Journal of Insect Biodiversity

**Discovery of a new fossil species of Mastogenius Solier, 1849 from Eocene Baltic amber (Coleoptera: Buprestidae: Polycestinae)**

YUTAKA TAMADERA — 2026-05-28

To date, only two named species of Buprestidae have been described from Eocene Baltic amber. Based on a well-preserved adult specimen, a new species, Mastogenius aquilonaris sp. nov., is described from Baltic amber as the second fossil species of the genus Mastogenius Solier, 1849. This discovery reveals the further hidden paleodiversity of jewel beetles during the Eocene. Furthermore, our finding of the second Baltic amber species of this genus—now remarkably diversified primarily in the Neotropics—holds significant paleobiogeographical interest. We discuss not only the zoogeographical insights but also potential host plant families and paleoclimate.

**A new species of the genus Leptobium Casey, 1905 from Libya, with new and additional records of the genus in the western Palaearctic region (Coleoptera: Staphylinidae: Paederinae)**

SİNAN ANLAŞ — 2026-05-28

Leptobium libycum sp. nov. from north-western Libya is described, illustrated and compared with related congeners. The distribution of the Leptobium species in Libya is mapped. New and additional records of four species and two subspecies, L. artum (Karsch), L. brevicolle (Koch), L. densiventre (Fauvel), L. gracile (Gravenhorst), L. nigricolle continentale Jarrige, L. nigricolle nigricolle (Wollaston), from the western Palaearctic region are also reported. Among them, L. densiventre from the Italian mainland and L. gracile from Iraq and Libya are recorded for the first time.

**First record of Corythucha ciliata (Say, 1832) (Hemiptera: Tingidae) from North Africa**

AMIR BOULEMTAFES — 2026-05-28

The alien North American species of lace bug Corythucha ciliata (Say, 1832) was found on sycamore trees in several localities in Algeria (Annaba Province, Annaba and Seraïdi municipalities) between November 2025 and January 2026. This represents the first record of the species in Algeria and North Africa. Overwintering individuals of the species were found on a large number of sycamore trees in all observed locations, suggesting that the species has become established in the region and is likely more widespread than documented here.