Cerodontha (Cerodontha) dorsalis (Loew)

(Fig. 126)

Material examined. COLORADO: Chaffee Co., Poncha Springs, South Arkansas River, 8.vii.2015, em. by 21.vii.2015, C.S. Eiseman, ex × Triticosecale, #CSE1777, CNC634812 (1♀) ; CONNECTICUT: Litchfield Co., Canaan, Falls Village, 21.vii.2015, em . 27.vii.2015, C. Vispo, ex Elymus, #CSE2170, CNC564678 (1♂); NORTH CAROLINA: Durham Co., Durham, Pelham Rd., 29.iv.2017, em. ~ 17–22.v.2017, T.S. Feldman, ex Dichanthelium, #CSE3675, CNC939801–93980 2 (2♀) ; 29.iv.2017, em. ~ 17.v.2017, T.S. Feldman, ex Elymus virginicus, #CSE3676, CNC939821 (1♀); 13.v.2017, em. 19.v.2017, T.S. Feldman, ex Dichanthelium dichotomum ssp. nitidum, #CSE3693, CNC939803 (1♀); Scotland Co., Laurinburg, St. Andrews University, 18.iv.2017, em . 18.v.2017, T.S. Feldman, ex Agrostis hyemalis, #CSE3685, CNC939750 (1♂).

Hosts. Poaceae: * Agrostis hyemalis (Walter) Britton, Sterns & Poggenb., Avena sativa L., Bromus carinatus Hook. & Arn., Dactylis glomerata L., * Dichanthelium dichotomum (L.) Gould, Digitaria sanguinalis (L.) Scop., Echinochloa crus-galli (L.) P. Beauv., Ehrharta erecta Lam., Eleusine indica (L.) Gaertn., Elymus glaucus Buckley, E. repens (L.) Gould, E. * virginicus L., Eragrostis von Wolf, Hordeum jubatum L., H. murinum L., H. vulgare L., Lolium perenne L. ssp. multiflorum (Lam.) Husnot, Panicum capillare L., P. dichotomiflorum Michx., P. miliaceum L., Phalaris minor Retz., Phleum pratense L., Poa pratensis L., Secale cereale L., Setaria viridis (L.) P. Beauv., Sorghum bicolor (L.) Moench, * × Triticosecale Wittm. ex A. Camus, Triticum aestivum L., Zea mays L. (Frick 1959; Spencer & Steyskal 1986).

Leaf mine. (Fig. 126) Long, narrow, whitish, leading from near the tip of the leaf into the sheath. In the mines on Dichanthelium and × Triticosecale, several branches emanated from the sheath.

Puparium. Shining, yellowish brown, somewhat flattened (Spencer & Steyskal 1986); whitish in the example we examined.

Distribution. Widespread in the New World, including the Caribbean, Central America, and South America; also recorded from Mongolia, East Siberia, and Middle Asia (Boucher 2002).