Dasydorylas Skevington, 2001 (Pipunculidae, Tomosvaryellini) of Colombia, with description of three new species and a key to Neotropical males Author Ramos-Pastrana, Yardany 88C7A940-B2AC-4373-B06B-3EC2823D9DF8 Universidad de la Amazonia, Grupo de Investigación en Entomología Universidad de la Amazonia - GIEU, Laboratorio de Entomología, Av. 11 5 - 69 Juan XXIII, Florencia, Caquetá, Colombia. & Instituto Nacional de Pesquisas da Amazônia, INPA, Manaus, Amazonas, Brazil. ya.ramos@udla.edu.co Author Marques, Dayse Willkenia A. 5865C71E-1BDC-4198-AEC4-1421FEBE1202 Instituto Nacional de Pesquisas da Amazônia, INPA, Manaus, Amazonas, Brazil. willkenia@gmail.com Author Rafael, José Albertino 947EF9B2-FBB4-4618-9695-156C82C462D0 Instituto Nacional de Pesquisas da Amazônia, INPA, Manaus, Amazonas, Brazil. jarafael@inpa.gov.br text European Journal of Taxonomy 2024 2024-05-02 932 138 157 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2517/11291 journal article 10.5852/ejt.2024.932.2517 2118-9773 11119687 1137F37F-AF51-44E2-8D3E-3C68992029A5 Key to males of the Neotropical species of Dasydorylas 1. Postpedicel with acuminate apex ( Fig. 29 ); vein M 1 slightly straight or clearly straight ( Fig. 31 ) ........................................................................................................................................................... 2 – Postpedicel with aristiform apex ( Figs 3 , 16 , 42 ); vein M 1 slightly to clearly upward curved ( Figs 5 , 18 , 44 ) ............................................................................................................................................... 7 2. Phallus bifid [fig. 36 in Rafael & Ale-Rocha (2004) ] ................................ D . vulcanus Rafael, 2004 – Phallus trifid [ Figs 12 , 25 , 51 ) .......................................................................................................... 3 3. Both surstyli with bases slightly thicker than apices [fig. 25 in Rafael (1991) ]; third costal section subequal in length to fourth [fig. 39 in Rafael (1991) ] ............................... D . regalis ( Rafael, 1991 ) – Both surstyli with bases clearly thicker than apices ( Fig. 34 ); third costal section slightly longer than fourth ( Fig. 31 ) .................................................................................................................................. 4 4. Left surstylus left-directed and right surstylus directed clearly downwards, when seen in frontal view [fig. 35c in Hardy (1943) ] ........................................................................... D . cinctus ( Banks, 1915 ) – Both surstyli slightly sideways-directed [fig. 100 in Rafael (1995) ] or clearly sideways-directed ( Fig. 34 ) ............................................................................................................................................ 5 5. Phallic guide with a tuft of small setae dorsally [fig. 101 in Rafael (1995) ]; junction of ventral and frontal margin forming an angle of about 110° [fig. 101 in Rafael (1995) ]; phallus trifid, with ejaculatory ducts not distinctly separated [fig. 101 in Rafael (1995) ] ..................................................... ................................................................................................................ D . nigripedes ( Hardy, 1954 ) – Phallic guide without tuft of setae dorsally ( Fig. 38 ); junction of ventral and frontal margin of phallic guide curved, not forming an angle ( Fig. 38 ); phallus trifid, with ejaculatory ducts distinctly separated only in distal seventh ( Fig. 38 ) ......................................................................................................... 6 6. Both surstyli thickened basally and medially, thin apically, with outer margins sinuous not forming an angle [fig. 54 in Rafael (1995) ]; phallic guide with dorsal margin curved upward in distal half [fig. 54 in Rafael (1995) ] ............................................................................ D . eremita ( Hardy, 1954 ) – Both surstyli with basal half thickened and distal half thin, with outer margin forming an angle ( Fig. 34 ); phallic guide straight, slightly curved upward only in distal third ( Fig. 38 ) ...................... ................................................................................................................... D . nigellus ( Rafael, 1991 ) 7. Both surstyli more thickened medially than basally and apically, with inner margins sinuous ( Fig. 47 ); phallic guide with upper margin straight and a tuft of small setae basally ( Fig. 51 ) .......... .................................................................................................................. D . santainesensis sp . nov . – Both surstyli thickened basally and medially, thin apically, with inner margins straight and outer margins curved ( Figs 8 , 21 ); phallic guide with upper margin sinuous and a tuft of small setae centrally ( Fig. 12 ) or with stout and rigid lobe dorsally ( Fig. 25 ) ................................................................... 8 8. Both surstyli with acute apex ( Fig 8 ); phallic guide with upper margins sinuous and a tuft of small setae centrally ( Fig. 12 ); phallus trifid with ejaculatory ducts distinctly separated only in distal quarter ......................................................................................................... D . colombiensis sp . nov . – Left surstylus with rounded apex, right surstylus with truncated apex ( Fig. 21 ); phallic guide with a stout and rigid lobe dorsally ( Fig. 25 ); phallus trifid with ejaculatory ducts distinctly separated only in distal ninths ........................................................................................................ D . gibber sp . nov .