Gynaecoserica hirsuta, Ahrens & Fabrizi, 2009
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publication ID |
https://doi.org/ 10.1080/00222930902968809 |
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persistent identifier |
https://treatment.plazi.org/id/0399C459-DB01-6F74-FE6E-FC885A000F16 |
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treatment provided by |
Felipe |
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scientific name |
Gynaecoserica hirsuta |
| status |
sp. nov. |
Gynaecoserica hirsuta sp. nov.
( Figures 2V–X View Figure 2 , 7D View Figure 7 , 9A View Figure 9 )
Type material examined
Holotype. Ƌ “ Laos, 21°09¢ N 101°19 ¢E, Louangnamtha pr., Namtha-Muang Sing , 5–31.v.1997, 900– 1200 m, Vit Kubán leg./ LS 39 / 55 Sericini Asia spec.” ( TICB).
Description
Length 3.9 mm, length of elytra 2.5 mm, width 2.3 mm. Body oblong–oval, surface yellowish brown, dorsal surface except head dull and densely erectly setose.
Labroclypeus subtrapezoidal, distinctly wider than long, widest at base, lateral margins curved and strongly convergent to strongly rounded anterior angles, lateral border and ocular canthus producing a distinct blunt angle, margins weakly reflexed, anterior margin straight; surface medially convex, finely and not densely punctate, distance between punctures a little wider than their diameter, with a few coarse punctures behind anterior margin bearing short setae; frontoclypeal suture indistinctly incised and medially weakly curved; smooth area in front of eye approximately 1.5 times as wide as long; ocular canthus short and triangular, smooth, with a fine terminal seta. Frons shiny, posteriorly too, with fine, moderately dense punctures, sparsely erectly setose. Eyes small, ratio of diameter: interocular width 0.54. Antenna yellow, with 10 antennomeres; club with four antennomeres, club a little shorter than the remaining antennomeres combined, first antennomere of club half as long as the others. Mentum weakly elevated and flattened anteriorly.
Pronotum narrow, widest at base, lateral margins weakly curved and weakly convergent anteriorly, in anterior half more strongly convergent towards the strongly produced and sharp anterior angles, posterior angles right angled but moderately rounded at the tip, anterior margin strongly convexly produced medially, with a broad smooth marginal line, basal margin without marginal line; surface with dense and coarse punctures, with microscopic setae in punctures and numerous erect robust setae; anterior and lateral borders setaceous; hypomeron distinctly margined at base but not ventrally produced. Scutellum short-triangular, with very fine, dense punctures, medially smooth, microscopic setae present in the punctures.
Elytra moderately long and oval, widest at middle, striae feebly impressed, finely and densely punctate, intervals flat, with very sparse, fine punctures concentrated along the striae, punctures with fine microscopic setae, additionally odd intervals with single coarse punctures mostly concentrated along the striae bearing a robust yellowish erect seta, interior apical angle of elytra with a strong seta; epipleural edge fine ending at the strongly curved external apical angle of elytra, epipleura densely setaceous, apical border without short microtrichomes.
Ventral surface dull, with fine and moderately dense punctures, sparsely setose, metacoxa only laterally with a few strong adjacent setae; each abdominal sternite with indistinct transverse row of coarse punctures bearing short setae between fine, dense punctation, penultimate sternite apically with a shiny smooth sclerotized bor- der, which is one-sixth as long as sternite, last sternite medially a little shorter than the penultimate one. Mesosternum between mesocoxae as wide as mesofemur, with irregularly scattered very strong setae. Ratio of length of metepisternum: metacoxa 1: 1.71. Pygidium moderately convex, finely and densely punctate, without smooth midline, with dense robust light setae.
Legs robust and short; femora dull, with two longitudinal rows of setae, finely and sparsely punctate; metafemur shiny, sharply margined anteriorly and without a submarginal serrate line, posterior margin weakly convex and glabrous, ventrally only weakly widened in apical half and not serrate, dorsally finely serrate, with short setae. Metatibia moderately slender and moderately long, medially convexly widened, widest at middle, ratio width: length: 1: 2.9, dorsally weakly carinate, with two groups of spines, basal one at one-third, apical one at two-thirds of metatibial length, basally with a few single, fine spines in the punctures; external face longitudinally convex, almost smooth, with sparse, fine punctures, glabrous; ventrally edged and serrate, with three strong, equally distant spines, internal face not punctate and smooth, apex interiorly near tarsal articulation sharply and deeply truncate. Tarsomeres dorsally glabrous and impunctate, ventrally with sparse, short setae; metatarsomeres ventrally with a strongly serrate ridge, beside which is a fine longitudinal carina, first metatarsomere as long as the following two tarsomeres combined and twice as long as the upper tibial spur. Protibia very short, bidentate, protarsal claws symmetrical.
Aedeagus shown in Figure 2 View Figure 2 (V–X).
Female unknown.
Diagnosis
Gynaecoserica hirsuta sp. nov. is externally and in its genital characteristics similar to G. rostrata sp. nov. It may be differentiated from G. rostrata by the antennal club in the male, of which the first antennomere is only half as long as the club, and by robust pilosity of the elytra, which is present only on odd intervals, as well as by shape of parameres and lateral apophysis of the phallobase (lateral view), the latter is apically hooked in G. rostrata .
Etymology
Name derived from the Latin word, hirsutus, with reference to the densely setose dorsal body surface.
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