Lll 



in the Limnophilinae. Secondary chaetotaxy of head, thorax, and legs 

 richer than in Baicalinini. Tergite of segment 9 usually with a large 

 number of secondary setae. 



Case built more carefully than in Baicalinini, consisting mainly of small 

 sand grains, markedly flattened ventrally, with large grains only at lateral 

 margin. 



Mode of life and habitats. Stagnant and running water from 

 brooks and streams to large rivers in the plains and large deep lakes; 

 shallow water, sometimes at a depth of only a few cm; lakes and large 

 rivers, mostly in the littoral zone, on solid bottom of stone, clay, or firm 

 sand; avoids swampy waters and silt. 



Distribution. Throughout the USSR. In addition, Europe, Asia, 

 North America. 



The species, the larvae of which are described below, were previously 

 considered as belonging to a single genus, Ap at an i a Kolenati, 1848, 

 sensu lato. This was also the view of Martynov until 1918 (Martynov, 

 1914:26-51); later, Martynov (1918:56-63) accepted the division of the 

 genus Apatania Kolenati s. 1. into 2 more narrowly defined genera, 

 Apatania s. str. Wall, and Apatelia Wall., according to Wallengren 

 (1891:87-89). Schmid recently (1953:109-119, 144-167; 1954a: 1-53; 

 1955:80—84) returned to the broad definition of the genus Apatania 

 Kolenati, 1848, dividing the genus into 5 species groups. The larvae of 3 

 of these groups: w a llengr en i, s t i g m at e 11 a, and f i m b r i a t a, are 

 described here; the species of the first 2 groups were previously placed 

 in the genus Apatania Wall.; those of the 3rd group in the genus 

 Apatelia Wall. In contrast to the tribe Baicalinini, the following 

 descriptions of the larvae show that there are no marked morphological 

 differences between the species of Apatania Wall, and Apatelia Wall, 

 (e. g., presence of horn, gills, structure of sclerites); the groups differ 

 mainly in coloration, sometimes markedly, and also in minor morphological 

 characters. Studies of the larvae of Apatanini show clearly that the genus 

 Apatania Kolenati should be accepted in its broad sense, and we accept 

 this in the present work. 



The larva of Apat ani a bulbosa Mart., a species placed by Schmid 

 (l. c.) in the genus Apataniana Mo s., is not known with certainty; the 

 larva of A. bulbosa described provisionally (Lepneva, 1949:181) differs 

 from the larvae described here in its distinct coloration; it has a dark, 

 reddish brown head with clearly defined, wedge-shaped punctation of the 

 frontoclypeus, a dark pronotum (in contrast to the light pronotum of 

 most species of Apatania) and a different, cylindrical, slightly curved 

 case; it inhabits mountain streams and rivulets. The larva of the only 

 species of Apat id e li a Mosely (A. m a r t y no v i Mos., East China) is 

 unknown. 



The characters of the tribe described above are based on the larvae 

 of Apatania Kol. 



1. Genus Apatania Kolenati 



Full-grown larva. See description of tribe. 



Mode of life and habitats. Clear water bodies of different size, 

 stagnant or running; streams and brooks; littoral zone of rivers and lakes; 



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