Monoxia angularis (LeConte)

Eiseman, Charles S., 2014, New Host Records and Other Notes on North American Leaf-Mining Chrysomelidae (Coleoptera), The Coleopterists Bulletin 68 (3), pp. 351-359 : 358

Monoxia angularis (LeConte)

I have found no descriptions of leaf mines for any Monoxia species , beyond the statement that those of Asteraceae-feeding larvae are “consistently simple, often inflated and sacculate, and about 1 cm long at completion” (Santiago-Blay 2004). To this I can add my observations of Atriplex prostrata Bouchér ex DC. (Amaranthaceae) leaves mined by M. angularis , which were collected in Lake County, California on 5 June 2013 (adult specimens in MLBM). I examined eight mined leaves, two of which included more than one mine. These were all full-depth blotches that contacted the leaf edge, each occupying little more than 1 cm 2; the largest measured 17 mm by 7 mm. Larvae were able to exit and establish new mines. The frass was elongate pellets, but rather than being scattered through the mine, these were mostly grouped in clumps or a solid central mass, with the bulk of the mine left clean and transparent ( Fig. 17 ). Pupation was outside the mines, in contrast to Santiago-Blay’ s (2004) observations of other Monoxia species.

Figures

Figs. 13–17. 13) Young Sumitrosis inaequalis larva mining in white wood aster (Eurybia divaricata) leaf; egg at upper right; 14) Mine of Sumitrosis rosea in leaf of Oriental bittersweet (Celastrus orbiculatus); 15) Detail of presumed Dibolia chelones mine in leaf of white turtlehead (Chelone glabra), showing squiggly strings of frass; 16) Leaf of climbing false buckwheat (Fallopia scandens) mined by four Mantura floridana larvae; 17) Mines of Monoxia angularis in Atriplex prostrata leaf.