Protaetia (Pachyprotaetia) engganica, Jákl, 2011

Jákl, Stanislav, 2011, Description of seven new taxa of Cetoniinae from Indonesia (Coleoptera: Scarabaeidae), Acta Entomologica Musei Nationalis Pragae 51 (2), pp. 535-550 : 540-541

Protaetia (Pachyprotaetia) engganica sp. nov.

( Figs. 3a–e )

Type locality. Indonesia, Bengkulu province, Enggano Island.

Type material. HOLOTYPE: J ( NMPC): ‘ Indonesia, Bengkulu prov., ENGGANO ISL., 0 – 100 m, cca 120 km of Sumatra, 4. 2005, local collectors lgt.’

Description. Holotype length 16.2 mm, maximum humeral width 9.2 mm. Uniformly reddish brown with abundant yellowish tomentum.

Head. Dark brown. Punctation very dense, diameters of punctures circular, each puncture bears yellowish tomentum and setae. Interspaces between punctures very small. Antennae reddish. Whole surface and antennae with yellowish setosity.

Pronotum. Uniformly reddish brown, dull. Whole surface covered with abundant short, yellow setation and hundreds of small, equally sized circular patches; concentration of patches slightly lower on disc. Lateral margins of pronotum obtusely bordered. Posterolateral margins very broad, entirely bordered.

Scutellum. Reddish brown, apex dark olive. Elongated, apex obtusely rounded. Lateral and anterior margins decorated with tiny patches of tomentum.

Elytra. Reddish brown, decorated with hundreds of very small tomentum patches throughout length. Humeral and apical calli flat, indistinct, also covered with small tomentum patches. Sutural ridge with metallic reflection, slightly elevated in posterior half, not protruding over rounded elytral apex. Net-like striolation in posterior half, between sutural and elytral ridges; striolation simple and less abundant laterally. Setosity present throughout length, near apex and lateral margins very dense.

Pygidium. Reddish, entirely wrinkled, covered with numerous tiny tomentum spots and abundant yellowish setae.

Venter. Light brown with strong metallic-green reflection. All abdominal ventrites deeply punctured, diameters of punctures large, circular or semicircular. Punctures covered with yellow tomentum. Interspaces between punctures very narrow. Metasternum reddish, discal part with strong green lustre. Punctures large and dense, especially laterally. Each puncture covered with tomentum and long yellow setae. Mesometasternal process chestnut brown, wider than long, glabrous, not protruding. Prosternum and mentum reddish, with abundant tomentation and covered with long, yellow setae.

Legs. Violet-coloured, shining. Femora and tibiae covered with abundant patches of yellow tomentum. Setation yellow and abundant, inner part of metatibiae with brushes of gingercoloured setae. Protibiae tridentate, meso- and metatibiae with carina in posterior third.

Male genitalia. Similar to Protaetia (Pachyprotaetia) mixta , paramere apex elongated ( Figs. 3d–e ).

Differential diagnosis. The new species is most similar to Protaetia (Pachyprotaetia) mixta . It differs from that species in the following respects: 1) dorsum completely reddish brown; 2) pronotal patches very small, covering densely and regularly whole surface of the pronotum; 3) tomentation of elytra abundant, also composed of hundreds of small yellow tomentum patches; 4) Striolation of the posterior half of elytra between the sutural and lateral ridges very dense, bi-directional, forming reticulation (in P. (P.) mixta the striolation is only longitudinal and much less dense); 5) shape of lateral margins of the pronotum, which is broadly rounded in front of the posterolateral margins (shallowly emarginate in P. (P.) mixta ); 6) parame apex slightly more elongated, with the ventral protuberance farther away from the apex.

Etymology. Named after the type locality.

Distribution. So far known only from the type locality in Enggano Island, Indonesia.

Figures

Figs. 3–4. 3 – Protaetia (Pachyprotaetia) engganica sp. nov.; 4 – Taeniodera monacha nigra subsp. nov. a – habitus dorsally; b – habitus laterally; c – habitus ventrally; d – aedeagus apically; e – aedeagus laterally. Not in scale.