Scutops lopesi Amorim & Vasconcelos, 1989: 39 Mathis & Rung, 2011: 359 Taxonomic revision of the Neotropical genus Scutops Coquillett, 1904 (Diptera: Periscelididae) Freitas, Geovânia Ale-Rocha, Rosaly Zootaxa 2023 2023-02-22 5244 5 401 427 6XYGD Amorim & Vasconcelos, 1989 Amorim & Vasconcelos 1989 [151,696,748,775] Insecta Periscelididae Scutops Animalia Diptera 11 412 Arthropoda species lopesi  ( Figs 9– 10, 19E, 21)      Scutops lopesi Amorim & Vasconcelos, 1989: 39( Figs. 4–7);  Mathis & Rung, 2011: 359(world catalog).   Diagnosis.Frons yellow with a vertical median, pale brown, oval spot small, above base of antennae; ocellar triangle brown; silver pruinescent band adjacent to posterior margin of eye reaching the gena; scutum brown with a median, yellow, triangular elongate stripe reaching the presutural region; 1 dorsocentral seta; fore first tarsomere enlarged; hyaline transversal preapical band of the wing incomplete.    Holotypemale. Redescription. Body length: 4.0 mm; wing: 3.6 mm. Head( Figs 9A–C). Frons yellow with a vertical median pale brown small oval spot above antennae; ocellar triangle brown; fronto-orbital inconspicuous, short, sparse, thin, and brown. Face whitish yellow; dorsal portion higher than wide in frontal view, slightly convex and apical margin subtriangular. Gena and postgena yellow, with long, thin, brown setae. Occiput with sparse, short, thin and brown setae; silver pruinescent band adjacent to posterior margin of eye reaching the gena. Antenna yellow; pedicel with four dorsal setae dark brown and robust; arista with ten dorsal and four ventral branches. Buccal pieces brown. Thorax( Figs 9A, C). Scutum brown with a median yellow wide stripe, triangular anteriorly, from presutural region to posterior margin of scutum, and a dorsocentral slender yellowish-brown inconspicuous stripe from postpronotal lobe to postalar callus; postpronotal lobe whitish yellow with dense silvery pruinescence; notopleuron and supra-alar area yellow, with dense silvery pruinescence; scutellum yellow with lateral margin brown; subscutellum brown; pleura brown, anepisternum shiny brown. Setae: 1 dorsocentral; katepisternal setae similar in length; distal scutellar about 4/5 the length of basal seta. Legs( Fig. 9A). Coxae brown, mid and hind coxa slightly paler; trochanters pale brown; femora brown with apical portion yellow; foretibia brown, mid and hindtibia yellow with a sub basal and a preapical brown ring, preapical ring incomplete; tarsus yellow. Forefemur with posteroventral setae developed; first fore tarsomere broadened and midtibia with apicoventral spine black. Wing( Fig. 19E) gently brownish, darkened at distal half of anterior margin, with base of costal cell yellow, transversal preapical hyaline band short, incomplete. Halter yellow. Abdomen( Fig. 9A). Tergites and sternite brown. Terminalia ( Figs 10A–C): epandrium as high as wide in posterodorsal view; cercus ovoid, elongate; postgonite small, concave anteriorly and rounded posteriorly in lateral view; hypandrium + phallapodeme with anteroventral rounded lobe in lateral view; phallus slender, long, about 2.5 times longer than hypandrium + phallapodeme, membranous, sclerotized laterally; ejaculatory apodeme truncate apically.  Female. As in male. Terminalia ( Fig. 10D): tergite and sternite 7 forming a ring wider than high; sternite 8 broad, hemispheric and with dorsal margin slightly concave; cercus subrectangular.  Locality records: Brazil(Amazonas*, Maranh„o*, Rio de Janeiro), Ecuador( Orellana), Venezuela( Amazonas) ( Fig. 21).  Type material examined:  Holotypemale ( MZSP). [ BRAZIL], [  Rio de Janeiro], Grajahú[Grajaú [ 22°55′57.5′ ′S 43°16′30.0′′W], ( Lopes& Oliveira), 28.vii. [1]941, on foliage in shady places (printed on white paper). Holotype condition: forelegs, except coxae, lost; right wing damaged at section between R 2+3–R 4+5; not dissected.   FIGURE 9.  Scutops lopesi Amorim & Vasconcelos, 1989. A–C (holotype). A. Habitus, lateral view; B. Head, frontal view; C. Thorax, dorsal view.   FIGURE 10.  Scutops lopesi Amorim & Vasconcelos, 1989. A–C male (Brazil, Amazonas), D female (Ecuador, Orellana). A. Epandrium, postgonite and cercus, posterodorsal view; B. Same, plus hypandrium+phallapodeme and phallus, lateral view; C. Ejaculatory apodeme; D. Female terminalia, posteroventral view.   Paratypes: [ BRAZIL], [  Rio de Janeiro], Grajahú[Grajaú], ( Lopes& Oliveira) 1 female( MZSP), 10.viii.[1]941; idem 23.i.[19]36, ( H. S. Lopes), 1 female( MZSP).  Additional material examined:  BRAZIL, Amazonas, Paraná do Xiboreninho, 03º15′S– 60º00′W,  6.viii.1979, ( Adis, Erwine Montgomery), mixed water, Innundation forestcanopy fogget with Pyrethrumtray 337, 1 female( NMNH); [Manaus], Reserva F[lorestal] Adolpho Ducke[ 2°57′33.2″S 59°55′27.0″W], Platô Trilha Norte/ Sul, 26.xii.06–11.i/07, Arm[dilha] suspensa amarela Dossel( Feitosa, M.& Freitas, G. Cols), 1 male( INPA);  Rio Tarumã Mirim, 2kmfrom Rio Negro, 03º02′S– 60º17.2′W, 30. July.79, Igapó, Blackwater imundation forest canopy fogged with Pyrethrum, Canopy Fogging Project, TRS#03, Tray# 250 ( Adis, Erwin, Montgomery et.al.,collectors) 1 male( NMNH);   Maranhão, Parque Estadual Mirador[ 6°24′41.0″S 44°28′41.9″W], Base da Geraldina, Armadilha Luminosa,  22.ii–01.iii.2009, M.B. Aguiar-Neto, & M.J.A. Holanda, 1female( CZMA).  ECUADOR,  Orellana, Res. Etnica Waorani, 0º39.4′S, 76º27.2′W,  216m, lot# 1542,  21.vi.1996, ( T. L. Erwin), 1 male( NMNH); idem, lot# 1145,  1.vii.1995, ( T. L. Erwin), 1 male( NMNH); idem, lot# 1720,  2.x.1996, 1 female( NMNH).  VENEZUELA, T.F.A., Basecamp01°51ʹN, 66°10ʹW, Cerro de la Neblica  140m,  20–24 March 1984, O.Flint& J. Louton, Malaise trap, 1 female( USNM).  Variations: Coloration of vertical brown spot on the frons varies from pale brown, almost imperceptible, to dark brown.   Comments: The missing structures of the holotypewere redescribed based on the original description and paratypes.  Scutops lopesiand  S. marcgrafiare very similar species, both with an elongated acrostichal yellow stripe on the scutum, the legs are predominantly brown and the hyaline preapical band in the wing is incomplete. It is very difficult to distinguish these two species. The male of  S. marcgrafiis unknown, and the female holotypecannot be dissected. So, the distinction between these two species is tentatively made based on coloration of the thorax and frons, as presented by Amorim & Vasconcelos (1989)and as cited in the key. It is noteworthy that the paler brown median spot below the ocellar tubercle on the frons of  S. lopesiis not always evident in other specimens of  S. lopesi. This medial ocellar tubercle is absent in the holotypeof  S. marcgrafi. 4035851343 MZSP Lopes & Oliveira Brazil -22.9325 Grajahu -43.275 11 412 1 Rio de Janeiro holotype 4035851309 [199,1436,1749,1775] MZSP Lopes & Oliveira Brazil Grajahu 12 413 2 2 Rio de Janeiro paratype 4035851312 [151,717,1785,1811] MZSP H. S. Lopes Brazil Grajahu 12 413 1 1 Rio de Janeiro paratype 4035851310 1979-08-06 NMNH Adis & Erwin & Montgomery Brazil Amazonas -3.25 Innundation forest 1307 -60.0 Xiboreninho 12 413 1 1 Parana 4035851315 INPA Feitosa, M. & Freitas, G Brazil -2.9592223 Adolpho Ducke 1 -59.924168 12 413 1 1 4035851311 NMNH Adis & Erwin & Montgomery Brazil 13 414 -3.0333333 Rio Negro 930 -60.286667 Rio Taruma Mirim 12 413 1 1 4035851317 2009-02-22 2009-03-01 2009-02-22 CZMA M.B. Aguiar-Neto & M. J. A. Holanda Brazil -6.411389 Parque Estadual Mirador 1 -44.478306 13 414 1 1 Maranhao 4035851366 1996-06-21 T, NMNH L. Erwin Ecuador 216 -0.6566667 Res. Etnica Waorani 130 -76.45333 13 414 1 1 Orellana 4035851368 1995-07-01 T, NMNH Erwin Ecuador 216 -0.6566667 Res. Etnica Waorani 130 -76.45333 13 414 1 1 Orellana 4035851333 [648,1168,259,285] 1996-10-02 NMNH Erwin Ecuador 216 -0.6566667 Res. Etnica Waorani 130 -76.45333 13 414 1 1 Orellana 4035851367 1984-03-20 1984-03-24 1984-03-20 USNM O. Flint & J. Louton Venezuela 140 Cerro de la Neblica Basecamp 13 414 1 1