Lindenius

Lepeletier de Saint Fargeau & Brullé, 1835

Species Guides

Lindenius montezuma

Lindenius is a of solitary in the Crabronidae containing 63 known , predominantly distributed in the Palearctic with some Nearctic representatives. Species exhibit diverse prey specialization: L. pygmaeus armatus hunts chalcid wasps (primarily Pteromalidae), while L. albilabris preys on paralyzed spiders. Nests are excavated in sandy or loess soils, with burrows containing multiple provisioned with prey items. are active from late May to late July and visit flowers for nectar.

Lindenius by (c) Matteo Marcandella, some rights reserved (CC BY), uploaded by Matteo Marcandella. Used under a CC-BY license.

Lindenius by (c) Will Kuhn, some rights reserved (CC BY), uploaded by Will Kuhn. Used under a CC-BY license.

Pronunciation

How to pronounce Lindenius: //lɪnˈdeː.ni.us//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Habitat

Sandy areas, wasteland, and non-vegetated sites with hardened or sandy-clay soil; nesting substrate includes loess and flat to slightly sloping terrain. Nests are excavated in soil with burrows approximately 2.5 mm in diameter and 8–10 cm deep.

Distribution

Primarily Palearctic; some in the Nearctic. Documented in northern Poland (Kowalewo Pomorskie, Sierakowo), with L. p. armatus distributed across Europe excluding northern Africa, the Iberian Peninsula, France, and Italy. GBIF records from Denmark, Norway, and Sweden.

Seasonality

active from late May to late July.

Diet

Prey specialization varies by : L. pygmaeus armatus hunts chalcid wasps (Hymenoptera: Chalcidoidea, primarily Pteromalidae), averaging 14 prey items per ; L. albilabris provisions cells with single paralyzed spiders. feed on nectar from flowers including Achillea millefolium, Peucedanum oreoselinum, Daucus carota, and Tanacetum vulgare.

Host Associations

Pteromalidae: Coelopisthia extenta - preyparalyzed and stored in nest
Pteromalidae: Cyclogastrella simplex - preyparalyzed and stored in nest
Pteromalidae: Cyrtogaster vulgaris - preyparalyzed and stored in nest
Pteromalidae: Dibrachys cavus - preyparalyzed and stored in nest
Pteromalidae: Meraporus graminicola - preyparalyzed and stored in nest
Pteromalidae: Psychophagus omnivorus - preyparalyzed and stored in nest
Pteromalidae: Pteromalus sp. - preyparalyzed and stored in nest
Pteromalidae: Stenomalina gracilis - preyparalyzed and stored in nest
Pteromalidae: Trichomalus perfectus - preyparalyzed and stored in nest
Myrmosa atra - observed entering burrows of L. pygmaeus armatus
Senotainia conica - kleptoparasiteobserved entering burrows of L. pygmaeus armatus
spiders - preyparalyzed and stored in as larval food for L. albilabris

Life Cycle

Females excavate burrows leading to 3–5 (L. pygmaeus armatus) or 1–3 cells (L. albilabris). is deposited at base of prey or on paralyzed spider. Larva consumes provisions in approximately 5 days. Cocoon formed from silk threads covered with fragments of prey, measuring 5–7 mm long and 2.5–3.5 mm wide.

Behavior

Females transport prey in using middle and hind legs. Extremely cautious nest entry with winding detours even when no kleptoparasites are present. Nest entrance remains open during provisioning. Females wait out unfavorable weather inside nest. Provisioning frequency averages 3–15 minutes (typically ~5 minutes). Nests often clustered, with 2 nests documented per 20 cm². Excavated soil forms small mound around entrance.

Ecological Role

of chalcid wasps and spiders; potential agent for pest . Prey for (Myrmosa atra) and kleptoparasites (Senotainia conica). through flower visitation. Soil-nesting activity contributes to nutrient cycling and soil aeration.

More Details

Phylogenetic relationships

L. pygmaeus is sister to L. panzeri based on COI barcode data. Possible cryptic speciation indicated in Western Palearctic Lindenius , requiring further study with additional markers and larger .