Eucinetus zhenhuai Li & Cai 2024, sp. nov.
Creators: name: Li, Yan-Da
name: Engel, Michael S.
name: Huang, Di-Ying
name: Cai, Chen-Yang
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Eucinetidae
Eucinetus
Eucinetus zhenhuai

description: Eucinetus zhenhuai Li & Cai sp. nov.
(Figs 9–12)
Material. Holotype, NIGP203941, female.
Etymology. The species is named after the coleopterist Dr. Zhenhua Liu.
Locality and horizon. Amber mine located near Noije Bum Village, Tanai Township, Myitkyina District, Kachin State, Myanmar; unnamed horizon, mid-Cretaceous, Upper Albian to Lower Cenomanian.
Diagnosis. Labrum weakly biemarginate (Fig. 11A). Apical maxillary palpomere asymmetrical (Fig. 11A). Basal antennomeres relatively elongate (especially antennomeres 3–5); antennomere 3 about 0.85 times as long as 4 (Fig. 11A); antennomere 11 about 2.1 times as long as wide (Fig. 11B). Scutellar shield acute at apex (Fig. 11 GA). Elytra about 2.1 times as long as combined width. Hind wings present. Metanepisternum at least twice as long as wide. Meso- and metatibiae with relatively dense spines along outer edge (Fig. 11D,E). Mesotibial spurs large; both distinctly stouter than spines along apical fringe of mesotibia (Fig. 11D). Metatibial spurs unequal (Fig. 11D).
Description. Body fusiform and slender, about 2.5 mm long, 1.0 mm wide; surface with fine short setae.
Head deflexed against ventral side of prothorax; entirely concealed from above by pronotum. Compound eyes weakly emarginate anteriorly, with interfacetal setae. Antennae 11-segmented, filiform; basal antennomeres distinctly elongate (especially antennomeres 2–5); distal antennomeres somewhat shortened; antennomere 3 about 0.85 times as long as 4; antennomere 11 about 2.1 times as long as wide. Frontoclypeal suture straight anteriorly and with distinct anterolateral angles. Labrum transverse, apically very weakly biemarginate. Mouthparts non-suctorial. Apical maxillary palpomere asymmetrical.
Prothorax widest at base. Lateral pronotal carinae complete, simple. Pronotal disc simple. Procoxae obliquely oriented, well-projecting, narrowly separated. Scutellar shield triangular, acute at apex. Elytra about 2.1 times as long as combined width; transversely strigulate; sutural stria present; epipleuron narrow, incomplete. Hind wings present. Metaventral posterior process without externally discernable discrimen. Metanepisternum at least twice as long as wide. Metacoxae contiguous; metacoxal plates well-developed and greatly enlarged.
Mid and hind legs with fringe of spines at apices of tibiae and tarsomeres; fore legs without apical fringes of spines. Meso- and metatibiae with relatively dense spines along outer edge. Mesotibial spurs large; both distinctly stouter than spines along apical fringe of mesotibia. Metatibial spurs unequal. Tarsi 5-5-5, simple. Meso- and metapretarsal claws with accessory lobes (Fig. 11F).
Abdomen with five ventrites. Ovipositor simple, with gonocoxites and gonostyli (Fig. 11H,I).
description: Published as part of Li, Yan-Da, Engel, Michael S., Huang, Di-Ying & Cai, Chen-Yang, 2024, Three new species of the extant genus Eucinetus from mid-Cretaceous amber of northern Myanmar (Coleoptera: Eucinetidae), pp. 214-230 in Zootaxa 5492 (2) on pages 223-224, DOI: 10.11646/zootaxa.5492.2.4, http://zenodo.org/record/13219234