Protaetia (Macroprotaetia) maxwelli, 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 : 537-538

Protaetia (Macroprotaetia) maxwelli sp. nov.

( Figs. 1a–e )

Type locality. Indonesia, North Sumatra province, Nias Island.

Type material. HOLOTYPE: J ( NMPC): ‘ Indonesia , Nias island, 12. 1995, native collectors’ . PARATYPES: J (no. 1), J (no. 2): ‘ INDONESIA, NIAS ISLAND, 8. – 9. 1995, native collectors lgt.’ ( SJPC) ; J (no. 3): ‘ Sumatra, Nias, German Mission [handwritten], Fry Coll. 1905-100’ ( BMNH) ; J (no. 4), ♀ (no. 5): ‘ Nias , 84. 2 [handwritten]’ ( BMNH) .

Description. Holotype length 27.1 mm, maximum humeral width 14.0 mm. Dark grassy green, oval shaped, completely covered with dark green tomentum.

Head. Parallel-sided, completely covered with dark green tomentum. Frons simply punctured. Clypeus laterally wrinkled, middle part simply punctured. Anterior margin of clypeus with shallow, narrow impression along entire margin. Simple border of apical margin present, medially indistinctly emarginated. Antennae simple, blackish with yellow setation.

Pronotum. Completely covered with dark green tomentum. Lateral margins simply wrinkled, closer to midline simply punctured. Disc, anterior and posterior margins impunctate. Anterolateral margins with short, obtuse border, other parts of all margins unbordered. Setation not present. Parts with broken tomentum with golden-green lustre.

Scutellum. Triangular, apex obtusely rounded. Whole surface covered with dark green tomentum, impunctate.

Elytra. Similarly to other parts of dorsum covered with dark green tomentum. Semicircular punctures running in irregular lines. Concentration of punctures denser near lateral margins. Humeral calli simple and obtuse, impunctate.Apical calli better developed, densely wrinkled. Each elytron with obtuse costae in posterior half. Sutural ridge flat in basal half, elevated in posterior half, in last quarter of length sharp, protruding over elytral apex; its termination very sharp. Anterior and middle parts of epipleura impunctate, posterior part wrinkled, causing serration of margins.

Pygidium. Dark green, also covered with tomentum, intensely wrinkled. Apex with few reddish setae.

Ventral part. Green with metallic golden lustre. Each abdominal ventrite laterally wrinkled; transverse wrinkles short. Medial furrow wide, but very shallow. Metasternum dark green, shining. Its lateral parts longitudinally wrinkled, closer to midline with transverse wrinkles. Disc impunctate, with longitudinal furrow only medially; covered with reddish setae, except on disc. Mesometasternal process wider than long, apex broadly rounded. Punctures or setation absent. Prosternum and mentum dark green, intensely wrinkled, with abundant short yellowish to reddish setae.

Legs. Tarsi and tibiae dark green to black. Tarsi with golden-green reflection. Protibiae bidentate, posterior tooth very small, but discernible. Meso- and metatibiae carinate, with reddish setation, especially abundant at inner side. Femora wrinkled, with yellowish setae.

Male genitalia. Similar to other representatives of the subgenus, most similar to Protaetia (Macroprotaetia) milani Antoine & Pavićević, 1994 , but inner parts of parameres more slender, and apical ends almost parallel, also shape of membranous flap different ( Figs. 1d–e ).

Variability. Body length 24.8–27.1 mm. Protibiae of paratypes Nos. 3–4 are unidentate. In other respects all specimens are very similar to each other.

Sexual dimorphism. Female body length 24.0 and 25.5 mm. Both females available for study have bidentate protibiae, bodies slightly wider and more robust, punctation and wrinkling on head, pronotum and elytra more better defined, abdomen more arched and lacking middle furrow.

Differential diagnosis. In habitus, the new species resembles Protaetia (Macroprotaetia) inanis from Java. However, the structure of the genitalia is rather different and much closer to P. (M.) milani , occurring in Sumatra and the Malay Peninsula. Protaetia (Macroprotaetia) maxwelli sp. nov. differs from P. (M) milani as follows: 1) male protibia bidentate or with the proximal tooth at least indicated (always unidentate in P. (M.) milani ; 2) lateral margins of the posterior half of the pronotum straight (shallowly emarginate in P. (M.) milani ); 3) punctation of pronotum much coarser and denser; 4) sutural ridge of elytra protruding over apex and its termination very sharp (much less protruding over apex and its termination rounded in P. (M.) milani ); 5) body colouration grassy green (purpureous brown in P. (M.) milani ); 6) body length much less, only 24–27 mm; 7) inner parts of parameres apically slender and almost parallel (thicker, shorter, undulate and not parallel in P. (M.) milani ).

Etymology. Patronymic, in honour of Maxwell V. L. Barclay, curator of beetles at BMNH, who kindly lend me part of the type material.

Distribution. Nias Island, Indonesia.

Figures

Figs. 1–2. 1 – Protaetia (Macroprotaetia) maxwelli sp. nov.; 2 – P.(Pachyprotaetia) mentawaica sp. nov. a – habitus dorsally; b – habitus laterally; c – habitus ventrally; d – aedeagus apically; e – aedeagus laterally. Not in scale.