Chrysodema (Pseudochrysodema) jakli, Frank & Sekerka, 2020

Frank, David & Sekerka, Lukáš, 2020, Studies on the genus Chrysodema (Coleoptera: Buprestidae: Chrysochroinae) part I., Zootaxa 4720 (1), pp. 1-62 : 55-56

Chrysodema (Pseudochrysodema) jakli sp. nov.

urn:lsid:zoobank.org:act:7845C32C-20AC-40D2-A069-15DE60A5BED1

( Figs 70–72 )

Type locality. Indonesia, East Nusa Tenggara Province, Timor Island, Kolon env .

Type material examined. HOLOTYPE: ♀, ‘ INDONESIA, Lesser Sundas / WEST TIMOR I. / Kolon vill. env. / IV.2016 local collector leg. [w, p]’ ( MHNG). PARATYPES (17 ♀♀): 3 ♀♀, same data as holotype ( NMPC, DFPC, SJPC); 1 ♀, ‘ INDONESIA TIMOR isl. / Mutis, Gunuag / 9°34’00’’S, 124°14’00’’E / local collector 1998 [w, p] // Chrysodema / radians / (Guerin, 1831) / Dét. T. LANDER 19 2007 [w, h/p]’ ( EJBS); 2 ♀♀, ‘ INDONESIA, Lesser Sundas / WEST TIMOR, Mutis Mts. / MOLO MT., Soe region / 500 m alt., 10 - 20.I.2016 / local collector leg. [w, p]’ ( SJPC); 1 ♀, ‘ Indonesia, Lesser Sundas / TIMOR Isl., Oemelu vill env / 200 m alt S slopes of Mt. FATULEU / 1.2009, local collectors leg [w, p]’ ( DFPC); 1 ♀, ‘Timor / JAN.2017 [w, p]’ ( SJPC); 1 ♀, ‘Timor / APR.2017 [w, p]’ ( SJPC); 3 ♀♀, ‘TIMOR IS. [w, p]’ ( SJPC); 1 ♀, ‘RI-KI. Sundainseln / Timor Isl. Juli 2007 / coll. Jakl [w, p] // Timor / July 2007 [w, p] // Chrysodema 1831 / radians (Guerin) , / Timor Isl. / det. G. Novak 2010 [w, p]’ ( ATMR, coll. R. Novak; 2 ♀♀, ‘RI-KI. Sundainseln / Timor Isl. Mt. Mutis 1100m / coll. Jakl Mai 2008 [w, p] // Timor / May. 2008 [w, p] // Chrysodema 1831 / radians (Guerin) , / Timor Isl. / det. G. Novak 2010 [w, p]’ ( ATMR, coll. R. Novak; 1 ♀, ‘C. Rousse / Moluques [w, h]’ ( MHNG). WITHOUT LOCALITY DATA: 1 ♀ ( DFPC). All specimens were provided with an additional red printed label: ‘ HOLOTYPE [or PARATYPE respectively] [sex] / Chrysodema (Pseudochrysodema) / jakli sp. nov. / David Frank & / Lukáš Sekerka det. I. 2019 [date handwritten]’.

Redescription of holotype. Well preserved ♀ with all appendages. Length 32.00 mm, width 11.25 mm, length/ width ratio: 2.84.

Body generally obscure metallic bronze-brown, without additional reflections; pronotum distinctly darker coloured than elytra, principal impressions somewhat metallic iridescent. Apical half of abdominal ventrites strongly metallic bronze. Antennae dark brown, only base of antennomere I rust-coloured. Labrum, labium and maxillae pale brown. Ventral pads on all tarsomeres yellowish-brown.

Head coarsely but sparsely punctate, punctures foveolate, each bearing short seta, thus frons sparsely pubescent. Vertex sparsely and moderately punctate; punctures bearing adherent setae.

Pronotum moderately densely macropunctate; interspaces distinctly micro-reticulate and finely and sparsely micropunctate, not shiny. Macropunctation laterally gradually coarser and denser. Each macropuncture bearing moderately long white adherent seta. Medial line well visible, moderately elevated, anterior quarter very conspicuously micropunctate, then punctures gradually weaker, and apical 1/4 without micropunctures. Medial impressions distinct, moderately deep. Principal impressions large formed by one deep concavity; its punctation much finer and shallower, sparse centrally and gradually denser marginally. Lateral impressions moderately deep, with several macropunctures. Border between principal and lateral impression forming high and relatively sharp carina. Lateral margin reaching to approx. 5/6 length of pronotum, carinate in whole length. Base of pronotum with broad, impunctate and slightly elevated transverse ridge on each side.

Elytra regularly convex; basal 1/4 smooth without costae, apical 3/4 with more or less distinct costae along suture and on intervals 2, 4, 6 and 8. Interval 6 not shortened and connected to interval 4 on apical slope. Costae low and irregular, partly connected by low transverse rugosities. Elytra completely irregularly punctate including intervals; without distinct micropunctation (at magnification 50 ×). Punctures deeply impressed and foveolate, moderately densely arranged; interspaces 1–8 × as wide as puncture diameter. Punctures centrally (between sutural and interval 8) forming irregular groups of 2–4 punctures; each group more or less impressed. Each macropuncture bearing short adherent white seta, but impressions do not appear pilose. Epipleura in basal 1/4 broad, densely punctate, then continuously constricted and gradually narrowing apically; punctures becoming finer and vanishing towards apex. Each puncture bearing long erect white seta.

Fore and mid femora in central part strongly shiny, sparsely punctate; hind femora somewhat more densely punctate. Each puncture bearing seta, setation particularly conspicuous on lower side of hind femora.

Ventral side of body ( Fig. 71 ) overall densely and moderately coarsely punctate, only central part sparsely punctate with large shiny impunctate areas. Lateral sides of abdominal ventrite I very densely punctate with small punctures, only narrow area along apical margin shiny with several larger and sparsely arranged punctures. In remaining abdominal ventrites basal half of lateral sides densely punctate, and apical ones sparsely punctate ( Fig. 72 ).

Variation. Body ♀♀ (n=17): length: (29.50)31.00–36.00(38.00) mm, width: 10.25–13.50 mm, length/width ratio: (2.60)2.66–2.88. Quite constant species showing little variability in punctation, which can be weaker and thus appear slightly sparser. In some specimens micropunctation on pronotum very fine and practically invisible including medial line. Basal ridge of pronotum variable, in most specimens missing or more or less defined as impunctate area. Central part of each elytron at least between intervals 2 and 6 with impressed groups of punctures but in some specimens these groups small and thus not as obvious. Aedeagus unknown, all studied specimens are females.

Differential diagnosis. For differential diagnosis see Table 4 .

Etymology. This species is named after our friend Stanislav Jákl (Prague, Czech Republic), specialist in the Cetoniinae and donor of the holotype.

Distribution. Indonesia, East Nusa Tenggara Province, Timor Island. The species possibly also occurs in East Timor.

Remarks. The old specimen from ‘Moluques’ is morphologically absolutely identical to recent material from Timor, therefore we designate it as paratype and assume it was perhaps mislabelled.

Figures

FIGURES 67–72. Chrysodema, general aspect: 67–69—C. (Pseudochrysodema) instabilis Deyrolle, 1864 (lectotype, ♀ 30.50 mm). 70–72—C. (P.) jakli sp. nov. (holotype, ♀ 32.00 mm). 67, 70—dorsal view; 68, 71—ventral view; 69, 72—lateral view.