Haplopeodes Steyskal, 1980

Lonsdale, Owen, 2021, Manual of North American Agromyzidae (Diptera, Schizophora), with revision of the fauna of the " Delmarva " states, ZooKeys 1051, pp. 1-481 : 1

Haplopeodes Steyskal

Haplopeodes Steyskal, 1980: 141. Type species: Phytomyza minuta Frost 1924: 86, by original designation. Spencer and Steyskal 1986b: 138.

Haplomyza . Lapsus. Spencer 1987: 878.

When Antineura togata Melander, the type species for Haplomyza , was moved to Liriomyza , the remaining species placed in Haplomyza were left orphaned. The name Haplopeodes was provided by Steyskal (1980) to encompass these orphaned taxa, which were found to represent a natural group. The genus occurs throughout the New World on Amaranthaceae , Chenopodiaceae , Portulacaceae and Solanaceae , producing short, irregular, and somewhat straight mines ( Steyskal 1980; Spencer and Steyskal 1986b). One species occurs in Africa ( Spencer 1961), but this was likely misplaced to genus. Steyskal (1980) last revised the genus, and Spencer and Steyskal (1986b) last treated the fauna of the United States. A single new species was described from California in Eiseman et al. (2021).

Morphologically, Haplopeodes species are very similar to Liriomyza , but they exhibit a strong reduction or simplification of both external and genitalic features, likely due in no small part to their minute body size. There is no stridulating mechanism, only one ors, dm-m is lost, the phallus is simplified and largely membranous, and the ejaculatory apodeme is narrow with little pigment on the sperm pump. Similar to many Liriomyza , the posterodistal margin of the epandrium has a single tubercle-like seta and the surstylus is small with few apical tubercles, but the ejaculatory duct is not pigmented and does not appear to be much swollen apically.