Lyctocoris

Yamada, Kazutaka, Yasunaga, Tomohide & Ichikawa, Toshihide, 2012, A new species of Lyctocoridae (Hemiptera: Heteroptera: Cimicoidea) feeding on the exuded sap of Sawtooth Oak, Quercus acutissima, in Japan, Zootaxa 3525, pp. 65-74 : 73

Key to Japanese species of Lyctocoris

1. Hemelytra almost yellowish transparent.......................................................... L. beneficus

- Hemelytra almost black or blackish brown................................................................ 2

2. Hemelytra uniformly black, with pale brown apical clavus and basal embolium........................... L. obscurus

- Hemelytra blackish brown, with some pale yellow markings................. L. ichikawai Yamada & Yasunaga sp. nov.