Chrysodema (Gelaeus) sara, Frank & Sekerka, 2016

Frank, David & Sekerka, Lukáš, 2016, Revision of the subgenusGelaeus of Chrysodema (Coleoptera: Buprestidae: Chrysochroinae), Acta Entomologica Musei Nationalis Pragae 56 (2), pp. 671-719 : 704-705

Chrysodema (Gelaeus) sara sp. nov.

( Figs 45–47 , 68 )

Gelaeus walkeri walkeri [misidentification]: AKIYAMA & OHMOMO (2000): Pl. 42, Figs 445-3.

Type locality. Indonesia, Maluku Province, Babar Island, Tepa.

Type material. HOLOTYPE: ♂, ‘ Indonesia, S. Moluccas / BABAR ISL., 0 – 250 m alt / Tepa env., 7.2010 / local collection lgt’ ( NMPC). PARATYPES (2 ♀♀): 1 ♀, same data as holotype ( SGCB) ; 1 ♀, ‘ Indonesia, S. Moluccas / WETANG ISL, 4.2009 / Rumalewan Besar vill env / Babar archipelago / local collectors lgt’ ( DFPC). All specimens provided with an additional red printed label: ‘ HOLOTYPE [or PARATYPE respectively] [sex] / Chrysodema (Gelaeus) / oborili sp. nov. / David Frank & / Lukáš Sekerka des. 2016 [year handwritten]’.

Description of holotype. Well preserved♂ specimen with all appendages, only left two distal antennomeres missing. Length 24.00 mm, width 8.00 mm, length/width ratio: 3.00.

Head purple-green. Pronotum and scutellum copper-green. Elytra bluish-black with apicolateral margins bright bluish-green and violet ( Figs 45, 47 ). Ventral side dark violet laterally and purple-red centrally ( Fig. 46 ). Legs copper-red with golden reflections on femora, violetgreen tibiae, tarsi brown with metallic claws.

Pronotum in general coarsely but sparsely punctate, laterally punctures moderately dense. Medial line well marked impunctate. Medial impressions shallow, more impressed along medial line, moderately densely punctate, punctures slightly smaller than remaining ones on disc. Principal impression, oval, moderately deep, not connected to basal impressions, variously punctate with several moderately large punctures and line of fine punctures. Lateral impressions shallow and rugose. Basal impressions oval, moderately deep.

Elytra without lateral impressions, finely punctate. Rows visible from base to apex, not impressed, basally regularly arranged, apically gradually irregular and irregularly double in apical half. Punctures in rows V–VIII in middle third of elytra more or less regular and sparse forming distinct rows, not isolated groups; spaces much broader than puncture diameter, flat not reticulate ( Fig. 47 ). Intervals flat, not elevated, broad, approximately 4–6× as wide as rows of punctures, basally impunctate, apically gradually narrowed and partly vanishing.

Mid femora in central part strongly shiny, very sparsely and finely punctate, on sides punctures slightly larger but still sparse.

Thoracic ventrites ( Fig. 46 ) centrally nearly impunctate, laterally moderately densely punctate, punctures large. Abdominal ventrites sparsely punctate, only ventrite I laterally moderately densely punctate.

Aedeagus ( Fig. 68 ) length 6.12 mm, width 1.53 mm, length/width ratio: 4.00. Apices of parameres obliquely truncate. Penis stout-oval and short in contrast to other taxa.

Variation. Body ♀♀ (n = 2): length: 26.75–34.00 mm, width: 9.50–12.75 mm, length/width ratio: 2.67–2.82.All three specimens quite similar, not showing much variation. Female from Babar Island appears more sparsely punctate due to larger size of its body.

Differential diagnosis. Readily recognizable species due to its smooth elytra with fine punctation. Chrysodema (G.) sara sp. nov. has the finest punctation of the elytra of all Gelaeus taxa. In generall it is most similar to C. (G.) walkeri walkeri , which has quite smooth elytra in comparison to remaining taxa but still has distinctly impressed rows of punctures and slightly elevated intervals posteriorly while C. (G.) sara does not have impressed rows or elevated intervals. Additionally, C. (G.) sara has the shortest and stoutest penis of all Gelaeus species and is practically the only with a distinctly broadly oval penis.

Etymology. This species is named after Sára Franková, daughter of the first author of this paper. The species epithet is a noun in apposition.

Distribution. Indonesia: Maluku Prov.: Babar Is. and Wetang Is.

Remarks. Figure 445-3 published by AKIYAMA & OHMOMO (2000) as C. (G.) walkeri walkeri is in fact C. (G.) sara sp. nov.

Figures

Figs 42–47. 42–44 – Chrysodema (Gelaeus) cyanicollis Kerremans, 1900 (holotype ♀, 27.00 mm). 45–47 – C. (G.) sara sp. nov. (holotype ♂, 24.00 mm). 42, 45 – dorsal view; 43, 46 – ventral view; 44, 47 – lateral view.

Figs 56–71. Parameres and penis. 56 – Chrysodema (Gelaeus) florensis Lansberge, 1880 (lectotype); 57 – C. (G.) foraminifera Lansberge, 1879 (Timor Is., RMNH); 58 – C. (G.) iris iris (Kerremans, 1898) (lectotype); 59 – C. (G.) iris moluensis Novak, 2010 (topotype); 60 – C. (G.) oborili oborili sp. nov.(holotype); 61 – C. (G.) oborili laratensis subsp. nov. (holotype); 62 – C. (G.) walkeri walkeri (Waterhouse, 1892) (Damar Is.); 63 – C. (G.) walkeri horaki subsp. nov. (holotype); 64 – C. (G.) walkeri rejzeki subsp. nov. (paratype); 65 – C. (G.) walkeri nigriventris subsp. nov.(holotype); 66 – C. (G.) walkeri bilyi subsp.nov.(holotype); 67 – C. (G.) walkeri kubani subsp. nov. (holotype); 68 – C. (G.) sara sp. nov. (holotype); 69 – C. (G.) cupriventris (Kerremans, 1898) (Wetar Is., DFPC); 70 – C. (G.) katka sp. nov. (holotype); 71 – C. (G.) wetteriana (Théry, 1935) (lectotype).