Liriomyza commelinae (Frost, 1931)

Agromyza commelinae Frost, 1931: 72 .

Liriomyza commelinae, Frick, 1952: 402; 1959: 403; Spencer, 1963: 361; Stegmaier, 1966a: 147; Spencer & Stegmaier, 1973: 101.

Diagnosis. Wing length 1.6–1.8 mm. Head and face yellow; first flagellomere yellow, somewhat brownish, greatly enlarged in male; mesonotum predominantly black, with spot almost reaching scutellum; scutellum yellow with one pair of brown lateral spots; calypter greyish, fringe black. Aedeagus (Fig. 256 and 257 in Spencer & Stegmaier 1973): basiphallus slightly sclerotized with membranous extension distally; mesophallus and distiphallus fused, with two shorts, diverging apical tubules and broad lateral plate-like extensions.

Host-plants. Commelinaceae— Commelina diffusa Burm. f., Commelina elegans Kunth., Murdannia nudiflora (L.) Brenan, Tradescantia fluminensis Vell.

Distribution. Argentina, Barbados, Brazil, Colombia, Costa Rica, Cuba, Guadeloupe, Jamaica, Peru, Saint- Martin, Saint-Vicent, USA, Venezuela.

Material examined. BRAZIL, Pará state, Belém: Jardim Botânico Bosque Rodrigues Alves, 1º25′48.2″S, 48º27′23.5″W, 25-IX-1992, M.C. Esposito [collector], ex leaf of Murdannia nudiflora (6 ♂) ; same location, 25- IX-1992, M.C. Esposito [collector], ex leaf of Murdannia nudiflora (5 ♀) ; Museu Emilio Goeldi, 1º27′12.4″S, 48º28′35.3″W; 04-IX-1992, M.C. Esposito [collector], ex leaf of Murdannia nudiflora (♀) ; Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), 1º26′10.4″S, 48º26′57.2″W, 02-XII-1992, M.C. Esposito [collector], ex leaf of Murdannia nudiflora (♂) ; same location, 08-I-1993, M.C. Esposito [collector], ex leaf of Murdannia nudiflora (2 ♂) ; same location, 25-II-1994, M.C. Esposito [collector], ex leaf of Murdannia nudiflora (♀) ; same location, 25-I- 1994, M.C. Esposito [collector], ex leaf of Murdannia nudiflora (2 ♀) .

Comments. This species can be easily differentiated from the other Liriomyza species by the greatly enlarged male first flagellomere.