AGROMYZID LEAF MINERS — FRICK 403 



cruciferous plants and Tropaeolum sp. (nasturtium). I have seen 

 specimens from many of the States throughout the United States and 

 from Manitoba in Canada. Liriomyza brassicae is also a well known 

 species in Europe. 



Liriomyza chlamydata (Melander) 



Antineura chlamydata Melander, Journ. New York Ent. Soc, vol. 21, p. 250, 1913. 

 This species belongs to the group without a prescutellar yellow spot 

 on the mesonotum and with the third antennal segment partially 

 dark. This species may be separated from the other three with a 

 darkened third antennal segment by the lack of crossvein m-m. How- 

 ever, crossvein m-m is sometimes absent in Liriomyza langei, and L. 

 chlamydata may be confused with those specimens of L. langei that 

 lack the m-m crossvein. L. chlamydata may be separated by the 

 setulae of the third antennal segment being as long as the basal di- 

 ameter of the arista, six or seven very strong orbital setulae that are 

 about one-fourth as long as the orbital setae, the humeral seta on 

 black, and the black mesepimeron. The holotype and only known 

 specimen is from the State of Washington. 



Liriomyza commelinae (Frosr) 



Agromyza commelinae Frost, Ent. Nev?s, vol. 42, pi 72, 1931. 

 Liriomyza commelinae (Frost), Silva and Oliveira, Rev. Brasil. Biol., vol. 12, p. 

 293, 1952 (figures of adult and larval characters and leaf mines). 



The holotype male is in the U. S. National Museum (No. 62960). 

 This species has the third antennal segment of the male greatly en- 

 larged and the gena about one-third as wide as the eye height (fig. 

 102). The mesonotum is broadly yellow posteriorly but lacks a cen- 

 tral rectangular or triangular area extending anteriorly of the fourth 

 dorsocentral (fig. 103) . The larvae form serpentine mines in the leaves 

 of Commelina elegans H. B. K., C. longicaulis Jacq., and C. virginica L. 

 I have seen specimens from St. Vincent and Trinidad in the British 

 West Indies. This species is known from Brazil and apparently was 

 redescribed by Blanchard (1954) as L. bahamondesi, from Commelina 

 virginica L. in Argentina. 



Liriomyza deceptiva (Malloch) 



Agromyza deceptiva Malloch, Canadian Ent., vol. 50, p. 78, 1918. 



Liriomyza deceptiva is the most diverse North American species of 

 Liriomyza known to me. The head is unique in having the genoverti- 

 cal plates broadened immediately above the antennae (fig. 104). In 

 profile the head has the genovertical plates strongly extending beyond 

 the eye margin (fig. 105). The pleura and abdomen are all black. 

 There are two females that represent this species, one from Illinois 

 and one from Virginia. 



