Caenorhinus (Flavodeporaus) nahangensis Legalov 2022, sp. nov.
Creators: name: Legalov, Andrei A.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Attelabidae
Caenorhinus
Caenorhinus nahangensis

description: Caenorhinus (Flavodeporaus) nahangensis Legalov, sp. nov.   
http://zoobank.org/ urn:lsid:zoobank.org:act: 649F0E6D-92E9-4981-AE98-DFBF0C6C92C6  
(Figs. 1-3)  
 Type material: Holotype, male (ZIN), Vietnam, Tuyên Quang Province, 160 lm NNW Ha Noi, NE env. Na Hang, 150-200 m, 11.VI.1996, A. Napolov, I. Roma. Paratypes, female (ZIN), female (ISEA), idem.   
 Description   
 Male. Body yellow, covered with decumbent light coloured hairs. Antennomeres 3-11, apices of femora, tibiae, and tarsomeres 1-2 black; apex of rostrum, antennomeres 1-2, tarsomeres 3-5 dark-brown; vertex, pronotum yellow-brown; elytra greenish; ventrites 4 and 5, pygidium and propygidium red. Rostrum rather long, 1.1 times as long as pronotum, 2.5 times as long as wide at apex, 3.4 times as long as wide at middle and 3.0 times as long as at base, slightly curved, expanded to apex, weakly flattened, sparsely punctate. Mandibles large. Eyes large, strongly convex, round, finely fused. Forehead weakly impressed in middle, 1.3 times as wide as width of rostrum basally, finely punctate. Temples quite long, 0.6 times as long as eye. Vertex convex, finely punctate. Neck well defined, transversely wrinkled. Antennae inserted subapically in rostrum, extend middle of pronotum. Antennomeres 1 and 2 long-oval. Antennomere 1 1.8 times as long as wide in apex. Antennomere 2 1.7 times as long as wide, 0.9 times as long as and 0.9 times as narrow as antennomere 1. Antennomeres 3-9 long-conical. Antennomere 3 3.3 times as long as wide, 1.7 times as long as and 0.9 times as narrow as antennomere 2. Antennomeres 4-6 subequal. Antennomere 4 2.7 times as long as wide, 0.8 times as long as antennomere 3. Antennomere 7 2.1 times as long as wide, 0.9 times as long as and 1.2 times as wide as antennomere 6. Antennomere 8 1.8 times as long as wide, 0.9 times as long as and 1.1 times as wide as antennomere 7. Antennal club strongly not compact. Antennomere 9 2.4 times as long as wide, 1.7 times as long as and 1.3 times as wide as antennomere 8. Antennomere 10 equal to antennomere 9. Antennomere 11 4.0 times as long as wide, 1.3 times as long as and 0.8 times as narrow as antennomere 10. Pronotum campanulate, about 1.1 times as long as wide at apex, 0.7 times as long as wide in middle and at base. Disk weakly convex, densely punctate. Scutellum trapezoid, finely punctate. Elytra 1.6 times as long as wide at base, 1.4 times as long as wide at middle and at apical fourth, 3.5 times as long as pronotum. Humeri slightly flattened. Elytral striae distinct. Scutellar striole absent. Stria 9 full, merging with stria 10 near metacoxa. Interstriae weakly convex, wider than elytral stria, densely punctate. Prosternum finely punctate. Pre- and postcoxal portions of prosternum short. Procoxal cavities contiguous. Metanepisternum 2.8 times as long as wide, quite coarsely punctate. Metaventrite 1.7 times as long as length of metacoxa, weakly convex, punctate. Abdomen convex, finely punctate. Ventrite 1 about 0.6 times as long as length of metacoxa. Ventrite 2 1.7 times as long as ventrite 1. Ventrites 3-5 equal in length. Ventrite 3 0.9 times as long as ventrite 2. Procoxae large, conical. Metacoxae transverse. Femora weakly thickened. Tibiae almost straight, flattened, with costate dorsal margin. Pro- and mesotibiae with obtuse mucro. Mesotibiae very weakly curved. Tarsi long. Tarsomere 1 long-conical. Tarsomere 2 conical. Tarsomere 3 bilobed. Tarsomere 5 elongate. Tarsal claws divergent and dentate. Total body length (without rostrum) 4.6 mm. Length of rostrum 0.8 mm.   
 Female. Rostrum rather long, 0.9 times as long as pronotum, 2.1 times as long as wide at apex, 3.3 times as long as wide at middle and 3.0 times as long as at base. Forehead 1.2 times as wide as width of rostrum basally. Temples long, 0.6 times as long as eye. Antennae inserted near middle of rostrum. Antennomere 1 1.7 times as long as wide in apex. Antennomere 2 2.2 times as long as wide, 1.1 times as long as and 0.9 times as narrow as antennomere 1. Antennomeres 3-5 equal in length. Antennomere 3 3.5 times as long as wide, 1.1 times as long as and 0.7 times as narrow as antennomere 2. Antennomeres 4-5 subequal. Antennomere 4 2.8 times as long as wide, 1.3 times as wide as antennomere 3. Antennomeres 6-8 subequal in length. Antennomere 6 2.0 times as long as wide, 0.9 times as long as and 1.2 times as wide as antennomere 5. Antennomere 7 1.7 times as long as wide, 1.2 times as wide as antennomere 6. Antennomere 8 1.5 times as long as wide, 1.1 times as wide as antennomere 7. Antennomere 9 1.8 times as long as wide, 1.8 times as long as and 1.5 times as wide as antennomere 8. Antennomere 10 equal to antennomere 9. Antennomere 11 2.6 times as long as wide, 1.2 times as long as and 0.8 times as narrow as antennomere 10. Pronotum about 1.3 times as long as wide at apex, 0.9 times as long as wide in middle and at base. Elytra 1.6 times as long as wide at base, 1.4 times as long as wide at middle and about 1.3 times as long as wide at apical fourth, 2.6 times as long as pronotum. Metanepisternum 3.3 times as long as wide. Metaventrite 1.6 times as long as length of metacoxa. Ventrite 1 about 0.8 times as long as length of metacoxa. Ventrite 2 1.7 times as long as ventrite 1. Ventrite 3 0.6 times as long as ventrite 2. Ventrite 4 about 0.5 times as long as ventrite 3. Ventrite 5 about 0.8 times as long as ventrite 4. Total body length (without rostrum) 3.7-4.3 mm. Length of rostrum 0.9-1.0 mm.   
 Differential diagnosis. The new species is similar to Caenorhinus (Flavodeporaus) lobanovi Legalov, 2021 from Laos but differs from it in the different body coloration, narrower rostrum, very weakly curved mesotibiae, densely punctate elytral interstriae, obtuse apex of the aedeagus, and the form of the basal sclerite. From Vietnamese C. nigrobasalis Legalov, 2003, it is distinguish in the narrower rostrum, finely punctate forehead, greenish elytra, red ventrites 4 and 5, pygidium and propygidium, obtuse apex of the aedeagus, and the form of the basal sclerite.   
 Etymology. From Na Hang locality.   
 Localisation. North Vietnam, Tuyên Quang Province.
description: Published as part of Legalov, Andrei A., 2022, A new species of the genus Caenorhinus Thomson, 1859 (Coleoptera, Rhynchitidae) from North Vietnam, pp. 33-37 in Ecologica Montenegrina 50 on pages 34-37, DOI: 10.37828/em.2022.50.5, http://zenodo.org/record/13239873