Chrysodema (Gelaeus) katka Frank & Sekerka 2016, sp. nov.
Creators: name: Frank, David
name: Sekerka, Lukáš
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Buprestidae
Chrysodema
Chrysodema katka

description: Chrysodema (Gelaeus) katka sp. nov.
(Figs 51–53, 70)
Type locality. Indonesia, East Nusa Tenggara Province, Timor Island, Soe.
Type material. HOLOTYPE: ♂, ‘ Soë (alt. 880m) / Timor central [w, p] // COLL ON LE MOULT / Naturaliste, Paris [w, p]’ (IRSN). PARATYPES (72 ♂♂ 47♀♀): 1♂ 6♀♀, same data as holotype (1♂ 3♀♀ IRSN, 2♀♀ DFPC, 1♀ NMPC); 1 ♂ 1 ♀, same data as holotype plus additional labels ‘R. Mus. Hist. Nat. / Belg. I. G. 12.595 [w, p] // J. De Walsche det.,1943: / Gelaeus / Walkeri Wat. [w, p/h]’ (IRSN); 18 ♂♂ 2 ♀♀, same data as holotype plus additional labels ‘R. Mus. Hist. Nat. / Belg. I. G. 12.595 [w, p] // J. De Walsche det.,1943: / GELAEUS / Walkeri(Wath.) [w, p]’ (16 ♂♂ 2 ♀♀ IRSN, 2 ♂♂ DFPC); 9 ♂♂ 6 ♀♀, ‘Soë-(880m.) / Timor central [w, p] // COLL ON LE MOULT / Naturaliste, Paris [w, p]’ (7 ♂♂ 2 ♀♀ IRSN, 1 ♀ MHNG, 1 ♀ LSPC, 1 ♂ NMPC, 1 ♂ 2 ♀♀ DFPC); 2 ♂♂ 1 ♀, ‘Soë-(880m.) / Timor central [w, p] // COLL ON LE MOULT / Naturaliste, Paris [w, p] // R. Mus. Hist. Nat. / Belg. I. G. 12.595 [w, p] // J. De Walsche det.,1943: / Gelaeus / Walkeri Wat. [w, p/h]’ (IRSN); 38 ♂♂ 14 ♀♀, ‘Soë-(880m.) / Timor central [w, p] // COLL ON LE MOULT / Naturaliste, Paris [w, p] // R. Mus. Hist. Nat. / Belg. I. G. 12.595 [w, p] // J. De Walsche det.,1943: / GELAEUS / Walkeri(Wath.) [w, p]’ (32 ♂♂ 11 ♀♀ IRSN, 1 ♂ MFNB, 1 ♂ LSPC, 4 ♂♂ 3 ♀♀ DFPC); 1 ♂ 1 ♀, ‘Soë (alt. 880m) / Timor central [w, p] // COLL ON LE MOULT / Naturaliste, Paris [w, p] // MUSÉUM PARIS / 1935 / Coll.A. THÉRY’ (MNHN); 2 ♂♂ 10 ♀♀, ‘ INDONESIEN / Timor / Camplong NTT / XII. 1996 [w, h]’ (1 ♂ 7 ♀♀ HMCM, 1 ♂ 1 ♀ MHNG, 2 ♀♀ DFPC); 1 ♀, ‘ INDONESIA, / TIMOR Isl., / Feb. 2005 [w, h]’ (VKSC); 1 ♀, ‘ Indonesia, Lesser Sundas / TIMOR isl. 5.2005 / local collectors lgt [w, p] // CHRYSODEMA (Gelaeus) / walkeri Waterhouse 1892 / det Barries 2008 [w, p]’ (WBWA); 1 ♀, ‘ INDONESIEN / WESTTIMOR / Mt. Mutis / 5/2005 [w, p/h] // Chrysodema / (Gelaeus) / walkeri (Waterh.) / det. S. Gottwald 2007 [w, p]’ (SGBG); 3 ♀♀, ‘Timor / Feb. 05 [w, p]’ (2 ♀♀ DFPC, 1 ♀ MFNB). All specimens provided with an additional red printed label: ‘ HOLOTYPE [or PARATYPE respectively] [sex] / Chrysodema (Gelaeus) / katka sp. nov. / David Frank & / Lukáš Sekerka des. 2016 [year handwritten]’.
Description of holotype. Quite well preserved ♂ specimen missing mouthparts and left antenna from antennomere V on. Length 23.00 mm, width 8.50 mm, length/width ratio: 2.71.
Head, pronotum and scutellum bright green with strong golden and copper reflections, impunctate areas of pronotum with violet reflections. Elytra pine green with slight purple reflection (Fig. 51), blue lateroapical margins and suture, and somewhat paler green lateral punctation with golden reflections (Fig. 53). Ventral side bright green with strong copper and golden reflections (Fig. 52). Legs bright green partly with golden and bluish reflections, tarsi yellow, only apical half of last tarsomere and claws metallic green.
Pronotum in general coarsely and moderately densely punctate. Medial line well marked, with a few moderately large punctures. Medial impressions very weak, more or less impressed only along medial line, densely punctate, punctures smaller than those lateral to them. Principal impressions deep, round, not connected to basal impressions, and with small dense punctures. Lateral impressions shallow and punctate. Basal impressions moderately deep, subtriangular.
Elytra moderately strongly and quite densely punctate, with slightly marked lateral impressions as round groups of coarser and paler coloured punctures (Fig. 53). Rows visible from base to apex, distinctly impressed on apical 2/3, more or less regularly arranged, but irregularly double or triple in apical 2/3 length. Punctures in rows V–VIII in middle third of elytra quite irregular and dense, and partly grouped, only internally forming more or less distinct rows; spaces 1–2× as broad as diameter of puncture, flat, not reticulate (Fig. 53). Intervals basally flat, not elevated, broad, approximately 3–4× as wide as rows of punctures, impunctate; apically and laterally somewhat elevated and punctate, first interval somewhat vanishing apically.
Mid femora in central part strongly shiny, sparsely punctate, punctures large, on sides punctures smaller but coarser and dense.
Ventral side of body (Fig. 52) overall coarsely and quite densely punctate, only central parts of thoracic and abdominal ventrites sparsely punctate. Lateral sides of abdominal ventrites densely and coarsely punctate with small punctures, latter on ventrites II to V gradually sparser in apical half and replaced with sparse larger punctures. Lateral side of ventrite V densely punctate only in basal third.
Aedeagus (Fig. 70) length 5.95 mm, width 1.22 mm, length/width ratio: 4.88. Apices of parameres obliquely truncate. Penis elongate, subparallel-sided.
Variation. Body♂♂ (n = 49) length: 18.00–24.25(25.75) mm, width: 6.25–9.20 mm, length/ width ratio: 2.60–2.85(2.96); ♀♀ (n = 42) length: 19.25–28.50(30.75) mm, width: 7.25–11.50 mm, length/width ratio: 2.51–2.78. Very variable taxon. Impressions on pronotum shallow to moderately deep and of variable size; punctation of pronotum, particularly in smaller specimens, coarser, punctures with larger fovea. Principal impressions round to elongate oval. Colouration of pronotum from mostly vivid green with bluish tint to mostly copper or violet, however majority of specimens with green background colour and golden/copper impressions and foveae of punctures; largely copper to violet pronotum is present only in specimens from Camplong. Colouration of elytra in series from Soë quite uniform, varying only in intensity of purple tint; only six specimens with bluish tint to mostly blue elytra and two with nearly black (? artificially) elytra. In series from Camplong five specimens with blue elytra and green pronotum and seven with pine green elytra and purple pronotum. Lateral impressions on elytra absent to variously present, if present posterior impression deeper and better indicated than anterior, which is only exceptionally truly impressed. Ventral side in most specimens green with variable extent of golden and copper reflections, sometimes nearly whole underside copper; exceptionally dark violet (five specimens with purple pronotum from Camplong). Specimens from Soë were badly damaged and about one quarter of them have missing tarsi. Of the remaining specimens 49 have last tarsomere metallic and 40 uniformly brown. Aedeagus (n = 7) length: 5.36–6.83 mm, width 1.12–1.43 mm, length/width ratio: (4.29)4.78–4.94(5.31).
Differential diagnosis. Chrysodema (G.) katka sp. nov. is most similar to C. (G.) cupriventris as both have similarly green elytra and paler pronotum with golden and copper reflections. They can be easily separated by punctation of abdomen, which is moderately strong and very sparse in C. (G.) cupriventris while dense and coarse in C. (G.) katka. Additionally, C. (G.) cupriventris has lighter tone of elytra (i.e. fern green) and brightly copper-red ventral side. At first glance C. (G.) katka is also similar to C. (G.) foraminifera (also known from Timor) but the latter differ in brightly green ventral side of body and uniformly equally coloured pronotum and elytra while C. (G.) katka has dark ventral side and elytra distinctly darker coloured than pronotum. Chrysodema (G.) foraminifera also differs in narrower and more elongate penis than C. (G.) katka (Figs 56 vs 70).
Etymology. This species is dedicated to Katka Štajerová for her support and love to the second author of this paper. The epithet is noun in apposition.
Distribution. Indonesia / East Timor: Timor Is. We have examined several specimens labelled just Timor and therefore we cannot be sure whether they were collected in the Indonesian part of the island or in the East Timor.
description: Published as part of Frank, David & Sekerka, Lukáš, 2016, Revision of the subgenusGelaeus of Chrysodema (Coleoptera: Buprestidae: Chrysochroinae), pp. 671-719 in Acta Entomologica Musei Nationalis Pragae 56 (2) on pages 700-701, DOI: 10.5281/zenodo.5310800