Males of the genus Sericostoma Latreille 1825 in Turkey (Trichoptera Sericostomatidae) Sipahiler, Füsun Zootaxa 2021 2021-04-29 4965 3 483 500 Sipahiler, 2021 Sipahiler 2021 [151,393,1518,1545] Insecta Sericostomatidae Sericostoma Animalia Trichoptera 8 491 Arthropoda species dimcay sp. nov.  ( Figs 26–29)   Material:  Holotypemale: Turkey, Antalya, Alanya, Dimçay, 36°31′N, 32°18′E,  19.v.1986, (CD: U-57), leg. and coll. SİPAHİLER.   Paratypes: 4 males, 2 females(pupae): Same data as for holotype. Alanya, Demirtaş direction, Sapadere,  341 m, 36°31′N, 32°18′E,  20.v.2009, 2 males(pupae), (CD: U-163),  General description.Wings of pupa dark brown, other parts pale yellowish, length of male pupa 10.0–11.0 mm (mean = 10.5 mm, n = 2), of female pupa 10.0–12.0 mm (mean = 11.0 mm, n = 2).   Description of male genitalia( Figures 26–29): In lateral view, segment IX roundly dilated anterolaterally in 80° angle. Preanal appendages long, clavate, apically rounded; in dorsal view, long and thin. In dorsal view, segment X triangular, acute apically. In lateral view, lateral prolongations of segment X with basoventral branch triangular, acute, slightly bent caudad; mesoventral branch very long, rather narrow, and 4/5 as long as dorsal branch; dorsal branch about 1.5X thicker than mesoventral branch. In lateral view, inferior appendages each with dorsal branch dilated dorsally on apical half; in ventral view, ventral branch sinuate, its apex broadly quadrangular and curving mesad. In lateral view, phallic apparatus narrow at base, second half dilated, 2.0X as thick as base, basoventral carina triangular and about 2.0X as long as thickness of base.   Diagnosis:  Sericostoma dimcay sp. n.resembles  S. alakir sp. n.The main differences are explained in the diagnosis of  S. alakir sp. n.above.   Remarks:  Sericostoma dimcay sp. n.lives in mountain streams with rapidly flowing water. 3110844314 1986-05-19 Turkey 36.516666 Dimcay 1186 32.3 Alanya 8 491 1 Antalya holotype 3110844307 2009-05-20 Turkey 341 36.516666 Dimcay 1186 32.3 Alanya 8 491 6 2 4 Antalya paratype