Megalota cacaulana Brown, 2009
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publication ID |
https://doi.org/ 10.11646/zootaxa.2279.1.1 |
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DOI |
https://doi.org/10.5281/zenodo.5315420 |
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persistent identifier |
https://treatment.plazi.org/id/038E7928-FFCD-FF92-FDAF-E5A5FB84FA4F |
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treatment provided by |
Felipe |
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scientific name |
Megalota cacaulana Brown |
| status |
sp. nov. |
6. Megalota cacaulana Brown , new species Figs. 6 View FIGURES 1–12 , 30 View FIGURES 28–30
Diagnosis. Superficially, M. cacaulana is indistinguishable from its Brazilian congener M. beckeri ( delphinosema group); however, the two are easily distinguished by features of the male genitalia. M. cacaulana has a pronounced, irregular, attenuate incurved projection from the valva about 0.75 the distance from the base, bearing a dense patch of long, slightly wavy setae, and the lobes of the uncus are more flattened dorsoventrally, vaguely crescent-shaped. The short, clublike basal process of the valva is extremely similar to that of M. beckeri , but the evenly concave lateral sides of the tegumen and the large projection from the distal part of the valva suggest that M. cacaulana is a member of the submicans group. The female is unknown.
Description. Head: Vertex dark brown and red-brown, frons slightly lighter brown; labial palpus brown. Thorax: Dorsum brown, with a faint darker lateral band on mesothorax. Hind tibia in male with pronounced sex scaling, white on inner surface, gray on outer surface, with hairpencil. Forewing length 7.5 mm (n = 1); basal 0.5 variegated brown and red-brown; an interrupted, oblique fascia from costa 0.5–0.7 distance from base, with a dark oblique dash at costa; an irregularly oblong-ovate patch in terminal region below apex, extending from near mid-termen to end of discal cell, and from there to dorsum as narrow dark brown line. Fringe brown. Hindwing dark brown, with margin nearly straight from CuA 2 to anal margin; anal margin in male with well-developed, elongate, white sex scales. Abdomen: Brown. Male genitalia ( Fig. 30 View FIGURES 28–30 ; 1 View FIGURES 1–12 preparation examined) with tegumen subrectangular, concave laterally, with deep rounded indentation at junction of uncus and tegumen; uncus comparatively stout, straight along basal edge, rounded along distal end, lateral lobes separated by a U-shaped gap; socius inconspicuous; valva narrower in middle 0.33; pronounced irregular, attenuate incurved projection from valva ca. 0.75 distance from the base, bearing a dense patch of long, slightly wavy setae; basal process of valva short, stout, twice as long as wide, broadened and somewhat truncate distally, with row of short spines in apico-mesal region and longer, hairlike setae in lateral region. Phallus simple, slightly curved, a trace of an external thorn subdistally on dorsum; vesica without cornutus. Female genitalia unknown.
Holotype. Male, Brazil, Rondônia, Cacaulandia , 140 m, 26–30 May 1998, V. O. Becker ( USNM), USNM slide 85,871.
Etymology. The specific epithet is derived from the type locality of Cacaulandia.
| USNM |
Smithsonian Institution, National Museum of Natural History |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.