Monohelea patauateua 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 patauateua Felippe-Bauer & Trindade sp. nov.

( Figs. 1 ; 7 A–H; 10 C–D)

Diagnosis. Only Neotropical species of Monohelea with following combination of features: legs yellowish, hind femur with brown base, mid leg without distinct mesal brown marks. Males: paramere single, slender and flattened without mesal or apical process.

Male. Head: eyes widely separated ( Fig. 7 E ). Antenna yellowish brown with pedicel darker; flagellomeres 1– 13 with lengths 98- 30- 30- 30- 28- 28- 25- 28- 25- 38- 93- 98- 98 ( Fig. 7 C ). Antennal ratio 1.01. Palpus yellowish brown; 3rd segment nearly oval with small, shallow, sensory organ on mid portion; lengths of segments 15- 25- 30- 25- 43; palpal ratio 1.7-1.8 (1.7, n=2).

Thorax. Without definite pattern on slide mounted specimens. Legs ( Fig. 7 F ) yellow; coxae and trochanters brown; fore femora with basal brown bands and mesal brown stripe, mid femur with basal brown band, hind femur with basal brown band, mesal brown stripe and subapical ventral brown spot; tibiae brown apically; hind tibia with a subbasal ventral brown spot, brown stripe in middle; hind tibial comb with 5–6 bristles. Tarsi: pale; fore-, hind tarsomere with one basal and one apical spine; mid tarsomere 1 with 1–2 (usually 2) basal and 2 apical spines; apical spines of tarsomeres 2–4 of fore-, mid-, hind legs: 1-1-1 or 2-2-2, 2-2-2, 1-1-1, basal spines absent; fore tarsal ratio 2.06–2.25 (2.19, n=4), mid tarsal ratio 2.34–2.36 (2.35, n=2), hind tarsal ratio 2.00 (n=3); claws small, paired, equal-sized, 0.41–0.47 (n=3)X as long as 5th tarsomeres. Wing ( Fig. 7 A ): macrotrichia restricted to vein costa; microtrichia absent; 2nd radial cell nearly 1.9X longer than 1st; wing length 0.81–0.82 (0.82, n=4) mm, width 0.29–0.31 (0.30, n=4) mm; costal ratio 0.75–0.79 (0.76, n=4). Halter stem pale; knob pale brown in distal 1/2, a pale brown spot laterally ( Fig. 7 D ).

Abdomen. Yellowish brown. Genitalia ( Figs. 7 G ; 10 C–D): sternite IX spiculate except on basal portion, posterior margin not defined; tergite IX tapering with a pair of apicolateral processes, each with 4 setae. Gonocoxite moderately stout, nearly 2X longer than basal width; gonostylus brown, slender, slightly curved 0.55– 0.60 (0.58, n=5) as long as gonocoxite, moderately pilose on basal 3/4. Parameres ( Fig. 10 C ) 1.35–1.55 (1.42, n= 5) X as long as aedeagus, narrowly fused at trilobed base; stem slender flattened, tapering to apex. Aedeagus ( Fig. 10 D ) triangular, composed of 2 pointed ventral plates, each with only delicately sclerotized apical projection, 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. Similar to male with usual sexual differences; eyes contiguous; antenna missing; palpal ratio 1.75; mandible with 10 teeth. Wing ( Fig. 7 B ) length 0.86 mm; width 0.35 mm; costal ratio 0.80. Legs as in male; fore-, mid-, hind tarsal ratios 2.22, 2.56, 2.14; fore-, mid claws about 0.70X as long as 5th tarsomeres, hind claw 1.45X as long as 5th tarsomere. Two unequal spermathecae ( Fig. 7 H ), measuring 68 by 60 µm and 40 by 40 µm, the larger one with sclerotized neck with 12,5 µm.

Distribution. Brazil, Pará State.

Types. Holotype male, on microscope slide labeled “Fazenda Gavião Real (01°29’44”S, 47°13’07”W), Vila de Patauateua, Ourém, Pará, BRASIL, 29–30.XI.2008, CDC light trap, Forest, Trindade R.L. & Guimarães D. cols. (MPEG). Allotype female: same data as holotype (MPEG). Paratypes, 4 males: same data as holotype (2 MPEG; 2 CCER).

Etymology. This species is named after the type locality.

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

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 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.

FIGURE7. Monoheleapatauateua Felippe-Bauer &Trindadesp. nov., male.A.Wing;C. Antenna.D.Thorax showinghalter; E. Head, anterior view; F.Legs (left to right) of fore, mid-, hindlegs, lateral view; G.Genitalia, ventral view.Female.B. Wing; H. Abdomen, ventral view, showing spermathecae.