🐾 Western Conifer Seed Bug

Leptoglossus occidentalis · wildlife atlas entry

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The western conifer seed bug , Leptoglossus occidentalis , sometimes abbreviated as WCSB , is a species of true bug (Hemiptera) in the family Coreidae. It is native to North America west of the Rocky Mountains (California to British Columbia, east to Idaho and Nevada) but has in recent times expanded its range to eastern North America, and has become an invasive species in parts of Europe. Text: Wikipedia, CC BY-SA.

Western Conifer Seed Bug — reference photo from iNaturalist — (c) Holger Krisp, some rights reserved (CC BY) · cc-by

Record card

Scientific name	Leptoglossus occidentalis
Rank	species
Community observations	98,054 research-grade records on iNaturalist

Classification

kingdom Animalia › phylum Arthropoda › class Insecta › order Hemiptera › family Coreidae

Seen in the wild — community photographs

Western Conifer Seed Bug photograph by the iNaturalist community — 2026-09-27 · Drôme, Rhône-Alpes, France
(c) Thierry Arbault, some rights reserved (CC BY) · cc-by

Western Conifer Seed Bug photograph by the iNaturalist community — 2026-10-24 · 34570 Vailhauquès, France
(c) Antoine Padovani, some rights reserved (CC BY-NC) · cc-by-nc

Western Conifer Seed Bug photograph by the iNaturalist community — 2026-10-18 · Torino, Piemonte, IT
(c) Alessio Dos Chernobyl, some rights reserved (CC BY-NC) · cc-by-nc

Western Conifer Seed Bug photograph by the iNaturalist community — 2026-10-24 · 26400 Eurre, France
(c) darl1a, some rights reserved (CC BY-NC) · cc-by-nc

Western Conifer Seed Bug photograph by the iNaturalist community — 2026-10-21 · Kasernenstraße, Leoben, Styria, AT
(c) vmdem, some rights reserved (CC BY-NC) · cc-by-nc

Photographs are Creative Commons-licensed observations from iNaturalist, credited as each licence requires. Click any photo for the full research record.

All Western Conifer Seed Bug records on iNaturalist → · Encyclopedia entry (Wikipedia) →

Data: iNaturalist open API · stored on this server by the wildlife build so a page request never reaches the network · observations filtered to research grade with photos.

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