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macrocercus Hansson

Antenna lateral, female.

Antenna lateral, male.

Head frontal, female.

Head frontal, male.

Vertex, female.

Thoracic dorsum, female.

Thoracic dorsum, female paratype.

Thoracic dorsum, male.

Thoracic dorsum, male paratype.

Propodeum dorsal, female.

Propodeum dorsal, male.

Gaster dorsal, female.

Originally described in

Memoirs of the American Entomological Institute, Vol. 82:243.

Diagnosis

Upper frons and lateral vertex with raised and strong reticulation; mesoscutum and scutellum dark metallic bluish-green, mesoscutum with raised and rather strong reticulation, scutellum with engraved and very weak reticulation; femora predominantly metallic bluish-green, with apices yellowish-white; colour of tibiae variable (see below); female gaster elongate, MM/LG = 0.6, first gastral tergite with weak punctures posteriorly. Similar to latrodecti (and with similar host preferences), but differs in having a long female gaster and a long median carina on propodeum.

Distribution

Costa Rica.

Biology

The specimens in the type series have been reared from an egg cocoon of an unidentified araneid spider (Araneidae).

Similar species in Lucid key

caudatus, but macrocercus with frons with interscrobal area and part just above frontal suture smooth, flagellum short, e.g. 1st flagellomere 1.1X as long as wide.

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Depository of primary type

Instituto Nacional de Biodiversidad (INBio), in Costa Rica.