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- W86526396 abstract "The new genus described herein falls in the Sticholotinae as defined by Sasaji (1968). The narrow terminal segment of the maxillary palpus, widely spaced mesocoxae, crypto te tramerous tarsi, and elongate triangular female genital plates place it in this subfamily. Nexophallus, new genus, belongs in the tribe Sticho lotini and is most nearly related to the Old World genus Sticholotis Crotch. Sticholotis has 11-segmented antennae, incomplete postcoxal lines, and always symmetrical male genitalia. Nexophallus has 10-segmented antennae, complete postcoxal lines, and symmetrical or asymmetrical male genitalia. In Pope's (1962) key to the genera of the Pharini (Sticholotini), Nexophallus goes to couplet 2, Plotina Lewis, from Japan, which has 11-segmented antennae. Other Western Hemisphere genera thus far recognized as belonging to the Sticholotinae have a different habitus and perhaps should be placed in a tribe other than the Sticholotini. These genera, such as Microweisea Cockerell and Coccidophilus Br?thes, are characterized by their minute size, elongate-oval form, clypeus elongate in front of eyes and emarginate laterally for antennal insertion, and postcoxal line in two parts, one extending nearly to lateral margin of first abdominal sternum along anterior margin, the other extending downward nearly to hind margin of first abdominal sternum, then outward toward lateral margin. Sticholotis, Nexophallus and related genera are usually larger, very round and convex, clypeus not or very slightly elongate in front of eyes and not always emarginate laterally for antennal insertion, and postcoxal line single, complete or incomplete,. Thanks must go to Hugh Leech, California Academy of Sciences for the loan of the type series of Nexophallus semiglobus, n. sp. Nexophallus, new genus Body round, extremely convex; dorsum faintly pubescent. Head broad, clypeus short, anterior margin trunate; eye small, situated on lateral margin of head; antenna inserted under anterior angle of clypeus immediately anterior to eye, 10-segmented, club 3-segmented, apical segment largest (fig. 4); labrum short, narrower than clypeus; maxillary palpus nearly as long as antenna, terminal segment strongly narrowing apically; mandible bidentate at apex, a small tooth at basal angle (fig. 7); Labial palpus ventrally articulated, terminal segment narrowing apically, basal segment very small (fig. 5). Pronotum deeply emarginate anteriorly, anterior angles produced, rounded. Scutellum small, triangular. Elytron with lateral margin sinuate, distinctly margined; elytral epipleura slightly descending externally, broad basally, narrowing toward apex, not reaching apex of elytron, not foveate for reception of femora. Underside of body nearly flat, not foveate for reception of any femora. Prosternum with xMail address: c/o U. S. National Museum, Washington, D. C. 20560" @default.
- W86526396 created "2016-06-24" @default.
- W86526396 creator A5062098317 @default.
- W86526396 date "2016-01-01" @default.
- W86526396 modified "2023-09-27" @default.
- W86526396 title "A New Genus and Two New Species of Sticholotini ( Cole?ptera :Coccinellidae) from South America" @default.
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