Mitinha, Rafael & Limeira-De-Oliveira, 2014

Rafael, J. A. & Limeira-De-Oliveira, F., 2014, Mitinha and Tamanduamyia, two new genera of Mythicomyiinae (Diptera, Mythicomyiidae) from northeast Brazil, Zootaxa 3827 (4), pp. 591-598: 592

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gen. nov.

Mitinha   , gen. nov.

( Figs 1–11 View FIGURES 1–11 )

Type-species: Mitinha neri   , sp. nov. by present designation. Gender masculine.

Diagnosis. This genus has typical Mythicomyiinae   wing venation: vein R 2+3 ending in R 1 before junction with costa forming a small triangular cell r1, and vein R 4+5 ending in costa at a level clearly beyond end of vein M 2 ( Fig. 3 View FIGURES 1–11 ). It can be separated from other genera in the subfamily by the following combination of characters: antennal stylus placed apically on second flagellomere ( Fig. 2 View FIGURES 1–11 ); costal vein circumambient; vein R 4+5 gently sinuous; r-m crossvein placed slightly beyond basal third of cell dm; cell dm short; crossvein dm-cu slightly longer than m-m crossvein; vein M 1 rather straight, more than two times cell dm length; vein A 1 short, stopping at alular incision level; anal lobe not keel-shaped ( Fig. 3 View FIGURES 1–11 ); three spermathecae; sperm pump jar-shaped with translucent dilation ( Fig. 9 View FIGURES 1–11 ); each spermathecal duct extremely elongated, twisted, spiraled distally ( Fig. 10 View FIGURES 1–11 ).

Etymology. The generic epithet Mitinha   is a noun in apposition and refers to the nickname of José Wilmington Paes Landim Ribeiro, administrator of the Parque Nacional Serra das Confusões, who helped us with field logistics, transportation and laboratory facilities.

Distribution. State of Piauí, Brazil, Parque Nacional Serra das Confusões, one of the more arid places in Northeast Brazil, with typical Caatinga vegetation.

Discussion. Within Mythicomyiinae   , Mitinha   shares the apical stylus with Mythenteles Hall & Evenhuis   but can be easily separated from it by the circumambient costal vein (costa incomplete, stopping between R 4+5 and M 1 in Mythenteles   ( Fig. 22 View FIGURES 21–25 )); it shares the circumambient costa and small dm cell with Reissa Evenhuis & Baéz   but can be separated from that by the apical stylus (subapical in Reissa   ), r-m crossvein placed slightly beyond the basal third, and cell dm rather parallel sided and same length as last section of vein CuA 1 (r-m placed slightly before middle and cell dm rather angulated and shorter than last section of vein CuA 1 in Reissa   ( Fig. 23 View FIGURES 21–25 )).