AGROMYZID LEAF MINERS — FRICK 437 



forward (fig. 169). The mesonotum is marked with dull black and 

 gvfiy pollinose and is without setulae other than about four on either 

 side anterior to the transverse suture (fig, 170). There are three 

 known specimens: the type from Wells, Nev., and tw^o specimens from 

 the San Jacinto Mountains, Calif. 



Host Plants of North American Agromyzid Larvae 



(Species of Agromyzidae in italic. Plant names in parentheses are known larval 

 hosts in Europe; to date no such host plant, or not more than one, has been 

 reported in North America for each of the species of Agromyzidae so indicated.) 



Pteridophyta 



Polypodiaceae 



Asplenium pinnatifidum Nutt.: Liriomyza felti (Malloch) 

 (Asplenium rutamuraria L.): Liriomyza lutea (Meigen) 

 Camptosorus rhizophyllus (L.) Link: Liriomyza felti (Malloch) 

 Pteridum aquilinum (L.) Kuhn: Phytobia (Praspedomyza) clara 

 (Melander) 

 Spermatophyta 

 Angiospermae 



Monocot3dedoneae 

 Typhaceae 



Typha spp.: Phytobia (Dizygomyza) thompsoni Friek 

 (Typha latifolia L.): Phytobia {Dizygomyza) iraeos (Robineau-Desvoidy) 

 Gramineae 

 Festuceae 



Bromus carinatus Hook. & Arn.: Cerodontha (Cerodontha) dorsalis 



(Loew), Liriomyza flaveola (Fallen) 

 Bromus tectorum L.: Phytobia (Poemyza) incisa (Meigen), Phytomyza 



nigra Meigen 

 Dactylis glomerata L.: Cerodontha {Cerodontha) dorsalis (Loew) 

 Eragrostis sp.: Cerodontha {Cerodontha) dorsalis (Loew) 

 Festuca aruudinacea Schreb.: Phytomyza nigra Meigen 

 Festuca rubra var. commutata Gaud.: Phytomyza nigra Meigen 

 Poa pratensis L.: Cerodontha {Cerodontha) dorsalis (Loew) 

 Hordeae 



Agropyron repeus (L.) Beauv.: Agromyza niveipennis Zetterstedt, 

 Phytobia {Poemyza) incisa (Meigen), P. (P.) muscina (Meigen), 

 Cerodontha {Cerodontha) dorsalis (Loew), Pseudonapomyza air a 

 (Meigen) 

 Agropyron sp.: Phytobia {Poemyza) inconspicua (Malloch) 

 Elymus canadensis L.: Phytobia {Poemyza) lateralis (Macquart) 

 E. glaucus Buckl.: Phytobia {Poemyza) incisa (Meigen), Cerodontha 



{Cerodontha) dorsalis {Loeiv) 



Hordeum jubatum L.: Agromyza niveipennis Zetterstedt, Phytobia 



{Poemyza) lateralis (Macquart), Cerodontha {Cerodontha) dorsalis 



(Loew), Pseudonapomyza atra (Meigen), Phytomyza nigra Meigen 



H. murinum L.: Phytobia {Poemyza) muscina (Meigen), Cerodontha 



{Cerodontha) dorsalis (Loew), Liriomyza flaveola (Fallen) 

 H. vulgare L.: Phytobia {Poemyza) incisa (Meigen), Cerodontha 

 {Cerodontha) dorsalis (Loew) 



