Phyllotreta liebecki Schaeffer

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 : 43-44

Phyllotreta liebecki Schaeffer

( Figs. 99–100 , 105 , 164 )

Reared specimens. MASSACHUSETTS: Hampden Co., Holland, 42.032214, -72.176878, 15.ix.2023, em. 4– 27.x.2023, C.S. Eiseman, ex Cardamine impatiens , # CSE8522 (13 adults, MLBM) ; NORTH CAROLINA : Wake Co. , Morrisville, Lake Crabtree County Park, 4.vi.2018, em. 16.vi.2018, T . S. Feldman , ex Cardamine pensylvanica , # CSE4950 (2 adults, MLBM) ; same collection, em. after 16.vi.2018, # CSE4950 b (2 adults, MLBM) .

Hosts. Brassicaceae : * Cardamine impatiens L., C. pensylvanica Muhl. ex Willd. , Lepidium virginicum L., Planodes virginicum (L.) Greene, Rorippa teres (Michx.) Stuckey , “mustard plants” (likely = Brassica L.) ( Chittenden 1923; Smith 1985). Adults have been collected on Brassica rapa L. (as “Chinese cabbage or pe-tsai” and “turnip”) and Raphanus raphanistrum subsp. sativus (L.) Domin (as “radish”) ( Chittenden 1923; Smith 1985).

Biology. Larvae form irregular, full-depth, linear leaf mines, sometimes forming secondary blotches ( Figs. 99–100 ). Frass is deposited in elongate pellets that tend to form a broken, more or less central line. The single larva that was photographed outside its mine had a pattern of dark, sclerotized areas matching that of P. chalybeipennis (Crotch) ( Eiseman 2015) , but the ground color was whitish with only small, faint yellow patches ( Fig. 105 ).

Figures

FIGURES 99–102. Leaf mines of Phyllotreta spp.; 99: P. liebecki on Cardamine impatiens; 100: same; 101: Phyllotreta sp. 1 on Lepidium oblongum; 102: Phyllotreta sp. 2 on Lepidium virginicum.

FIGURES 103–106. Larvae of Alticini spp.; 103: late instar of Altica cf. lazulina, feeding externally on Camissoniopsis cheiranthifolia; 104: Dibolia cf. obscura; 105: Phyllotreta liebecki; 106: Phyllotreta sp. 2.

FIGURES 162–173. Chrysomeloidea adults; 162: Dibolia cf. obscura; 163: Mantura floridana; 164: Phyllotreta liebecki; 165: Phyllotreta sp. 2; 166: Monoxia elegans; 167: M. inornata; 168: Monoxia sp. 1; 169: Monoxia sp. 2; 170: Monoxia sp. 3; 171: Yingabruxia brisleyi; 172: Zeugophora puberula; 173: Z. varians.