Taxonomic revision of the Neotropical stalk-eyed fly Plagiocephalus Wiedemann (Diptera, Ulidiidae, Ulidiinae) Author Vasconcelos, Ana Caroline O. Author Wendt, Lisiane D. Author de Carvalho, Claudio J. B. text Revista Brasileira de Entomologia 2019 2018-12-31 63 1 80 90 http://dx.doi.org/10.1016/j.rbe.2018.12.002 journal article 10.1016/j.rbe.2018.12.002 1806-9665 13196000 Plagiocephalus intermedius Kameneva 2004b ( Figs. 2G–I , 3E, F ) Plagiocephalus intermedius Kameneva, 2004b: 19 ( Holotype : 1 male , INBio; Paratypes : 3 males and 17 females , INBio; Type locality: Costa Rica : Puntarenas , Monteverde ) (examined by photographs). Type material. Holotype (male): Costa Rica : Puntarenas : Monteverde , San Luis , Buen Amigo , 1000–1350 m , ix.1994 , 3224, Fuentes leg .. Paratypes ( 3 males , 17 females ): Costa Rica : Cartago : A. C. Amistad , P. N. Tapanti , 1150 m , i.1994 , Mora leg. , 1 male ; Guanacaste : Rio San Lorenzo , Tierras Morenas, Z. P . Tenorio , 1050 m , i.1993 , Rodriguez leg ., 1 female ; P. N. Guanacaste : Est. Cacao , vii.1989 , GNP Biod. Sur. leg ., 1 female ; idem, SW side Volcan Cacao , 1000–1400 m , xi–xii.1989 , Blanco , Chaves leg ., 1 female ; idem, Lado SO Volcan Cacao , 800–1600 m , 12–17.vii.1993 , Fuentes leg ., 1 female ; Puntarenas : Monteverde , San Luis , Buen Amigo , 100–1350 m , ix.1994 , 1 female ; ibidem, xi.1994 , 1 male ; ibidem, 25.xi–10.xii.1996 , Fuentes leg ., 1 male ; Est. Pittier , Sendero Pittier , 1670 m , 26.vi.1995 , Angulo leg ., 1 female ; ibidem, 21.vi–4.vii.1995 , Moraga leg ., 2 females ; ibidem, 25.vi–4.vii.1995 , Zumbado leg ., 3 females ; ibidem, 1700 m , 3.vii.1995 , Zumbado leg ., 2 females ; Buenos Aires , Est. Altamira , Sendero Los Gigantes , 1450 m , 4.i–3.ii.2000 , Rubi leg ., 4 females ( INBio ) . Diagnosis. Plagiocephalus intermedius can be differentiated by the eyestalks of male longer than in P. lobularis and shorter than in P. latifrons (3.00–7.00 mm); female parafacialia yellow ( Fig. 2G ); radial-medial band with base wider than apex, at most barely touching the discal band ( Fig. 3E, F ). The species can also be distinguished by male face yellowish white; male scape, pedicel and first flagellomere entirely yellow, and female scape, pedicel and first flagellomere gold with apex darker ( Fig. 2G ); palpus yellow; proboscis reddish yellow, with brown and yellow setulae. Male wing of normal outline, without posterior lobes ( Fig. 3E ); crossvein r-m located distinctly before the apex of vein R 1 ( Fig. 3E, F ); male subapical band curved and narrower when touching the apical band ( Fig. 3E ); male apical band wider than in P. lobularis and P. latifrons ( Fig. 3E ). Male fore and mid legs entirely yellow, and hind leg yellow to gold; female legs brown with tarsi lighter, and fore femur yellowish on the apex ( Fig. 2I ). Measurements : Male: Body: 4.50–5.80 mm; Wing: 4.70–6.10 mm. Female: Body: 2.88–3.35 mm; Wing: 4.62–5.7 mm; Oviscape: 1.29–1.50 mm. Material examined. COSTA RICA : La Suiza , 1961, P. Schild leg ., 1 female ( USNM ); idem, 24.xi.1961 , PablShild leg ., 1 female ( USNM ) . Distribution. Costa Rica ( Fig. 6 ). Comments. Part of the INBio collection, including the type material of P . intermedius , was aggregated to the Museo Nacional de Costa Rica . The material of P . intermedius from the USNM examined in this work had been previously misidentified as P . latifrons by Kameneva (2004b) .