Scutops lopesi Amorim & Vasconcelos, 1989

Freitas, Geovânia & Ale-Rocha, Rosaly, 2023, Taxonomic revision of the Neotropical genus Scutops Coquillett, 1904 (Diptera: Periscelididae), Zootaxa 5244 (5), pp. 401-427 : 412-414

publication ID

https://doi.org/ 10.11646/zootaxa.5244.5.1

publication LSID

lsid:zoobank.org:pub:0946286E-042C-4BCB-BDFD-C3ADFEA75AF1

DOI

https://doi.org/10.5281/zenodo.7663718

persistent identifier

https://treatment.plazi.org/id/594887FE-7F69-D55C-47EA-14F4B2AAFD2A

treatment provided by

Plazi

scientific name

Scutops lopesi Amorim & Vasconcelos, 1989
status

 

Scutops lopesi Amorim & Vasconcelos, 1989 View in CoL

( Figs 9– 10 View FIGURE 9 View FIGURE 10 , 19E View FIGURE 19 , 21 View FIGURE 21 )

Scutops lopesi Amorim & Vasconcelos, 1989: 39 View in CoL ( Figs. 4–7 View FIGURE 4 View FIGURE 5 View FIGURE 6 View FIGURE 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.

Holotype male. Redescription. Body length: 4.0 mm; wing: 3.6 mm. Head ( Figs 9A–C View FIGURE 9 ). 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 View FIGURE 9 ). 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 View FIGURE 9 ). 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 View FIGURE 19 ) 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 View FIGURE 9 ). Tergites and sternite brown. Terminalia ( Figs 10A–C View FIGURE 10 ): 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 View FIGURE 10 ): 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 View FIGURE 21 ).

Type material examined: Holotype male ( 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. GoogleMaps

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, Erwin e Montgomery), mixed water, Innundation forest canopy fogget with Pyrethrum tray 337, 1 female ( NMNH) GoogleMaps ; [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) GoogleMaps ; Rio Tarumã Mirim, 2km from Rio Negro , 03º02′S – 60º17.2′W, 30. July. 79, Igapó, Black water imundation forest canopy fogged with Pyrethrum, Canopy Fogging Project, TRS#03, Tray # 250 (Adis, Erwin, Montgomery et.al.,collectors) 1 male ( NMNH) GoogleMaps ; 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) GoogleMaps . ECUADOR, Orellana, Res. Etnica Waorani , 0º39.4′S, 76º27.2′W, 216m, lot# 1542, 21.vi.1996, ( T. L. Erwin), 1 male ( NMNH) GoogleMaps ; idem, lot# 1145, 1.vii.1995, ( T. L. Erwin), 1 male ( NMNH) GoogleMaps ; idem, lot# 1720, 2.x.1996, 1 female ( NMNH) GoogleMaps . VENEZUELA, T.F.A., Basecamp 01°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 holotype were redescribed based on the original description and paratypes. Scutops lopesi and S. marcgrafi are 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. marcgrafi is unknown, and the female holotype cannot 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. lopesi is not always evident in other specimens of S. lopesi . This medial ocellar tubercle is absent in the holotype of S. marcgrafi .

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

NMNH

Smithsonian Institution, National Museum of Natural History

INPA

Instituto Nacional de Pesquisas da Amazonia

T

Tavera, Department of Geology and Geophysics

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Periscelididae

Genus

Scutops

Loc

Scutops lopesi Amorim & Vasconcelos, 1989

Freitas, Geovânia & Ale-Rocha, Rosaly 2023
2023
Loc

Scutops lopesi

Mathis, W. N. & Rung, A. 2011: 359
Amorim, D. de & Vasconcelos, C. M. de 1989: 39
1989
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF