Anthonomus (Anthonomidius) dudkoi Legalov, 2021

Legalov, Andrei A., 2021, A new species of the genus Anthonomus Germar, 1817 (Coleoptera, Curculionidae) from Altai with a list of the Russian species, Ecologica Montenegrina 46, pp. 67-73 : 68-70

Anthonomus (Anthonomidius) dudkoi Legalov , sp. n.

http://zoobank.org/ urn:lsid:zoobank.org:act:F16EBD9F-1E55-4251-BC17-224102F65CF5

( Fig. 1 )

Type material: Holotype. Female ( ISEA), RUSSIA, Altai Republic, NE spurs of Kholzun Mountain Range, upper reaches of Poperechnaya Krasnoyarka River , 1950 m, 50.176° N, 84.928° E, Hedisarum ? alpinum, 2.VII.2021, R. Yu. Dudko . Paratype. Female ( ISEA), KAZAKHSTAN, Southwestern Altai , western shore of Markakol Lake, source of Kalzhyr River, 1450 m, 11.VII.1997, R. Yu. Dudko, V. K. Zinchenko .

Description

Female. Body black, covered with piliform white appressed scales. Scape yellow-brown. Rostrum 1.5 times as long as length of pronotum, subcylindrical, 5.4-5.5 times as long as wide at apex, 6.3 times as long as wide in middle and at base, weakly curved, with longitudinal carina from antennal attachment to base, finely punctate in apical part, densely punctate from antennal attachment to base. Antennal scrobes directed to eyes. Eyes quite large, finely faceted, convex in basal part. Forehead flattened, punctate, 0.8-0.9 times as narrow as rostrum base wide. Temples shorter than eye. Head widened behind eyes. Antennae inserted in apical one third, laterally. Scape long, 9.0 times as long as wide at apex, not reaching eye. Antennomeres 2-8 subconical. Antennomere 2 2.5 times as long as wide at apex, 0.2 times as long as and 0.7 times as narrow as scape. Antennomeres 3-6 subequal in wide. Antennomere 3 2.0 times as long as wide at apex, 0.6 times as long as and 0.8 times as narrow as antennomere 2. Antennomeres 4-7 subequal in length. Antennomere 4 1.3 times as long as wide at apex, 0.7 times as long as antennomere 3. Antennomere 7 equal in length and width, 1.3 times as wide as antennomere 6. Antennomere 8 about 1.1 times as long as wide, 1.3 times as long as and about 1.2 times as wide as antennomere 7. Antennal club compact, 2.2 times as long as wide in middle, 0.6 times as long as antennomeres 2-8 combined. Pronotum campanulate, 1.2-1.3 times as long as wide at apex, 0.8-0.9 times as long as wide in middle and at base, with rounded straight sides. Maximal in middle. Disk convex, densely and coarsely punctate. Distances between points less than diameter of points. Scutellum subtrapezoidal. Elytra 1.5-1.7 times as long as wide at base, 1.2-1.3 times as long as wide at middle, 1.8-2.2 times as long as wide at apical fourth, 2.2-2.4 times as long as pronotum. Base of pronotum and base of elytra subequal in width. Humeri slightly flattened. Elytral sides almost subparallel.

Elytral striae distinct. Stria 9 long, not merging with stria 10 near level of metacoxa. Interstriae wide, weakly convex, 4.5-5.0 times as wide as elytral stria, finely punctate. Wings not developed. Prosternum punctate. Pre- and postcoxal portions of prosternum short. Procoxal cavities contiguous. Metanepisternum about 6.0 times as long as wide in middle, finely punctate. Metaventrite about 1.9 times as long as length of metacoxal cavity, flattened, finely punctate. Abdomen convex, densely rugose-punctate. Abdominal ventrite 1 0.9 times as long as metacoxal length. Ventrite 2 1.7 times as long as ventrite 1. Ventrite 3 about 0.6 times as long as ventrite 2. Ventrite 4 about 0.9 times as long as ventrite 3. Ventrite 5 equal in length to ventrite 4. Procoxae large, conical. Mesocoxae narrowly separated. Metacoxae transverse. Femora thickened, with small tooth. Tibiae almost biconcave, with uncus and mucro. Tarsi quite long. Tarsomeres 1 and conical. Tarsomere 2 shorter than tarsomere 1. Tarsomere 3 bilobed. Tarsomere 5 elongate. Claws free, with distinct teeth. Length of body (without rostrum): 2.5-2.7 mm. Length of rostrum: 1.1-1.2 mm.

Differential diagnosis. The new species is similar to A. germanicus but differs in the dark body (excluding scape), wider pronotum, thinner and sparser piliform scales on the body, and thinner less curved rostrum.

Etymology. The species is named in Dr. Roman Yu. Dudko (Novosibirsk, Russia). Remarks. The new species occurs in mountain meadows ( Fig. 3 ) and was found on Hedisarum ? alpinum ( Fig. 4 ).

Distribution. Altai Mts. ( Fig. 2 ).

Figures

Figure 1. Anthonomus dudkoi sp. n., holotype, female: a - body, dorsally, b - abdomen, ventrally, c – body, laterally. Scale bar = 1.0 mm.

Figure 2. Distribution of the subgenus Anthonomidius from Asia: star – A. germanicus, octagon – A. dudkoi, square – A. morosus, circle – A. dauricus.

Figure 3. Habitat of Anthonomus dudkoi sp. n.

Figure 4. Host plant of Anthonomus dudkoi sp. n.