Eriglenum tristum Smith

Smith, David R., Janzen, Daniel H. & Hallwachs, Winnie, 2013, Food plants and life histories of sawflies of the families Argidae and Tenthredinidae (Hymenoptera) in Costa Rica, a supplement, Journal of Hymenoptera Research 35, pp. 17-31 : 20

Eriglenum tristum Smith Figs 16 , 18

Eriglenum tristum Smith, 1992: 53.

Remarks.

This species was described from a single female from Cartago, Turrialba, Costa Rica. Another species, Eriglenum crudum Konow, was reared from Maechaerium acuminatum Kunth ( Fabaceae ) in ACG ( Smith and Janzen 2003a). Eriglenum occurs from Mexico to northern Argentina; see Smith (1992) for separation of the four species.

Distribution.

Known only from Costa Rica.

Food plant and biology.

Nine specimens from two broods were reared, with voucher codes 03-SRNP-11949, 03-SRNP-11951, 03-SRNP-11952, 03-SRNP-11953, 08-SRNP-70547, 08-SRNP-70548, 08-SRNP-70549 ( Fig. 16 ), 08-SRNP-70550, and 08-SRNP-70551. They were reared from larvae feeding on leaves of Machaerium seemannii Benth. Ex Seem. ( Fabaceae ). The tough, oval cocoon was formed on a leaf ( Fig. 18 ).

Figures

Figures 16 - 22. 16 Adult of Eriglenum tristum 17 Cocoon of Atomacera josefernandezi on leaf 18 Cocoon of Eriglenum tristum on leaf 19 cocoon of Scobina lepida 20 Larva of Scobina notaticollis 21, 22 Larvae of Waldheimia lucianocapellii.