Furciseta hyalipennis, Câmara, J. T. & Rafael, J. A., 2013

Câmara, J. T. & Rafael, J. A., 2013, A new species of Furciseta (Diptera, Ctenostylidae) from the Brazilian Amazon, Zootaxa 3669 (2), pp. 147-152 : 148-152

publication ID

https://dx.doi.org/10.11646/zootaxa.3669.2.5

publication LSID

lsid:zoobank.org:pub:86F668DB-90E6-45E2-93BD-0F541836402F

DOI

https://doi.org/10.5281/zenodo.6159059

persistent identifier

https://treatment.plazi.org/id/03DC87B9-FFA6-FFB5-0AFD-FABEFB15FD66

treatment provided by

Plazi

scientific name

Furciseta hyalipennis
status

n. sp.

Furciseta hyalipennis n. sp.

( Figs. 1–22 View FIGURES 1 – 11 View FIGURES 12 – 20 View FIGURES 21 – 23 )

Male ( Fig. 1 View FIGURES 1 – 11 ). General colouration yellowish brown with legs yellow and thorax spotted yellowish brown. Head: Holoptic, more bulky than thorax ( Figs. 1, 4 View FIGURES 1 – 11 ). Frons brown with brown pruinescence, protuberant near antennae ( Figs. 1, 2 View FIGURES 1 – 11 ), with brown bifid prominence near protuberance and small yellow lateroinclinate setae ( Fig. 3 View FIGURES 1 – 11 ). Ocelli absent ( Fig. 4 View FIGURES 1 – 11 ). Vertex with 1 pair of convergent vertical setae ( Fig. 3 View FIGURES 1 – 11 ). Postcranium yellow except for brown dorsal sutures, with yellow setae ( Fig. 3 View FIGURES 1 – 11 ). Postocular row of setae restricted to ventral half of occiput. Antennal sockets separated by frontal protuberance. Face divergent, yellow, with median sclerotized zone more or less differentiated from lateral zones, without transparent area ( Fig. 2 View FIGURES 1 – 11 ). Eye with upper ommatidia slightly larger than lower ommatidia. Antenna yellow ( Figs. 1, 3 View FIGURES 1 – 11 ); pedicel with long and distinct anterodorsal setae ( Fig. 3 View FIGURES 1 – 11 ); flagellomere 1 narrowed to the apex, with arista inserted near the base, ( Fig. 3 View FIGURES 1 – 11 ); arista simple ( Fig. 3 View FIGURES 1 – 11 ). Parafacial narrow, setulose. Proboscis greatly reduced and palpus yellow.

Thorax mainly brown, with yellow stripes on mesonotum ( Fig. 4 View FIGURES 1 – 11 ) Postpronotal lobe with 3–4 small setae. Mesoscutum with numerous short yellow reclinate setulae; including apparently triseriate acrostichals; and larger setae including 4 uniseriate dorsocentral setae, 1 postalar, 2 postsutural supra-alars, 1 posterior notopleural, 2 pairs scutellars. Notopleuron bare. Proepisternum with 9 setae. Prothoracic spiracle subovate, bare. Posteroventral margin of anepisternum and median part of anepimeron setulose. Legs yellow, except apical half of hind tibia and hind tarsomeres dark brown ( Fig. 1 View FIGURES 1 – 11 ). Legs narrow, with small setae.

Wing hyaline with yellow veins ( Figs. 1, 5 View FIGURES 1 – 11 ). Humeral vein absent. Costal vein extending to vein M. Vein Sc incomplete. Vein R 1 with sparse, weak dorsal setulae. Pterostigma absent. Veins R 2 + 3 and R 4 + 5 strongly divergent. Vein R 2 + 3 inserted between level of bases of M and CuA 2 +A 1. Crossvein r-m placed just after middle of cell dm. Basal part of vein M short. Vein CuA 2 +A 1 incomplete. Vein A 2 very weak present as a fold. Alula present (folded in the figure). Halter with light-yellow stem and dark-brown knob ( Fig. 4 View FIGURES 1 – 11 ).

Abdomen ( Fig. 1 View FIGURES 1 – 11 ) mainly brown, except tergite 1 and base of tergite 2 yellow, tergites 4 and 5 with paramedian black spots ( Figs. 1, 6 View FIGURES 1 – 11 ), sternites 1–3 and 8 yellow. Tergites rather weakly sclerotized ( Fig. 6 View FIGURES 1 – 11 ). Sternites apparently less sclerotized than tergites ( Fig. 6 View FIGURES 1 – 11 ). Sternites 1 and 2 rather fused; sternite 2 subtrapezoidal; sternites 3 and 4 each consisting of pair of small rounded sclerites; sternite 5 largest, wider than long, subtriangular; sternites 6, 7 and remnants of tergite 7 and 8 (at the right side) subrectangular. All spiracles positioned in the membrane.

Terminalia: Epandrium subglobose ( Fig. 4 View FIGURES 1 – 11 ); subepandrial sclerite narrow in ventral view ( Fig. 8 View FIGURES 1 – 11 ). Surstylus rather membranous, with small spiniform setae on inner face ( Figs. 8, 9 View FIGURES 1 – 11 ). Cercus large, setulose ( Fig. 7 View FIGURES 1 – 11 ). Hypandrium weakly sclerotized ( Figs. 9, 11 View FIGURES 1 – 11 ). Ejaculatory apodeme longer than phallapodeme ( Figs. 7, 8 View FIGURES 1 – 11 ), with translucent base ( Fig. 10 View FIGURES 1 – 11 ). Phallapodeme partially fused to base of hypandrium ( Figs. 7, 9, 11 View FIGURES 1 – 11 ). Phallus long, curved, bare, narrowed subapically, ribbon-like, rather membranous.

Specimen length: 4.3 mm; wing length: 3.1 mm.

Female ( Fig. 12 View FIGURES 12 – 20 ): similar to male, except head dichoptic with dorsal and ventral ommatidia of subequal size ( Figs. 12, 13, 16 View FIGURES 12 – 20 ); eye smaller than in male. Frons yellow with brown spots at base of anterior prominence and at apex, near antennae ( Figs. 12, 16 View FIGURES 12 – 20 ). Face subrectangular, concave ventrally ( Fig. 14 View FIGURES 12 – 20 ). Flagellomere 1 subovate with deep depression in which arista is inserted ( Figs. 15, 16 View FIGURES 12 – 20 ). Arista branched with 2 stems ( Figs. 13, 15 View FIGURES 12 – 20 ). Wing hyaline, inconspicuously and narrowly infuscate near costal margin ( Fig. 17 View FIGURES 12 – 20 ). Tergites 4–6 with paired paramedian black spots ( Figs. 18, 19 View FIGURES 12 – 20 ). Terminalia: sternite 2 subrectangular; sternites 3–6 each consisting of pair of small rounded setulose sclerites ( Fig. 19 View FIGURES 12 – 20 ). Tergosternite 7 enlarged, rather cylindrical, sclerotized, fused laterally ( Figs. 20 View FIGURES 12 – 20 ). Tergosternite 8 and cerci lost.

Specimen length: 4.5 mm; wing length: 2.9 mm.

Geographical records. Brazil (Amazonas and Maranhão).

Material examined. Holotype 3 (pinned): “ BRASIL, Amazonas, Manaus, F.[azenda] P.[orto] Alegre BR 174 Km 68 / 17–21.i. 1994. F.F. Xavier”, “ Furciseta hyalipennis Holótipo 3 ” (INPA). Paratypes: “ BRASIL, Amazonas, Manaus, Res[erva] 1113 R.L.O. 24.vii. 1986. Bert Klein” (13, INPA). “ BRASIL, Amazonas, Manaus, AM 0 10 Km 31, Embrapa 18.iii. 1992. L.P.Alburquerque, J. Bindá” (1 Ƥ, INPA). “ Brasil, MA[ranhão], Mirador, Parque Est[adual] Mirador, Base da Geraldina/luz, 21–25.vi. [20]07. F.L.Limeira col.” (1 3, CZMA).

Holotype condition. Pinned, left wing lost; right wing mounted on a microslide and terminalia were placed in microvial with glycerin and both pinned along with the specimen.

Etymology. From the Latin hyalinus = glassy and pennis = wing, referring to the hyaline wings.

Discussion. Furciseta was characterized by Korneyev (2010) by having vein M absent at the level of cell bm. In the new species, vein M is present basally on cell bm. Furciseta hyalipennis n. sp. can be separated from F. plaumanni (Henning) by the key characters presented above.

Acknowledgements

We thank Dr. Francisco Limeira-de-Oliveira, curator of the Coleção Zoológica do Maranhão (CZMA) for the loan of the specimens; Ms Eileen M. Evans-Nantais for permission to use figure 70.23 from the Manual of Central America Diptera ; Dr. Adrian Plant for helping with English; the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the award of a fellowship to J.A.R. (grant 300305 / 2007 – 9); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for the Ph.D. scholarship to J.T.C.; the Fundação de Amparo à Pesquisa do Estado do Amazonas, Programa de Apoio a Núcleos de Excelência (Pronex) (FAPEAM, Edital 016/ 2006, Proc. 1437 / 2007) and CNPq for financial support (Proc. 472237 / 2009 - 8).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Ctenostylidae

Genus

Furciseta