Ectinogramma Thomson. Although 1864
Year: 2025
Type: article
Abstract: Ectinogramma Thomson, 1864 Ectinogramma Thomson, 1864: 96; Pascoe 1866; Lacordaire 1872: 692, 700; Gemminger and Harold 1873: 3131; Aurivillius 1923: 359; Breuning 1961: 202 (catalogue). Type species: Ectinogramma isosceloides Thomson, 1864. Spinogramma Breuning, 1947: 61; Breuning 1961: 202 (catalogue). Type species: Spinogramma ochreovittata Breuning, 1947, syn. nov. Remarks. The morphological comparison of holotypes of Ectinogramma isosceloides Thomson, (Fig. 1 A – C) and Spinogramma ochreovittata Breuning (Fig. 3 A – C) reveals that both species belong to the same genus, Ectinogramma, based on shared morphological characters. Therefore, Spinogramma Breuning is determined to be a junior synonym of Ectinogramma Thomson. Although detailed descriptions of both Spinogramma and Ectinogramma are provided by Breuning and Thomson, respectively, the description of Ectinogramma is enhanced below by examination of both types and additional examined material. Redescription. Body slender and elongate (body length / humeral width of elytra: 4.8–8.2) based on 16 specimens of E. isosceloides and one specimen of E. ochreovittata. Eyes finely faceted, lower eye lobe distinctly longer than gena (Figs 1 B, F, G, 3 B). Antennal tubercles distinctly raised and closed to each other (Figs 1 A, E, G, 2 A – D, 3 A). Antennae slender, distinctly longer than body, scape gradually thickened from middle to apex, apex of scape nearly extending to base of pronotum, scape longer than antennomere III, antennomere III longer than antennomere IV (Figs 1 A, E, 2 A – D, 3 A). Pronotum sub-cylindrical, slightly expanded posteriorly and distinctly longer than wide (Figs 1 A, E, 2 A – D, 3 A). Procoxal cavities closed posteriorly and triangular externally. Mesocoxal cavities opened externally to mesepimera. Scutellum linguiform (Figs 1 A, E, 2 A – D, 3 A). Elytra slender and elongate, gradually constricted from base to middle, and gradually expanded from middle to about apical 1 / 5, finally gradually constricted towards apex, emarginated apically (Figs 1 A, E, 2 A – D, 3 A). Femora robust, metafemora distinctly shorter than abdominal ventrite I, hind legs distinctly shorter than abdominal ventrite I – III combined (Figs 1 B, C, 1 F, 3 B, C). Diagnosis. Ectinogramma resembles Elongatopothyne Breuning (1963) by (1) slender and elongated body form; (2) slender antennae, distinctly longer than body; (3) elongated pronotum; (4) linguiform and densely clothed scutellum; (5) elytra apically emarginated and coarsely and densely punctate; (6) mesocoxal cavites opened externally to mesepimera; and (7) hind legs distinctly shorter than abdomen. Ectinogramma can be differentiated from Elongatopothyne by the following characters: (1) shorter antennae, less than twice length of body (in Elongatopothyne with antennae three times length of body); (2) scape longer than antennomere III (El. with scape shorter than antennomere III); (3) antennomere III longer than IV (El. with III shorter than IV); and (4) pronotum slightly expanded posteriorly (El. with pronotum not expanded posteriorly). Distribution. Indonesia, Malaysia.
Authors: Huang, Gui-Qiang, Li, Yao-Lan, Lu, Hai-Jun, Liu, Dong-Shuo
Institution: Liupanshui Normal University
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W6930781125
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