Glyphidops flavifrons (Bigot, 1886) (Figs 1F, G, 5A, B, 8E) Diagnosis. First flagellomere oblong with arista apical, brown and bare. Ocellar triangle blackish-brown, contrasting in colour with the yellow frontal vitta (Fig. 1G). Vibrissa absent. Occiput brown with median yellow stripe widening posteroventrally, giving the ventral brown half of occiput a triangular shape (Fig. 5A, B). Prosternum narrow, separated from proepisternal plate by a wide membranous area. Two dorsocentral prescutellar setae. Scutum with two dorsomedian white pruinose stripes, separated by one wide median brown stripe that narrows after transverse suture (Fig. 1G). Thoracic pleuron variable in colour, from pale brown to entirely yellow, katatergite yellow (Fig. 5A, B). Fore coxa with one antero-apical seta (adapted from Sepúlveda et al. 2014). Material examined. Mexico. Campeche. Xtacumbilxunaán [19.99996, -89.74983], 22.vi.1985, M. Vertiz, 1 male (CNIN). Chiapas. Cacahoatán, Ej. Benito J. El Plan [15.100733, -92.143917], 1705m, Malaise, 13.vii-12.viii.2018, Cancino-López, R. J. & Luna-Luna, A. M., 1 female (CNIN); Escuintla, Finca Sta. Isabel [15.32289, -92.65883], 5-7.vii.1988, A. Cadena & L. Cervantes, 7 males and 5 females (CNIN); Ixtacomitan [17.42981, - 93.09721], 12.xii.1985, F. Arias, 1 female (CNIN); Ocosingo Chajul, Reserva Montes Azules [16.11260, -90.94089], 28.iv-5.v.1986, F. Arias, R. Barba & L. Cervantes, 1 male and 5 females (CNIN); same label information, except: 9-14.vii.1987, F. Arias & L. Cervantes, 3 males and 4 females (CNIN); 9-14.vii.1987, L. Cervantes & R. Barba, 1 female (CNIN); Tapachula, Finca La Chinita [14.90538, -92.26629], 19.iii.1985, H. Velasco, 1 male and 1 female (CNIN); same label information, except: 23.iii.1985, F. Arias, 1 female (CNIN); 30.viii.1985, F. Arias, 1 female (CNIN); Tapachula [14.90604, -92.26492], 16.iii.1985, F. Árias, 1 male (CNIN). Guerrero. Acahuizotla [17.36061, -99.46751], 28.i.1982, H. Brailovsky, 1 female (CNIN); same label information, except: E. Barrera, 1 female (CNIN); Tierra Colorada [17.16581, -99.52659], 12.xii.1977, J. Butze, 1 female (CNIN). Jalisco. Estación de Biología Chamela [19.49834, -105.04457], trampa de fermento, 4.x.1989, E. Ramírez, 1 female (EBCH); same label information, except: 24.iv.1991, 1 male (EBCH); 5.xii.1988, 1 male and 3 females (EBCH); 15.v.1989, 1 female (EBCH); 13.xi.1989, 2 males and 3 females (EBCH); 7.xii.1989, 1 female; 29.i.1990, 1 male and 1 female (EBCH); 2.ii.1990, 1 male and 3 females (EBCH); McPhail, 1-8.x.1991, 1 female (EBCH); 1-8.iii.1992, 2 males and 12 females (EBCH); 1-8.i.1992, 4 females (EBCH); Carretera Barra Navidad - Puerto Vallarta, km 70, San Mateo [19.57642, -105.08577], 16.x.1989, 1 male (EBCH). Mexico. Texcoco, San Dieguito [19.49015, -98.82432], [unknown date] F. Durán, 1 female (CNIN); Malinalco Malikualli [18.951311, -99.486200], 30.ix-28.x.2019, S. Rodríguez, C. Pedraza, E. Nuple, L. García, 2 females (CNIN, CARF); same label information, except: 30.ix.2019, 5 males (2 CNIN, 3 CARF) and 6 females (3 CNIN, 3 CARF). Morelos. Alpuyeca [18.74061, -99.26068], 1.ix.1983, A. Ibarra, 4 males and 5 females (CNIN); Yautepec [18.88905, -99.06186], [unknown date and collector] 1 female (CNIN). Oaxaca. Candelaria de Loxicha [15.92607, -96.48925], 10.ii.1982, M. Garcia, 2 male and 2 female (CNIN); same label information, except: 2.xii.1982, 1 male and 1 female (CNIN); A. Ibarra, 1 male and 1 female (CNIN); 2.xii.1982, A. Ibarra, 2 females (CNIN); Carretera Tuxtepec - Oaxaca, Metates [17.12447, -96.05514], 15.x.1990, E. Ramírez, 1 male and 1 female (CNIN); same label information, except: Metates, 1600 m, 3.iv.1982, A. Ibarra, 4 females (CNIN); km 10 Pochutla [15.73461, -96.46268], 8.ii.1982, M. Garcia, 1 male (CNIN); same label information, except: A. Ibarra, 1 male (CNIN); km 54 Tuxtepex - Oaxaca [18.07732, -96.14509], 28.iii.1984, H. Delfin, 1 male and 2 females (CNIN); same label information, except: M. Garcia, 1 female (CNIN); 24.ix.1982, A. Ibarra, 1 female (CNIN); km 206 carretera Oaxaca - Pto. Angel, Finca Pacífico [15.95793, -96.46188], 20.x.1990, E. Ramírez, 4 males and 3 females (CNIN); Pto. Eligio Sierra de Juarez [17.57863, -96.67088], 12.ix.1982, A. Ibarra, 4 males and 6 females (CNIN); San Mateo Yetla [17.75678, -96.31665], 20.xi.1990, E. Barrera & A. Cadena, 1 male (CNIN); Valle Nacional San Mateo Yetla [17.75678, -96.31665], 13.x.1990, E. Ramírez, 4 males and 1 female (CNIN); same label information, except: 12.x.1990, 4 males (CNIN); 11-13.ix.1982, A. Ibarra, 1 female (CNIN). Puebla. Xicotepec [20.261398, -97.963805], 15.x.2019, C. Pedraza-Lara, S. Rodríguez-González, L. GarcíaVázquez, S. Rodríguez, 4 females (2 CNIN, 2 CARF). Tamaulipas. Gómez Farías [22.88559, -99.02986], 5.x.1985, 1 male (CNIN). Veracruz. Estación Biológica Los Tuxtlas [18.48394, -95.00997], 20.vi.1988, V. Hernández & R. Pérez, 12 male and 8 females (CNIN); same label information, except: 10.vii.1988, 6 males and 11 females (CNIN); 17.ix.1988, 1 male (CNIN); 460 m, 18.ii.1986, P. Sinaca, 1 male and 3 female (CNIN); 460 m, 18.ii.1986, A. Ibarra, 2 males and 2 females (CNIN); 460 m, 18.ii.1986, E. Ramírez, 1 male and 1 female (CNIN); 160 m, 14.ii.1986, A. Ibarra, 2 males and 1 female (CNIN); 460 m, 14.vii.1986, A. Ibarra, 1 male (CNIN); 220 m, 2.v.1986, A. Ibarra, 1 male (CNIN); 480 m, 2.v.1986, A. Ibarra, 2 males (CNIN); 6.ii.1986, P. Sinaca, 1 male and 2 females (CNIN); 6.ii.1986, E. Ramírez, 1 male (CNIN); 5.viii.1985, E. Ramírez, 1 male and 1 female (CNIN); 12.viii.1985, P. Sinaca, 2 females (CNIN); 12.viii.1985, A. Ibarra, 1 male (CNIN); 27.x.1985, E. Ramírez, 1 female (CNIN); 7.x.1985, E. Ramírez, 1 male and 1 female (CNIN); 7.x.1985, P. Sinaca, 2 males and 2 females (CNIN); 28.ii.1985, P. Sinaca, 1 female (CNIN); 6.iii.1985, A. Ibarra, 1 male and 1 female (CNIN); 6.iii.1985, P. Sinaca, 1 male and 6 females (CNIN); 6.iii.1985, E. Ramírez, 1 female (CNIN); 170 m, 14.viii.1985, E. Ramírez, 1 male (CNIN); 170 m, 14.viii.1985, P. Sinaca, 1 female (CNIN); 480 m, 24.iv.1986, P. Sinaca, 1 male (CNIN); 14.iv.1986, A. Ibarra, 1 female (CNIN); 12.iv.1986, E. Ramírez, 1 female (CNIN); 24.ii.1985, H. Velasco, 1 female (CNIN); 10.xii.1984, A. Ibarra, 2 males and 2 females (CNIN); 13.iv.1986, A. Ibarra, E. Ramírez & P. Sinaca, 1 female (CNIN); 17.i.1986, F. Arias, 1 female (CNIN); 22.i.1986, F. Arias, 1 female (CNIN); 23.i.1986, F. Arias, 1 female (CNIN); 9.vii.1988, V. Hernández & R. Pérez, 1 male (CNIN); 12.iv.1986, A. Ibarra, 1 male and 3 females (CNIN); 160 m, 21.ii.1985, E. Ramírez, 1 male (CNIN); 160 m, 23.ii.1985, E. Ramírez, 1 male (CNIN); 13.ix.1985, F. Árias, 1 female (CNIN); 160 m, 18.iv.1985, A. Ibarra, 2 males and 3 females (CNIN); 160 m, 22.ii.1985, E. Ramírez, 1 female (CNIN); 8.x.1985, V. Hernández & E. Ramírez, 3 males and 3 females (CNIN); 160 m, 8.x.1985, V. Hernández & P. Sinaca, 1 female (CNIN); 22.vii.1979, R. Terron, 1 female (CNIN); Tajin [20.42991, -97.38140], 27.vi.1976, J. G. Figueroa, 1 female (CNIN); 12.viii.1992, J. Villa, 1 female (EBCH); 12.viii.1992, E. Ramírez, 1 male and 2 female (EBCH); Distribution. USA, Mexico (Baja California Sur, Campeche *, Chiapas *, Guerrero *, Jalisco *, State of Mexico *, Morelos *, Oaxaca *, Puebla *, Sonora, Tamaulipas *, Tabasco, Veracruz), Honduras, Nicaragua, El Salvador, Costa Rica, Panama, Colombia, Trinidad and Tobago, Guyana, Ecuador, Bolivia, Brazil (Sepúlveda & de Carvalho 2016). Remarks. There are morphological variations in this species: flagellomere ranging from yellow to light brown; dorsal stripe on abdomen present or absent; and a different number of spots on the femora.

Published as part of Gomes, Lucas R. P., Sepúlveda, Tatiana A. & Pedraza-Lara, Carlos, 2023, Neriidae (Diptera: Schizophora) from Mexico: new species, new records and an identification key, pp. 27-46 in Zootaxa 5264 (1) on pages 36-38, DOI: 10.11646/zootaxa.5264.1.2, http://zenodo.org/record/7836092