Nova Acta Científca Compostelana (Bioloxía), 20: 27-33 (2013) - ISSN 1130-9717 Description of the larva and the case construction of Synagapetus anatolicus Çakın, 1983 (Trichoptera, Glossosomatidae) Descripción de la larva y el comportamiento constructor de Synagapetus anatolicus Çakın, 1983 (Trichoptera, Glossosomatidae) Füsun Sipahiler Hacettepe University, Department of Science Education TR–06800 Beytepe, Ankara, Turkey fusunsip@hacettepe.edu.tr (Recibido: 23/04/2013; Aceptado 17/06/2013) Abstract The previously unknown larva of Synagapetus anatolicus Çakın, 1983 is described and illustrated. The case construction of the larva is complicated due to the two foors of the case: upper foor is a solid U-shaped curved tube, where the larva sits. The pupal case has a construction totally different from the cases known in family Glossosomatidae. Keywords: Caddisfies, Synagapetus, larva, case, case construction, taxonomy, Turkey. Resumen La larva de Synagapetus anatolicus Çakın 1983, inédita actualmente, es descrita e ilustrada por primera vez. La construcción del estuche larvario es complicada debido a la existencia de dos niveles: el nivel superior, en el que se aloja la larva, es un tubo sólido curvado en forma de U. El estuche pupal tiene una estructura completamente diferente de la de todos los estuches conocidos en la famila Glossosomatidae. Palabras clave: Tricópteros, Synagapetus, larva, estuche, comportamiento constructor, taxonomía, Turquía.   INTRODUCTION Synagapetus anatolicus Çakın, 1983 is an endemic species, described from Yedigöller Na- tional Park in Bolu province, northwestern Turkey (ÇAKIN, 1983). Later this species was discovered in many places in northern Turkey, and also found in southern Anatolia (SİPAHİLER, 2003, 2010, 2012). The unknown larva of S. anatolicus is de- scribed in the present paper, based on the material collected from the type locality. The larvae of the family Glossosomatidae con- struct dome-shaped cases with a ventral plastron and the openings on the anterior and the posterior side of this foor. In the genus Synagapetus the larval case has a more complex structure and dif- fers from the genus Agapetus by having a large fringe and two faps on the ventral openings. In the larval case of S. iridipennis McLachlan, 1879 (BOHLE & FISCHER, 1983) the faps and the fringe are found but the dome-shaped upper foor is the only retreat for the larva, i.e. the dome- shaped enclosure is not divided into two foors like the remarkable case of S. anatolicus. The 18 known species of the genus Synagapetus which occur in Europe have such cases. The affliation of the fgures of a curved tube-shaped case given by BOTOSANEANU (1955) for the larva of an unknown species named as “Agapetin”, and cited as Agapetus larval case by MALICKY (1973) is still unknown. In the present paper the larva and the construction of the larval and pupal case of