the 5th abdominal segment; 1st antennal segment with 

 one seta. Labrum (Figure 3 78) broad, with a straight, 

 anterior margin and with rounded sides; anterior 

 seta thick, short, light; the other 5 setae long and 

 strong; posterior half of labrum covered with small 

 tubercles. Mandibles (Figure 3 79) symmetrical; 

 each mandible with 2 pointed, distally directed teeth 

 in the middle; mandibles grayish brown at the base, 

 yellow apically; distal part of mandible and teeth 

 finely serrated; outer setae small; basal seta 

 shorter than distal seta. 



The wing sheaths reach the 6th abdominal segment. 

 Natatorial setae present on segments 1—4 of mid- 

 tarsi, longer in the dorsal row than in the ventral 

 row; distomedian process of pretarsus reaching to 

 half the claw. Presegmental plates small and rounded 

 on segments 4—7; postsegmental plates transversely 

 oblong, larger on segment 4; number of spinules as 

 follows: IV:20+65, V:25, VI:25, VII:20. The end of 

 the body of the male pupa is shown in Figure 380. 



Pupal case, as in all Glossomatidae, without lower 

 wall and attached to a stone by strands of tissue. 

 Pupal case 7— 8 mm long as in the full-grown larva. 



Mode of life and habitats. Brooks and 

 springs with cool water. 



Distribution. USSR: in the western boundary 

 area of the European part. In addition, Europe. 



2. Agapetus comatus Pictet 



KlapaleK, 1888:59-61, Figure 21.- Ulmer, 1903:130; 1909:222, 290, 

 Figure 426.- Siltala, 1905:155-158, Figure 40.- Lestage, 1921:427-429, 

 Figure 136. 



Full-grown larva. Smaller than Ag. fuscipes; form of body similar; 

 length 4.5—5.5 mm. Head yellowish brown, with dark posterior margin; 

 pattern indistinct. Frontoclypeus with a curved row of coarse dots at the 

 posterior margin;* dots in anterior part small; several indistinct dots also 

 lateral to the coronal suture and on the ventral side. 



Labrum and mandibles as in A. f u s c i p e s. 



Pronotum yellowish brown, without pattern. Tergites of meso- and 

 metathorax small, indistinct, especially on the metathorax. Sclerites of 

 pleura as in A. f u s c ip e s; pleuron of prothorax with a short seta and 

 2 setules in a row in the region of the trochantin. Legs brownish and 

 316 without pattern; distoventral setae of tibiae situated together with the 

 posterodistal seta (Figure 387); as in A. f u s c ip e s, they form a group, 



* Visible in preparations. 



344 



