Blepharoneura brevivittata Norrbom & Condon 2010, new species (original) (raw)
2010
Abstract
<i>Blepharoneura brevivittata</i> Norrbom & Condon, new species Figs. 17–20, 96–97, 124, 127 <b>Diagnosis.</b> This species is among the <i>Blepharoneura</i> species with the apical part of the wing obliquely banded, usually without marginal hyaline marks in cell r2+3. It differs from the other obliquely banded species by the following combination of characters: vertex with brown spot or band surrounding medial vertical seta; scutum with pair of submedial brown vittae, interrupted at transverse suture, and with brown band or triangular to trapezoidal mark on posterior margin; anepisternum without brown markings; abdominal tergites with pair of broad solid dark brown vittae without yellow spots and with even margins, not extending to lateral margins of tergites, which are yellow; cell c hyaline to diffuse pale brown except margins (without complete brown medial mark dividing distinct subbasal and subapical hyaline spots); distal hyaline mark in cell m ending at vein M or at most extending midway across cell r4+5. The aculeus of <i>B. brevivittata</i> resembles those of <i>B. bivittata</i> and <i>fernandezi</i> in having a very broad, deep medial concavity. It is intermediate between those two species in the width of the medial concavity, and the relative length of the tip is less than in both species. <b>Description.</b> Head: Dark brown area on ocellar tubercle almost always (17 of 18 specimens) extended beyond postocellar seta. Medial vertical seta in ovoid or triangular dark brown spot mostly posteromesal to seta or in narrow to broad band extended to opposite seta and usually connected to area on ocellar tubercle. Occipital suture narrowly dark orange to red brown. Sometimes with diffuse paler brown spot or small area including or ventral to lateral vertical seta. Thorax (Figs. 96–97): Scutum nonmicrotrichose except posterior to dorsocentral seta and laterally, with pair of broad dark brown submedial presutural vittae, usually broadest at level of posterior margin of postpronotal lobe, usually extended alm [...]
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