Monohelea visinensis Felippe-Bauer & Trindade, 2017

Felippe-Bauer, Maria Luiza, Cardoso, Erick Aragão & Trindade, Rosimeire Lopes Da, 2017, New species and new records of Monohelea Kieffer from eastern Amazon, Brazil (Diptera: Ceratopogonidae), Zootaxa 4358 (1) : -

Monohelea visinensis Felippe-Bauer & Trindade sp. nov.

( Figs. 1 ; 8 A–E; 10 E–F)

Diagnosis. The only Neotropical species of Monohelea in which the males have brown legs, hind femur with two mesal yellowish bands, paramere with two pointed apical processes and a ventral, sclerotized oval structure, aedeagus with basal arms slender, slightly expanded laterally. Female unknown.

Male. Head: eyes widely separated. Antenna pale brown with pedicel darker; flagellomeres 1–9 with lengths 113- 35- 35- 33- 30- 30- 28- 30- 25, 38, 11-13 missing. Antennal ratio untold. Palpus ( Fig. 8 C ) pale brown; 3rd segment compressed, nearly oval with large, moderately deep, sensory organ on distal 1/2; palpal ratio untold.

Thorax. Brown; scutum without definite pattern on slide mounted specimen; scutellum yellowish laterally, with 4 bristles. Legs ( Fig. 8 D ) brown; coxae and trochanters brown; femora with two mesal yellowish bands; tibiofemoral joints yellowish; tibiae with subbasal and mesal yellowish bands; hind tibial comb with 6 bristles. Tarsi: pale; fore-, hind tarsomere 1 with one basal and one apical spine; midtarsomere 1 with 1 basal, 2 apical spines; apical spines of midtarsomeres 2–4: 1-1-1, basal spines absent; fore-, hind tarsomeres 2–4 missing; mid tarsal ratio 2.50; median claws small, paired, equal-sized, 0.4X as long as 5th tarsomeres. Wing ( Fig. 8 A ): macrotrichia restricted to vein costa; microtrichia absent; 2nd radial cell damaged; wing length 0.81 mm, width 0.30 mm; costal ratio nearly 0.74. Halter stem pale; knob brown in distal 1/2 ( Fig. 8 B ).

Abdomen. Brown. Genitalia ( Figs. 8 E ; 10 E–F): sternite IX spiculate except on basal portion, posterior margin not defined; tergite IX tapering with a pair of apicolateral processes. Gonocoxite moderately stout, nearly 2X longer than basal width; gonostylus near straight 0.81 as long as gonocoxite, moderately pilose on basal 1/2. Parameres swollen ( Fig. 10 E ) 1.08X as long as aedeagus, broadly fused at trilobed base; each with a ventral sclerotized oval structure bearing two sharp apical processes, one hook-shaped laterally directed and other aculeated anteroventraly directed. Aedeagus ( Fig. 10 F ) triangular, composed of 2 pointed ventral plates, with slightly sclerotized dorsal structure, which arises in the middle way to aedeagus base and produced beyond the apices of ventral plates, ending as an apical projection; basal arms slender, slightly expanded laterally.

Female. Unknown

Distribution. Brazil, Pará State.

Type. Holotype male, on microscope slide labeled “Fazenda Ema (01°24’37”S, 46°22’12”W), Viseu, Pará, BRASIL, 23–24.VI.2007, CDC light trap, forest, Guimarães, D. col. ( MPEG).

Etymology. This species is named in tribute of the municipality of Viseu, where the specimen was collected.

Taxonomic discussion. Characters for distinguishing Monohelea visinensis from the related species may be found in the discussion under the description of the M. barbara .

Figures

FIGURE 1. Distribution of Monohelea species in the Municipalities of Capitão Poço, Ourém, Tracuateua and Viseu from Northeast Mesoregion, and in the municipality of Santa Bárbara do Pará from Metropolitan Belém Mesoregion, Para State, Brazil.

FIGURE 8. Monohelea visinensis Felippe-Bauer & Trindade sp. nov., male. A. Wing; B. Thorax showing halter; C. Palpus, lateral view; D. Legs (left to right) of fore, mid-, hindlegs, lateral view; E. Genitalia, ventral view.

FIGURE 10. Parameres and aedeagus. A–B. Monohelea gorayebi Felippe-Bauer & Trindade sp. nov.; C–D. Monohelea patauateua Felippe-Bauer & Trindade sp.nov.; E–F.Monohelea visinensis Felippe-Bauer & Trindade sp. nov.