Plagiocephalus intermedius Kameneva 2004b

Vasconcelos, Ana Caroline O., Wendt, Lisiane D. & de Carvalho, Claudio J. B., 2019, Taxonomic revision of the Neotropical stalk-eyed fly Plagiocephalus Wiedemann (Diptera, Ulidiidae, Ulidiinae), Revista Brasileira de Entomologia 63 (1), pp. 80-90 : 88-89

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).

Figures

Fig. 2. A–C. Plagiocephalus lobularis, female: A. Head in frontal view; B. Body in dorsal view; C. Body in lateral view. D–F. Plagiocephalus latifrons, female: D. Head in frontal view; E. Body in dorsal view; F. Body in lateral view. G–I. Plagiocephalus intermedius, female: G. Head in frontal view; H. Body in dorsal view; I. Body in lateral view.

Fig. 3. A–B.Plagiocephalus lobularis: A.Male wing; B. Female wing. C–D.Plagiocephalus latifrons: C.Male wing; D. Female wing. E–F.Plagiocephalus intermedius: E.Male wing; F. Female wing. Abbreviations: ab: apical band; db: discal band; sab: subapical band; rmb: radial-medial band.

Fig. 6. Distribution map of Plagiocephalus with Costa Rica detached. Circles show distribution records from the literature. Stars show new distribution records. Yellow: P. intermedius; Red: P.latifrons; Light blue: P.lobularis.