Chrysodema (Chrysodema) vrabeci, Frank & Sekerka, 2020

Frank, David & Sekerka, Lukáš, 2020, Studies on the genus Chrysodema (Coleoptera: Buprestidae: Chrysochroinae) part I., Zootaxa 4720 (1), pp. 1-62 : 23-25

Chrysodema (Chrysodema) vrabeci sp. nov.

( Figs 16–18 , 77, 94–95 )

Chrysodema aurostriata [misidentifications]: Akiyama & Ohmomo (2000): Pl. 44, Fig. 465; Lander (2003): 83 (colour Figs 136–137).

Type locality. Thailand, Chiang Rai Province, Wiang Pa Pao .

Type material examined. HOLOTYPE: ♂, ‘N. THAILAND Chiang Rai / Wiang Pa Pao, iii 1991 / Native Col- lector. [w, p] // Chrysodema / aurostriata / Saund., 1866 / Dét. T. LANDER 19 2001 [w, h/p]’ ( MHNG). PARATYPES (1 ♂, 27 ♀♀): THAILAND: NAN PROV.: 11 ♀♀, ‘ THAILAND, Nan prov., / Ban Huai Kon env., / 19°35´34´´N; 101°05´06´´E / 27.v.-10.vi.2002 / M.Obořil lgt. [w, p]’ (4 ♀♀ DFPC, 2 ♀♀ EJBS, 9 ♀♀ MOOC, 1 ♀ VKSC, 1 ♀ SVVC). CHIANG MAI PROV.: 1 ♀ ‘ THAILAND / Chiang Mai / 5. 07. 1992 [w, p] // Chrysodema / aurostriata Saund. / det. S. Gottwald 2003 [w, p]’ ( SGBG); 1 ♀, ‘SAMOENG THAÏL. / CHIANG MAÏ / 26.V.88 / C. G. MINET [w, h/p] // Chrysodema ♀ / aurostriata / SAUNDERS, 1866 / Det. K. AKIYAMA 1989 [w, h/p]’ ( MHNG); 1 ♀, ‘THAI- LAND / Chiang Mai / Maetaeng / 20. V. 1988 / Chamong P. Leg. [w, p] // [dorsal side]: comparé / au Type [r, p]; [ventral side]: BMNH Londres [r, h] // [dorsal side]: Chrysodema / aurostriata / Saunders, 1866 / Dét. T. LANDER 1990 [w, h/p]; [ventral side]: comp / Type / B.M.N.H. / 7.1.99 [w, h]’ ( MHNG); 1 ♀, ‘T - Chiangmai / Mae Taeng / 23. Jun. 1990 [w, h] // Chrysodema (s. str.) / tonkinea KERR. / det. G. NOVAK 1990 [w, h/p] // Chrysodema 1866 / aurostriata Saund. , ♀ / det. G. Novak 2005 [w, p]’ ( ATMR, coll. R. Novak; 1 ♀, ‘T - Sansai / 16. Jun. 1990 / leg. Minetti/Ferrero [w, h] // Chrysodema (s. str.) / tonkinea KERR. / det. G. NOVAK 1990 [w, h/p] // Chrysodema 1866 / aurostriata Saund. , / det. G. Novak 2005 [w, p]’ ( ATMR, coll. R. Novak; 1 ♀, ‘ THAILAND / Chiang Mai / 12. 06. 1991 / coll. Steinke [w, p/h] // Chrysodema 1866 / aurostriata Saund. , / det. G. Novak 2005 [w, p]’ ( ATMR, coll. R. Novak. LAOS: 1 ♀, ‘ Laos / 1963 / A. Baudon [w, p] // ex coll. S. Bílý / National Museum / Prague, Czech

Republic [w, p] // Chrysodema / s. str. / aurostriata Saund. / A. Baudon det. [b, h/p]’ ( NMPC). 1 ♀, ‘ Laos / Nhat Oai / 15. VI. 17 [w, h; specimen collected by R. V. de Salvaza] // Chrysodema / aurostriata Saund. / Trans. Lond. (3) V. 1867 / p. 302, pl. 21. fig. 8 [w, h]’ ( MNHN). VIENTIANE PROV.: 1 ♀ (figured in LANDER (2003: Fig. 136) as C. aurostriata ), ‘Vientiane / LAOS / VIII.1982 / Coll. T. LANDER [w, h/p] // Chrysodema / aurostriata / Saund / Dét. T. LANDER 19 2000 [w, h/p]’ ( MHNG). BOK È O PROV.: 1 ♀, ‘ LAOS / Houei Sai [= Huay Xai] / Coll. T. LANDER [w, h/p] // Chrysodema / aurostriata / Saund / Dét. T. LANDER 19 2000 [w, h/p]’ ( MHNG). WITHOUT LOCALITY DATA: 1 ♂, ‘ 1.4.2001 (1) / C. aurostriata / 4h KOH 75°C / Dét. T. LANDER 19 [w, h/p] // Chrysodema / aurostriata / Saund., 1866 / Dét. T. LANDER 19 2001 [w, h/p]’ ( MHNG). All specimens were provided with an additional red printed label: ‘ HOLOTYPE [or PARATYPE respectively] [sex] / Chrysodema (Chrysodema) / vrabeci sp. nov. / David Frank & / Lukáš Sekerka det. I. 2019 [date handwritten]’.

Description of holotype. Well preserved ♂ specimen, only terminal tarsomeres on right mid and hind legs missing. Length 23.75 mm, width 7.75 mm, length/width ratio: 3.06. Body generally metallic green, shiny; convex parts on dorsum dark blue and impressed ones bright purple-golden. Ventral side green with strong copper tint. Legs including tarsi metallic green, ventral pads black with rust-coloured basal part. Labrum and maxillar palpi dark brown; maxillae and labium including palpi yellowish-brown. Scape and pedicel metallic, remaining antennomeres brownish-black.

Pronotum moderately densely macropunctate, in central part with broad and sparsely micropunctate interspaces. Macropunctation laterally gradually coarser, deeper and somewhat denser but macropunctures always isolated with shiny micropunctate areas among them. Medial line more or less visible, delimited as sparsely micropunctate, not elevated. Medial impressions absent, area usually occupied by impressions moderately densely punctate. Principal impressions moderately deep and not clearly delimited from disc. Lateral impressions absent, area coarsely punctate. Lateral margin rounded, carinate, distinct in basal 1/2.

Elytra regularly convex with intervals 2, 4, 6 and 8 flat in basal 2/3 and slightly convex (costate) in apical 1/3; intervals 4 and 6 not connected, widely separated by impressed and densely punctate area; interval 8 somewhat higher than others. Each elytron with two weak oval impressions: one, principal, interrupting interval 3 and covering area between 2 nd and 4 th interval in basal 1/4 length and the other in 2/3 length of elytron situated between 4 th and 8 th interval and interrupting interval 6; interval 6 continuing for a short distance as small isolated costa. Both impressions with slightly denser punctation than intervals. All intervals sparsely micropunctate (at magnification 50 ×) and with several macropunctures. Areas between each interval moderately impressed and densely macropunctate. Punctation completely irregular, not forming rows or distinct groups. Interspaces 1–5 × as wide as puncture diameter, very sparsely micropunctate, micropunctures hardly visible at magnification 50 ×. Each macropuncture bearing short adherent white seta, but impressions do not appear pilose. Epipleura in basal 1/4 broad, strongly shiny and sparsely punctate but rugose, then abruptly constricted with acutely angled inward tooth in constriction and then gradually narrowing apically; entire narrow part sparsely punctate, each puncture bearing long erect white seta.

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

Ventral side of body ( Fig. 17 ) overall densely and coarsely punctate, only central part with large shiny impunctate areas. Entire lateral sides of abdominal ventrites I–V densely and almost uniformly punctate but with distinct shiny impunctate areas, particularly in posterior half ( Fig. 18 ).

Aedeagus length: 6.00 mm, width: 1.00 mm, length/width ratio: 6.00. Parameres cymbiform, apices narrow and rounded. Penis moderately broad, elongate, gradually narrowing from base to nearly apex, only apical 1/20 strongly narrowing and rounded, ventral side deeply impressed with strong striae, lateral sides with deep canaliculus, dorsal margin distinctly broader than ventral one ( Fig. 77 ).

Variation. Body ♂♂ (n=2) length: 23.75–24.75 mm, width: 7.75–8.50 mm, length/width ratio: 2.90–3.06; ♀♀ (n=24): length: 20.50–30.00 mm, width: 7.00– 10.50 mm, length/width ratio: 2.85–3.14. Six specimens with very similar colouration as in holotype. Remaining specimens green with strong copper tint, a few specimens mostly copper. Structure of pronotum constant, only a few specimens with slightly denser and coarser punctation. Structure of elytra constant, impressions slightly vary in size but always present, though hardly visible in predominantly copper-coloured specimens. Punctation of elytra in larger specimens distinctly denser. Intervals from almost completely flat to more or less convex in apical 1/2. Aedeagus (n=2) length: 5.78–5.83 mm, width 0.89–0.94 mm, length/width ratio: 6.20–6.49.

Female genitalia. Ventrite VII coarsely punctate, apex narrow but subrounded. Tergite VIII coarsely punctate with moderately sized punctures and moderately narrowing apically; apex 0.6 × as wide as base and distinctly bilobed with deep emargination ( Fig. 95 ). Ventrite VIII subtriangular due to gradually narrowing sides, apex broad and rounded but not markedly narrowing ( Fig. 94 ).

Differential diagnosis. For comparative characters see Table 2 .

Etymology. This species is named after our friend Svatoslav Vrabec (Vrchlabí, Czech Republic), entomologist and photographer, who provided most of the photographs in this revision.

Distribution. Laos (Bokèo, Vientianne) and Thailand (Chiang Mai, Chiang Rai, Nan).

Remarks. Records of C. (C.) aurostriata from Thailand and at least part of those from Laos published by Lander (2003) belong to this species. Lander (2003: 83, Figs 136–137) figured two specimens. We located only the one on Fig. 136, which is designated as paratype. Depository of the other one (Fig. 137) is unknown to us nevertheless, we are convinced that it also belongs to C. (C.) vrabeci sp. nov. We have examined only two male specimens of C. (C.) vrabeci sp. nov., one is designated as holotype and the other has no locality data and was dissected by Lander but the aedeagus is not with the specimen. However, it perfectly agrees with the holotype therefore we included it among paratypes.

Figures

FIGURES 13–18. Chrysodema, general aspect: 13–15—C. (C.) aurostriata Saunders, 1866 (lectotype, ♀ 29.25 mm). 16–18— C. (C.) vrabeci sp. nov. (holotype, ♂ 23.75 mm). 13, 16—dorsal view; 14, 17—ventral view; 15, 18—lateral view.

FIGURES 73–95. Chrysodema, genitalia and terminal abdominal segments. 73—Chrysodema (Chrysodema) sonnerati Laporte de Castelnau & Gory, 1835 (Sri Lanka, MHNG); 74—C. (C.) lewisii lewisii Saunders, 1873 (holotype); 75—C. (C.) lewisii nakatai subsp. nov. (holotype); 76—C. (C.) tonkinea Kerremans, 1909 (lectotype); 77—C. (C.) vrabeci sp. nov. (holotype); 78—C. (C.) aeneoviolacea Deyrolle, 1864 (Kai Is., MHNG); 79—C. (C.) dany sp. nov. (holotype); 80—C. (C.) sibuyanica Fisher, 1924 (Sibuyan Is., NMPC); 81—C. (C.) wallacei Deyrolle, 1864 (Ambon Is, MNHN); 82—C. (C.) dohrnii Saunders, 1874 (Mindanao Is., DFPC); 83—C. (C.) fuscitarsis Kerremans, 1895 (Palawan Is., MNHN); 84—C. (C.) gottwaldi sp. nov. (holotype); 85—C. (Pseudochrysodema) coelestina Obenberger, 1922 (lectotype); 86—C. (P.) instabilis Deyrolle, 1864 (Halmahera Is., DFPC); 87—C. (C.) dohrnii (ibid., DFPC); 88—C. (C.) fuscitarsis (ibid., MNHN); 89—C. (C.) gottwaldi sp. nov. (holotype); 90, 91—C. (C.) aurostriata (lectotype); 92, 93—C. (C.) tonkinea (Hoa Binh, DFPC); 94, 95—C. (C.) vrabeci sp. nov. (Ban Huay Kon, MOOC). 73–79, 85–86—tegmen, parameres and penis; 80–84—aedeagus; 87–89—male ventrite VIII; 90, 92, 94—female ventrite VIII; 91, 93, 95—female tergite VIII. The scale bar does not apply to Figs 87–95.