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

( Figs. 1 ; 6 A–F; 10 A–B)

Diagnosis. The only Neotropical species of Monohelea in which the males have brown legs with yellowish bands, hind femur with two mesal yellowish bands, paramere with two apical hook-shaped processes, one 2X longer than other, aedeagus with base greatly expanded. Female unknown.

Male. Head: eyes widely separated ( Fig. 6 C ). Antenna missing. Palpus ( Fig. 6 D ) brown; 3rd segment nearly oval, with large, deep, sensory organ on distal 1/2; lengths of segments 15- 28- 30- 25- 50; palpal ratio 1.5.

Thorax. Brown, with pattern of yellowish patches, not defined on slide mounted specimen. Legs ( Fig. 6 E ) brown; coxae and trochanters brown; femora with two mesal yellowish bands; tibiofemora joints yellowish; tibiae with subbasal and mesal yellowish bands; hind tibial comb with 6 bristles. Tarsi: pale; fore tarsus missing; hind tarsomere 1 with one basal and one apical spine; midtarsomere 1 with 2 basal, 2 apical spines; apical spines of mid-, hind tarsomeres 2–4: 2-2-1, 1-1-1, basal spines absent; mid-, hind tarsal ratios 2.23, 1.82; claws missing. Wing ( Fig. 6 A ): macrotrichia restricted to vein costa; microtrichia absent; 2nd radial cell nearly 2X longer than 1st; wing length 1.02 mm, width 0.40 mm; costal ratio 0.75. Halter stem pale; knob brown in distal 1/2 ( Fig. 6 B ).

Abdomen. Brown. Genitalia ( Figs. 6 F ; 10 A–B): 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, with a submesal internal sclerotized projection; gonostylus nearly straight 0.88X as long as gonocoxite, moderately pilose on basal 3/4. Parameres swollen ( Fig. 10 A ) 2.2X as long as aedeagus, largely fused dorsally at base; apical portion with two strong hook-shaped processes laterally directed, one 2X longer than other. Aedeagus ( Fig. 10 B ) triangular, composed of 2 pointed ventral plates, each with a delicately sclerotized apical projection, which arises in the aedeagus base; basal arms large, greatly expanded laterally.

Female. Unknown.

Distribution. Brazil, Pará State.

Type. Holotype male, on microscope slide labeled “Vila Santa Maria (01°01’45”S, 46°57’21”W), Tracuateua, Pará, BRASIL, 27–28.II.2007, CDC light trap, peridomicile, Gorayeb, I & Guimarães, D. cols. ( MPEG).

Etymology. This species is named after Dr. Inocêncio Gorayeb that provided kind support for the studies of Ceratopogonidae fauna from Pará State.

Taxonomic discussion. Characters for distinguishing Monohelea gorayebi 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 6. Monohelea gorayebi Felippe-Bauer & Trindade sp. nov., male. A. Wing; B. Thorax showing halter; C. Head, anterior view; D. Palpus, lateral view; E.Legs (left to right) of fore, mid-, hindlegs, lateral view; F. 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.