S. Mahunka szerk.: Folia Entomologica Hungarica 48. (Budapest, 1987)
Examined material: 7. VII. 1888 (without locality) lo , 1 g (without locality), coll. TOMALA, flavlventrls; Budapest-Zugló, 21. VII. 1954. 1 o, Igt. Z. MÉSZÁROS; all coll. HNHM. Synanthedon loranthi (Králicek, 1966) A recently described species, currently confused with S. cephiformis (Ochsenheimer) . Most of the older data on the occurrence of S. cephiformis in localities with absent fir trees (Abies alba), refer to this species (cf. KOVÁCS 1953; 1956). S. loranthi has so far been known from Austria (WAGNER 1904; as S. cephiformis ; Kasyl980), Czechoslovakia (KRÁLICEK 1966; LASTUVKA 1983a), Yugoslavia (KRANJCEV 1979 b; as S. cephiformis ) and Bulgaria (ENGELHARD 1974; as S. cephifor mis ). Characteristic distinctive features of the species S. loranthi - S. cephiformis are: the colouring of the outer edge of the 1st coxae is yellow in S. cephiformis throughout, while in S. loranthi max. to 4/5 from the base; the colouring of the 3rd tibiae is metallic shiny violet in S. loranthi , while metallic shiny greenish-blue in S. cephiformis ; the size of the hind wing discal spot is markedly larger in S. cephiformis ; the abdomen of S. loranthi is as a rule with 3 yellow rings in males, 2-3 in females; the abdomen of S. cephiformis usually has 4 rings in males and 3 in females. The distinctions in morphology of the genitalia are perceptible when a larger number of specimens are studied. Further distinctive characters are presented by LASTUVKA (1983 a) (Figs 1,2,11,12). The larva develops in Viscum spp. and Loranthus europaeus. The occurrence of the host plants is probably of decisive importance for the occurrence of otherwise eury valent species. New for Hungary ! Examined material: Szár, 14. VII. 1957. 1 o. Igt. LENGYEL; Budakeszi, 14. VI. 1951. 1 o*, Igt. LENGYEL; Magyaróvár, 5. VI. 1932. 1 cT, Igt. RUFF; Pét, 22. Vn. 1962. 1 o, Igt. NYIRŐ; Pécs, 1872. 2 (f; all coll. HNHM. Figs 1-8. Fore wing of male. 1 - S. loranthi, 2 - S. cephiformis, 3 - B. albanensis, 4 - B. ichneumoniformis, 5 - Ch. similis, 6 - Ch. annellata, 7 - Ch. tenthredlni forrni s, 8 - Ch. empiformisj