Cerodontha (Cerodontha) dorsalis (Loew)

Eiseman, Charles S. & Lonsdale, Owen, 2018, New state and host records for Agromyzidae (Diptera) in the United States, with the description of thirty new species, Zootaxa 4479 (1), pp. 1-156 : 41

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).

Figures

FIGURES 124–132. leaf mines; 124: Cerodontha (Butomomyza) angulata (Loew) in Dichanthelium clandestinum (puparium on leaf surface at lower left); 125: C. (B.) angulata in Carex sp.; 126: C. (C.) dorsalis (Loew) in Triticosecale sp.; 127: C. (Dizygomyza) edithae spec. nov. in Iris versicolor (puparium at left); 128: C. (D.) feldmani spec. nov. in Carex flaccosperma (puparium at far left; other dark spot is a dead larva); 129: C. (D.) cf. iraeos (Robineau-Desvoidy) in Iris cristata (brown puparium to right of black frass spot); 130: C. (D.) morosa (Meigen) in Carex leptonervia (puparium at right); 131: C. (Poemyza) incisa (Meigen) in Cinna arundinacea (transmitted light, with two puparia); 132: C. (P.) inconspicua (Malloch) in Elymus virginicus (transmitted light, with two puparia).