stagnant ponds; they inhabit lakes, and are the most common element of the 

 fauna of plant thickets, especially in estuarine parts of lakes; they occur 

 in slowly flowing rivers or rivulets overgrown with plants or in similar 

 water bodies in river floodplains; the species occurs in all zones of plant- 

 thickets, more rarely in the zone of Potamogoton than in other zones; 

 pupation often takes place on the leaves of water lilies. 



Distribution. European USSR, extreme northwest of Siberia (rare). 

 In addition, Europe, North America. 



2. Agraylea pallidula McL. 



Struck, 1899:342-343, Figure 31; 1900:29-32, Figure 49. - Ulmer, 1903: 

 132-133; 1909:226, 293.- Siltala, 1904b:ll — 12, Figure a, b. - Lestage, 

 1921:441—445, Figure 141.— Lepneva, 1940:202. — Jacquemart, 1958:1—4, 

 Figures 1 — 11 . 



Full-grown larva. Length 5.5— 6.0 mm, height of abdominal segment 5 

 1.2 — 1.4 mm. Sclerites yellowish, with a grayish-brown or brown pattern. 

 Dorsal side of head mainly grayish brown; a wide light area near the eye; 

 331 two dark brown spots at the curvature of the frontal sutures, near the base 

 of the mediolateral setae of the frontoclypeus; similar spots form a trans- 

 verse row, which consists of two spots on each side near the anterior margin 

 of the coronal suture near the base of setae 17 and 16 (Figure 410); distinct 

 light dots in the posterior part of the head. The mouthparts resemble those 

 of A. multipunctata. 



330, 



FIGURE 410. Agraylea pallidula McL. Head and prothorax, dorsal (A) and 

 lateral (B) 



363 



