Gynaecoserica barclayi, 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-DB3D-6F4F-FE68-FDBF5A3E089E |
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treatment provided by |
Felipe |
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scientific name |
Gynaecoserica barclayi |
| status |
sp. nov. |
Gynaecoserica barclayi sp. nov.
( Figures 1J, K View Figure 1 , 9A View Figure 9 )
Type material examined
Holotype. Ƌ “Birmah Ruby M[in]es/ Doherty/ Fry Coll. 1905.100/ 62 Sericini Asia spec.” ( BMNH).
Description
Length 4.8 mm, length of elytra 3.5 mm, width 2.9 mm. Body oblong oval, surface yellowish brown, elytra with small irregular brown spots, dorsal surface shiny and sparsely setose.
Labroclypeus subtrapezoidal, widest at base, lateral margins moderately curved and convergent to moderately rounded anterior angles, lateral border and ocular canthus producing a distinct blunt angle, margins weakly reflexed, anterior margin medially distinctly sinuate; surface medially weakly convex, finely and densely punctate, distance between punctures partly less than their diameter, immediately behind anterior margin with a few short fine 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, sparsely punctate, with a fine terminal seta. Frons shiny, with fine, moderately dense punctures and two single setae near the interior edge of the eyes. Eyes moderately large, ratio of diameter: interocular width 0.55. Antenna yellow, with 10 antennomeres; club with four antennomeres, club as long as the remaining antennomeres combined, fifth antennomere not transversely produced. Mentum weakly elevated and flattened anteriorly.
Pronotum moderately wide, widest at base, lateral margins in basal half straight and subparallel, in anterior half moderately curved and convergent towards the strongly produced and sharp anterior angles, posterior angles blunt, anterior margin straight, with a distinct marginal line, basal margin without marginal line; surface with very dense and coarse punctures, with microscopic setae in the punctures; anterior and lateral borders sparsely setaceous; hypomeron distinctly margined at base but not ventrally produced. Scutellum narrowly triangular, with fine, dense punctures, at base medially smooth, fine microscopic setae present in the punctures.
Elytra moderately long and oval, widest at middle, striae feebly impressed, coarsely and densely punctate, intervals weakly convex, with coarse and moderately dense punctures concentrated along the striae, each puncture bears a minute seta, odd intervals with a few single coarse punctures bearing a robust white erect seta, interior apical angle of elytra with a strong seta, intervals with numerous small irregular and dark spots; epipleural edge strong and keel-like elevated, ending at the moderately curved external apical angle of elytra, epipleura sparsely 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 border, which is one fourth 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: 1.4. Pygidium strongly convex, coarsely and densely punctate, without smooth midline, surface shiny and moderately densely setose, beside apical and lateral border dull.
Legs moderately long; 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 slender and moderately long, widest at apex, ratio width: length: 1: 3.2, dorsally sharply edged, 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, with moderately dense and fine punctures, almost glabrous, with a few fine setae only; ventrally edged and serrate, medially feebly convexly widened, with three strong equally spaced spines, internal face 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 distinctly shorter than the following two tarsomeres combined and slightly less than twice as long as the upper tibial spur. Protibia short, bidentate, protarsal claws symmetrical.
Aedeagus is shown in Figure 1 View Figure 1 (J, K).
Diagnosis
Gynaecoserica barclayi sp. nov. may be differentiated from the rather similar G. pellecta Brenske by the more robust body shape, the distinctly shorter antennal club in the male, the very shiny dorsal surface, and the morphology of the aedeagus.
Etymology
Named in honour of Max Barclay (BNMH) who renders an outstanding service to the beetle collection of the Natural History Museum and who greatly supported this work.
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.