Anthaxia (Haplanthaxia) nigroaenea, Bílý & Sakalian, 2014

Bílý, Svatopluk & Sakalian, Vladimir P., 2014, A revision of the Anthaxia (Haplanthaxia) mashuna species-group (Coleoptera: Buprestidae: Buprestinae), Acta Entomologica Musei Nationalis Pragae 54 (2), pp. 605-621 : 616-618

Anthaxia (Haplanthaxia) nigroaenea sp. nov.

( Figs 5 , 10 , 18, 21 )

Type locality. Kenya, Ngong Hills, 8 km S of Kiserian, 01°27ƍS – 36°38ƍE.

Type specimens studied. HOLOTYPE: J, ދ Kenya, Ngong Hills , 8 km S of Kiserian, 01°27ƍS – 36°38ƍE, 10.–17.iv.2006, E. Jendek leg.ތ ( NMPC) . ALLOTYPE: ♀, ދ Uganda occ., Kasese, 600 m, 18.–19.xi.1994, lgt. M. Snížek ތ ( NMPC) . PARATYPES: 3 JJ, same data as allotype ( NMPC) ; ދ Kenya, Loitokitok [Coast Province], 6.xii.2004, leg. Hovorka ތ (1 J, WBCW) ; 1 J, ދ Tanzania, Ujewa , x.[19]98, G. Curletti leg. // ex larva Acacia sp. , G. Curletti leg.ތ ( NMPC) ; 1 J, ދ Tanzania, Iringa, 27.x.2003 // ex larva Acacia sp. G . Curletti leg.ތ ( GCCI) ; 1 J, ދ Tansania, Morogoro, Nguru Mountains // Str. zw. Masimba u. Kibati , Umg. Pemba, 950 m, 4.xii.2009, leg. A.Puchner ތ ( APWC) ; 1J, ދ [ Tanzania] Ukerewe, P. A. Conrads ތ ( NMPC) .

Diagnosis. Large (8.0– 11.2 mm), convex, wedge-shaped, black with slight bronze lustre ( Fig. 5 ); lateral, longitudinal depressions in posterior half of elytra with golden-red lustre; antennae red-bronze, outer half of antennomeres 5–11 yellow in male; ventral surface black with red-bronze lustre; dorsal surface asetose, frons with short, white, rather dense, semi-erect pubescence; ventral surface lustrous, with very short, sparse, white pubescence, prosternal plate asetose.

Description. Male (holotype). Head large, as wide as anterior pronotal margin; anterior margin of frontoclypeus widely, shallowly emarginate; frons slightly, regularly convex, inner margins of eyes strongly S-shaped; vertex weakly convex, 0.5 times as wide as width of eye; eyes large, reniform, slightly projecting beyond outline of head; sculpture of frons consisting of small, dense, polygonal or rounded cells with tiny central grains; antennae rather short, robust ( Fig. 5 ), scarcely reaching midlength of lateral pronotal margins when laid alongside; scape claviform, slightly curved, 4 times as long as wide; pedicel subcylindrical, 1.5 times as long as wide; third antennomere slightly triangular, 1.8 times as long as wide, fourth antennomere obtusely triangular, slightly wider than long; antennomeres 5–10 widely trapezoidal to lobate, about 1.8 times wider than long, terminal antennomere pyriform, twice as wide as long.

Pronotum convex, 1.8 times as wide as long, slightly depressed in middle; anterior margin rather deeply, posterior margin very slightly biarcuate; lateral margins regularly rounded, maximum pronotal width in anterior third; lateroposterior depressions shallow, slightly longitudinal, posterior angles obtuse; sculpture consisting of ¿ne, transverse rugae which are slightly bent posteriorly in prescutellar part; lateral parts of pronotum with small, dense, polygonal cells with small central grains. Scutellum micro-sculptured, obtusely pentagonal, slightly concave, somewhat wider than long.

Elytra convex, widely wedge-shaped, uneven, twice as long as wide; each elytron with shallow, oblique, posthumeral depression and with longitudinal depression in posterior half near lateral margin; humeral swellings small but well-de¿ned; transverse, basal depression deep, not reaching scutellum, interrupted by small elevation near humeri; posterior third of elytral margins sharply serrate, each elytron rounded separately; elytral epipleura narrow, parallel-sided, not reaching elytral apex; sculpture consisting of small, irregular punctures fusing into short, transverse rugae in humeral part and along suture.

Ventral surface with small, dense, simple punctures; prosternal process flat, strongly enlarged posterior to procoxae, sharply pointed apically; anal ventrite widely truncate with sharp, dense, lateral serration. Legs rather robust, pro- and mesotibiae rather strongly curved; metatibiae ( Fig. 21 ) almost straight with large tooth in the posterior fourth of inner margin. Tarsal claws small, slender, hook-shaped, only weakly enlarged at base.

Aedeagus ( Fig. 10 ) long, tapering posteriorly, parameres with two weak, blister-like elevations on ventral surface; median lobe sharply pointed apically, without lateral serration.

Sexual dimorphism. The female differs from the male in the unicolorous, not enlarged antennae, straight mesotibiae, unmodi¿ed metatibiae and in the widely emarginate anal ventrite ( Fig. 18 ).

Measurements. Length: 8.0– 11.2 mm (holotype 11.2 mm); width: 2.8–4.0 mm (holotype 4.0 mm).

Variability. No variability was observed except for the size.

Differential diagnosis. Anthaxia (H.) nigroaenea sp. nov. is similar to A. (H.) jendeki sp. nov. from which it differs in larger size (the largest species of the group) and nearly black colouration, less acuminate body, wider pronotum (only 1.7 times as wide as long in A. (H.) jendeki sp. nov.), enlarged and bicolorous male antennae ( Fig. 5 ), slightly in the shape of male metatibiae ( Figs 20 vs. 21), and in the different male genitalia ( Figs 9 vs. 10)

Etymology. The speci¿c epithet is composed from the Latin nouns ދ niger ތ (black) and ދ aeneus ތ (coppery) because of the colouration of the new species.

Distribution. Kenya, Tanzania, Uganda.

Figures

Figs 1–6. Anthaxia (Haplanthaxia) mashuna Obenberger, 1931 species-group, dorsal aspects. 1 – A. (H.) convexiptera sp. nov., holotype, male, 7.8 mm; 2 – A. (H.) ennediana Descarpentries & Mateu, 1965, male (Kenya: Nguni), 8.2 mm; 3 – A. (H.) jendeki sp. nov., holotype, male, 9.2 mm; 4 – A. (H.) mashuna Obenberger, 1931, male (Zambia: Abercorn), 9.4 mm; 5 – A. (H.) nigroaenea sp. nov., holotype, male, 11.2 mm; 6 – A. (H.) puchneri sp. nov., holotype, male, 8.0 mm.

Figs 7–12. 7–8 – Anthaxia (Haplanthaxia) mashuna Obenberger, 1931 species-group, dorsal aspects. 7 – A. (H.) patrizii Théry, 1938, male (Egypt: Wadi Jimal), 9.1 mm; 8 – the same, pronotum. 9–12 – male genitalia (a – dorsal, b – lateral). 9 – A. (Haplanthaxia) jendeki sp. nov., holotype; 10 – A. (H.) nigroaenea sp. nov., holotype; 11 – A. (H.) convexiptera sp. nov., holotype; 12 – A. (H.) puchneri sp. nov., holotype. Figs 7–8 – photo by D. Baiocchi.

Figs 13– 26. 13–15 – male genitalia (a – dorsal, b – lateral, c – ventral). 13 – Anthaxia (Haplanthaxia) mashuna Obenberger, 1931, lectotype; 14 – A. (H.) ennediana Descarpentries & Mateu, 1965 (Kenya: Nguni); 15 – A. (H.) patrizii Théry, 1938 (Egypt:Wadi Jimal).16–19 – anal ventrites (not to scale). 16 – A. (H.) jendeki sp. nov., holotype, male; 17 – A. (H.) jendeki sp. nov., allotype, female; 18 – A. (H.) nigroaenea sp. nov., allotype, female; 19 – A. (H.) convexiptera sp. nov., allotype, female.20–26 – male metatibiae. 20 – A. (H.) jendeki sp. nov., holotype; 21 – A. (H.) nigroaenea sp. nov., holotype; 22 – A. (H.) convexiptera sp. nov., holotype; 23 – A. (H.) puchneri sp. nov., holotype; 24 – A. (H.) mashuna Obenberger, 1931, lectotype; 25 – A. (H.) ennediana Descarpentries & Mateu, 1965 (Kenya: Nguni); 26 – A. (H.) patrizii Théry, 1938 (Egypt: Wadi Jimal).