Temnostethus (Temnostethus) gracilis Horváth, 1907

Anthocoris lugubris Flor, 1860: 647 non Boheman, 1852; Temnostethus pusillus var. gracilis Horváth, 1907: 311; Temnostethus gracilis Horváth (upgraded by Stichel, 1937).

Distribution in Iran. Guilan (Linnavuori & Hosseini 2000).

General distribution. Euro Siberian, Canada.

Plant associates. Pirus malus, P. communis, Prunus spinosa, Crataegus sp. ( Rosaceae), Fraxinus sp. ( Oleaceae), Quercus sp., Fagus sp. ( Fagaceae), Betula sp., Corylus sp. ( Betulaceae), Acer sp. ( Sapindaceae), Salix sp., Populus sp. ( Salicaceae), mosses, lichens (Péricart 1972).

Prey records. Chaitophorus populi Koch, 1854 ( Hemiptera: Aphididae), Psyllidae (Hemiptera) (Péricart 1972).

Biology. In this species there is an embryonic diapause and only 4 larval instars (Saulich & Musolin 2009). In Western Europe females of T. gracilis overwinter with empty ovarioles (so both adults and oviposited eggs overwinter) (Saulich & Musolin 2009).