Orsodacne Latreille, 1802

Legalov, Andrei A. & Sergeev, Мaxim Е., 2022, First record of Orsodacne cerasi (Linnaeus, 1758) (Coleoptera: Orsodacnidae) from Russian Far East, Ecologica Montenegrina 55, pp. 49-53 : 50-51

Genus: Orsodacne Latreille, 1802

Species: Orsodacne cerasi (Linnaeus, 1758) ( Fig. 1)

Material: female ( ZIN), RUSSIA, Primorskii Krai , Kedrovaya Pad’ Res., VII.-VIII.1956, L.N. Medvedev .

Description. Body yellowish-brown, covered with sparse semierect setae. Head capsule hypognathous, short, constricted behind eyes. Labrum free. Mandibles medium, curved. Eyes rounded, convex. Forehead wide, impressed, finely punctate, without grooves. Temples very short. Antennae inserted before eyes, filiform and long, reaching humeri. Antennomere 1 suboval, about 1.9 times as long as wide. Antennomeres 2-10 long-conical. Antennomeres 2-4 equal in width. Antennomere 2 2.0 times as long as wide, about 0.8 times as long as and 0.7 times as narrow as antennomere 1. Antennomere 3 subequal to antennomere 2. Antennomere 4 about 2.3 times as long as wide, about 1.1 times as long as antennomere 3. Antennomeres 5- 6 equal in width. Antennomere 5 about 2.1 times as long as wide, 1.1 times as long as and 1.2 times as wide as antennomere 4. Antennomeres 6-8 equal in length. Antennomere 6 about 2.5 times as long as wide, 0.9 times as narrow as antennomere 5. Antennomere 7 about 1.7 times as long as wide, 1.1 times as wide as antennomere 6. Antennomere 8 about 2.3 times as long as wide, about 0.8 times as narrow as antennomere 7. Antennomere 9 2.3 times as long as wide, 1.1 times as long as and about 1.1 times as wide as antennomere 8. Antennomere 10 about 2.1 times as long as wide, 0.9 times as long as and equal in width to antennomere 9. Antennomere 11 2.7 times as long as wide, about 1.2 times as long as and 0.9 times as narrow as antennomere 10, weakly pointed at apex. Pronotum with weakly arcuate sides in apical and middle thirds, concave before middle, about 1.2 times as long as wide at apex, about 0.8 times as long as wide in middle, subequal to wide at base, quite densely punctate. Distances between punctures larger than their diameters. Disc of pronotum moderately convex. Base 0.6 times as narrow as elytral base. Scutellum distinct, semioval, 0.7 times as long as wide. Elytra subparallel-sided, with weak humeri and distinct epipleuron, without striate, 2.2 times as long as wide at base, 1.9 times as long as wide in middle, about 2.5 times as long as wide at apical fourth, 3.4 times as long as pronotum. Distances between punctures larger than their diameters. Scutellar striole present. Procoxal cavities narrowly separated. Metanepisterna narrow. Wings developed. Abdomen with free ventrites. Ventrites 1 and 2 subequal in length. Ventrites 3 and 4 equal in length. Ventrite 3 shorter than ventrite 2. Ventrite 5 slightly shorter than ventrite 4. Legs long. Femora thickened. Tibiae quite almost straight, with two spurs, without mucros. Tarsomere 1 wide-conical. Tarsomere 2 conical. Tarsomere 3 bilobed. Tarsomeres 1-3 with pulvilli on lower surface. Tarsomere 5 long. Trasal claws free and bifid.

Remarks. Yellow coloration is most common in beetles in Asiatic Russia. Specimens with a black scutellum, elytra (sometimes partially yellow), partially a head, prothorax, meso- and metaventrite, and abdomen or with a black body are recorded in the southeast of Western Siberia.

Distribution. Northern Europe: Great Britain, Denmark, Lithuania, Latvia, Estonia, Norway, Sweden, Finland; Southern Europe: Spain, France, Italy; Western Europe: the Netherlands, Switzerland, Germany, Liechtenstein, Austria; Balkans: Croatia, Serbia, Bulgaria, Macedonia; Eastern Europe: Czech Republic, Poland, Hungary, Belarus, Ukraine, Moldavia, Romania; European part of Russia; Caucasus: Azerbaijan; Asia minor: Western Turkey, Southern Iran; North-western and Eastern Kazakhstan; Western and Middle Siberia, Russian Far East.