Monoxia sp. 1

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 : 47

Monoxia sp. 1

( Figs. 111–112 , 168 )

Collected specimens. CALIFORNIA: Imperial Co., Ocotillo, Shell Canyon Rd. , 7.iii.2017, C.S. Eiseman, on Atriplex hymenelytra , # CSE3170 (9 adults, MLBM) .

Host. Amaranthaceae : Atriplex hymenelytra (Torr.) S.Watson.

Biology. These specimens included mating pairs and were found in association with Monoxia leaf mines, some of which contained larvae, but unfortunately none were reared. The mines were irregular, full-depth blotches with frass in a few small clumps ( Figs. 111–112 ). The entrance and exit holes were on the upper leaf surface as noted for other Monoxia species.

Notes. As noted under M. elegans , nine species of Monoxia and Yingabruxia have been associated with Atriplex , but this is the first record from A. hymenelytra specifically. According to S.M. Clark (in litt.), our beetles might be M. puberula Blake , but there are several extremely similar species and identification is difficult. Adults of M. puberula have been associated primarily with species of Gutierrezia Lag. ( Asteraceae ) ( Blake 1939; Clark et al. 2004), but the only larval host record we have seen is that of Santiago-Blay (2004) from Atriplex confertifolia (Torr. & Frém.) S.Watson , so this tentative identification seems entirely plausible.

Figures

FIGURES 107–117. Leaf mines and larvae of Monoxia spp.; 107: M. elegans on Atriplex canescens; 108: same (transmitted light); 109: M. inornata on Grindelia squarrosa; 110: same; 111: Monoxia sp. 1 on Atriplex hymenelytra (vacated); 112: same (with larva); 113: Monoxia sp. 2 on Eurybia glauca; 114: same mine in transmitted light, showing larva at lower left; 115: externally feeding larva of Monoxia sp. 2 on Eurybia glauca; 116: Monoxia sp. 3 on Isocoma acradenia; 117: same (transmitted light).

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.