Endelus (Endelus) marseuli, H. Deyrolle, 1864

Kalashian, Mark Yu., 2023, Endelus barriesi n. sp. (Coleoptera: Buprestidae: Agrilinae: Aphanisticini) from Sulawesi Island, Indonesia, with lectotype designations in the Endelus marseuli species-group, Israel Journal of Entomology (Oxford, England) 52 (17), pp. 21-28 : 26-27

Key to the species of Endelus (Endelus) marseuli Deyrolle-species-group

1 Eyes rounded in dorsal aspect ( Figs 1, 3, 4) ......................................................2

– Eyes angularly projected from head outline in dorsal aspect (as in Fig. 5).......4

2 Body more elongate, 2.3× as long as wide, elytra 1.75× as long as wide. Punctuation of head and pronotum denser and more distinct. 3.0 mm. The Philippines: Negros Island ....................................................................... lunatus

– Body more robust, 2.0–2.2× as long as wide, elytra 1.50–1.7× as long as wide. Punctuation of head and pronotum sparser and less distinct..............................3

3 Dorsal surface darker, blackish-violet with indistinct bronzy-greenish reflection on pronotum, elytral spots smaller, bluish-green, elytral apex slightly brightened. 3.52 mm. Sulawesi ................................................................................. barriesi .

– Head, pronotum and bright portions of elytral pattern golden with fine greenish reflection or green with fine golden reflection. Elytral pattern formed by bigger spots and bands, posterior spot reaching elytral apex. 3.1–3.7 mm. Borneo and Sumatra Isl., Mentawai Archipelago.................................... marseuli ( Figs 3, 4)

4 Oculofrontal margins very obtuse-angled, frontovertex very slightly concave. Background coloration of body golden-yellow, with very slight greenish or reddish reflection. 3.4–3.8 mm. Sulawesi .......................................... scintillans ( Fig. 5.)

– Oculofrontal margins less obtuse-angled, concavity of frontovertex deeper. Background coloration of body darker, golden-green, dark bronzy with greenish reflection or nearly black with bluish or violet reflection..................................5

5 Body more robust, 2.05–2.10× as long as wide, elytra 1.6× as long as wide. Body dark bronzy with more or less distinct greenish reflection on sides of pronotum, elytra dark violet-blue with 3 pairs of bluish-green spots of moderate size – rounded near humeri and at the level of posterior ¼, and slightly obliquely transverse near middle. 3.12–3.5 mm. Sulawesi ..................................... barclayi

– Body more elongate, 2.25–2.40× as long as wide, elytra 1.7-1.8 as long as wide ....................................................................................................................6

6 Body nearly black with bluish or violet reflection more pronounced on elytra, elytra with bluish-green pattern of two pairs of rather small slightly irregularly round spots on humeral tubercles and apically, narrow band widely interrupted near suture approximately at middle and pair of large oblique spots between posterior ¼ and apical spots. Frons with indistinct traces of punctures, vertex with sparse very superficial punctures of moderate size. 3.0– 3.7 mm. Sulawesi .............................................................................................................. splendens

– Body golden-green, elytra dark violet-blue with golden-green pattern of pair of large spots on humeri, two bands near middle and posterior 1/4 widely interrupted near suture, and pair of small indistinct spots apically. Frons with few big rounded superficial punctures, on vertex punctures denser and bigger, flat but rather distinct. 3.50–3.53 mm. Sulawesi ....................................................... nairaarum