Odontota scapularis (Olivier)

Eiseman, Charles S., Feldman, Tracy S. & Palmer, Michael W., 2024, New larval host records, parasitoid records, and DNA barcoding data for North American leaf-mining leaf beetles (Coleoptera: Chrysomeloidea), Zootaxa 5549 (1), pp. 1-60 : 30-31

Odontota scapularis (Olivier)

( Figs. 19 , 73–74 , 147 )

Reared specimens. MASSACHUSETTS, Hampden Co., Wales, 42.09014789, -72.20011674, 10.viii.2017, em. 23.viii.2017, C.S. Eiseman, ex Apios americana , # CSE4174 (1 adult, ZFMK); NORTH CAROLINA : Scotland Co., Laurinburg , St. Andrews University, 2.vi.2015, em. late vi.2015, T. S. Feldman, ex Apios americana , # CSE2231 (3 adults, ZFMK) .

Other collected mines. NORTH CAROLINA: Scotland Co., Laurinburg, St. Andrews University , 15.v.2015, T. S. Feldman, Apios americana .

Hosts. Fabaceae : Apios americana Medik. Adults have been reported from Desmodium Desv. , Gleditsia triacanthos L., and various non-fabaceous plants ( Ford & Cavey 1985; Clark et al. 2004), but there is no indication that any of these serve as larval hosts.

Biology. The eggs ( Fig. 19 ) and mine ( Figs. 73–74 ) were described and illustrated by Eiseman (2014), and our new observations are consistent with the previous ones. As with Odontota horni on other hosts, the mine is puffy and full-depth with frass in scattered, small, elongate particles. The mature larvae are typically found in a different leaflet from the egg cluster.

Parasitoids. An adult of Chrysocharis occidentalis (Girault) ( Eulophidae ) emerged from one of the mines collected on 15 May 2015 (CSE1599, BMNH). Eiseman (2014) observed a Closterocerus Westwood adult that had apparently just emerged from an egg of this beetle. Otherwise, an unspecified Sympiesis Fo ̈rster ( Eulophidae ) from an unspecified Odontota ( Thompson 1954) is the only previous parasitoid record for a member of this genus other than O. dorsalis ( Noyes 2020) .

Notes. Our Massachusetts specimen differs from the two barcoded North Carolina specimens by 0.62% and 0.92%, but by 2.15% from the only other member of BIN BOLD: ADF6942 , a specimen of O. scapularis collected in Virginia.

Figures

FIGURES 1–22. Eggs of Chalepini spp.; 1: Anisostena californica; 2: A. lecontii; 3: Baliosus californicus; 4: B. nervosus; 5: same; 6: Brachycoryna hardyi (photo by E. LoPresti); 7: B. pumila; 8: Chalepus bicolor; 9: C. walshii walshii; 10: Glyphuroplata pluto; 11: Microrhopala excavata excavata; 12: M. laetula; 13: M. vittata; 14: M. xerene; 15: Odontota dorsalis; 16: O. floridana; 17: O. horni (top view); 18: same (side view); 19: O. scapularis; 20: Sumitrosis ancoroides; 21: S. inaequalis; 22: S. rosea.

FIGURES 67–74. Leaf mines of Odontota spp.; 67: O. dorsalis on Amorpha fruticosa (upper surface in transmitted light); 68: same (lower surface in reflected light, with excrement-covered egg mass at lower right); 69: O. floridana on Tephrosia virginiana (leaflet almost completely mined out); 70: same (larva in newly established secondary mine); 71: O. horni on Desmodium illinoense; 72: lower surface of same mine, with three eggs visible (two along midrib and one at lower left); 73: O. scapularis on Apios americana; 74: lower surface of same mine, with excrement-covered egg mass at lower right.

FIGURES 142–161. Chrysomelidae adults; 142: Octotoma marginicollis; 143: O. plicatula; 144: Odontota dorsalis; 145: O. floridana; 146: O. horni; 147: O. scapularis; 148: Stenopodius cf. lateralis; 149: Sumitrosis ancoroides (reared from Stylosanthes biflora); 150: S. ancoroides (reared from Strophostyles helvola); 151: S. inaequalis; 152: S. pallescens; 153: S. rosea (reared from Hylodesmum glutinosum); 154: S. rosea (reared from Laportea canadensis); 155: S. rosea (another individual reared from same collection of L. canadensis leaves); 156: S. rosea (reared from Celastrus orbiculatus); 157: Oulema palustris; 158: Altica cf. lazulina; 159: Dibolia borealis; 160: D. chelones; 161: D. melampyri.