Hylaeus strenuus

Natural history and identification

This introduced solitary bee uses cavities in plant stems. A 2021 Oʻahu study documented its nests in naupaka and tree heliotrope, overlapping with nesting resources used by the native H. anthracinus. The authors identified possible competition for nest sites; they did not demonstrate a Kauaʻi population effect. A yellow facial marking alone does not distinguish this introduced bee from Hawaiʻi's native yellow-faced bees.

Kauaʻi occurrence and evidence

Atlas occurrence category: Present. The Kauaʻi record is classified as “Present”. Its cited evidence source is Matsunaga et al. 2019 alien arthropod update.

Account coverage

Published species details have been added. A complete Kauaʻi-specific account of identification, habitat, feeding, reproduction, and population trend is not yet established by the sources linked here.

Names and classification

Scientific name

Hylaeus strenuus

Family

Colletidae

Order

Hymenoptera

Record type

species

Kauaʻi occurrence and status

Kauaʻi occurrence

Present

Origin

Introduced

Conservation status

Not assessed

Process and seasonal context

Seasonal description

Hylaeus strenuus belongs to Colletidae in the order Hymenoptera. Its recorded origin status is introduced.

Sources and further reading

• Matsunaga et al. 2019 alien arthropod update
• Natural history and identification — species source