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| Format: | Recurso digital |
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Zenodo
2002
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| Online adgang: | https://doi.org/10.5281/zenodo.15699558 |
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Indholdsfortegnelse:
- <p><b><i>Magdalinops knowltoni</i>, new species</b></p><p>Figs. 3, 4, 12, 20, 22</p><p><b>Type Series.</b> Holotype. United States. <b>Utah.</b> <i>Emery Co.</i>: [UTAH, Emery Co./ 4 mi. W. Orangeville / 25 June 1990 / S. M. Clark] (♂, HAHC). Paratype. United States. <b>Utah.</b> <i>Carbon Co.</i>: [Price, Ut./6­17­35] [Utah Exp. Sta./ G. F. Knowlton /Collector] (1 ♂, BYUC). United States.</p><p><b>Description.</b> Body (Figs. 3–4): elongate, cylindrical, parallel­sided in dorsal view; length 2.6–2.9 mm; width 1.0– 1.3 mm. Integument black, narrowly exposed on pronotum and on elytral striae, not more so on even­numbered ones beneath broad cinereous scales. <i>Head</i>: vertex, frons and venter with dense, imbricated scales; eyes round. <i>Rostrum</i> (Fig. 3): slender, slightly, evenly curved from base to apex in lateral view; proximal portion rugose­punctate, feebly carinate dorsomedially; lateral rostral groove punctulate; dorsal margin of lateral rostral groove subcarinate; distal portion rugulose­punctate, glabrous, shining, expanded at apex in dorsal view. <i>Antennae</i>: funicular segments with broad, cinereous scales; club with basal segment shining at base, <i>ca.</i> 1/3 length of club. <i>Prothorax</i>: pronotum densely, coarsely punctate, without middorsal carina; rounded, cinereous scales predominant laterally and in broad middorsal vitta; sparser, narrower, cinereous scales predominant dorsolaterally; mesocoxae separated by distance <i>ca.</i> 0.2 <b>X</b> width of one mexocoxa. <i>Elytra</i>: narrow, subparallel­sided in dorsal view, flattened on disc, broadly rounded posteriorly in lateral view; striae distinctly impressed, each puncture with one minute scale; interstriae flattened, with rounded, slightly imbricated, cinereous scales; scales on odd­numbered interstriae not significantly narrower or sparser; sutural interstriae not prominent. <i>Scutellum</i>: with dense cretaceous scales. <i>Abdomen</i>: sterna with dense, cinereous scales. <i>Legs</i>: profemur without ventral tooth; metafemur slightly narrower, unarmed; protibia with slight inner­marginal prominence in basal 2/3, inner margin concave in apical 1/3, with small, obtuse preapical prominence; protibial uncus slender, curved, acute (Fig. 12); metatibia with outer margin slightly curved, inner margin slightly prominent in basal 1/3, broadly concave in apical 2/3, with small preapical prominence; metatibial mucro curved, oblique, acute (Fig. 12); 5th tarsal segment long, slender, 2.8 <b>X</b> longer than 3rd segment (Figs. 12, 20); tarsal claw with long, slender, acute, basal tooth arising from inner margin, well distad of base (Fig. 20). <i>Male Genitalia</i> (Fig. 22): median lobe of aedeagus evenly, gradually narrowed to rounded apex in dorsal view; endophallus unarmed.</p><p><b>Specimens Examined.</b> <i>Magdalinops knowltoni</i> is known only from the holotype and one paratype, both from Utah.</p><p><b>Plant Associations.</b> Unknown.</p><p><b>Remarks.</b> The small size, slender form (Figs. 3–4) and the long, curved tooth on the tarsal claw, distinguish <i>M. knowltoni</i> from the other species of <i>Magdalinops.</i> The 5th tarsal segment is longer and more slender than in <i>M. vittipennis</i> (cf. Figs. 11, 12, 18, 20) and even longer than in <i>M. alutaceus</i> (Fig. 19) and <i>M. falli.</i> The elytra are not vittate, as in <i>M. vittipennis,</i> but the antennal funicular segments have similar broad cinereous scales, and the antennal club has the basal segment long, glabrous and shining, as in the latter species.</p><p>The species is named for George F. Knowlton in recognition of his many contributions to the study of insects of the western United States.</p>