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There are four previously described species of the genus Echinohelea Kieffer in the Western Hemisphere. The following species are described as NEW SPECIES: aitkeni from Brazil, blantoni and panamensis from Panama, jamaicensis from Jamaica, and leei and neotropica from Colombia. Echinoideshelea NEW SUBGENUS is described with E. aitkeni n. sp. as type-species. The hitherto unknown pupal stage of the genus is described fro E. lanei Wirth, which was reared from a pond margin in New York, USA. Diagnoses are presented for the genus Echinohelea and the subgenus Echinoideshelea, a key is given for the identification of the 11 species, descriptions or diagnoses are given for all species, and diagnostic characters of the male genitalia are illustrated.
Atrichopogon Kiefer, subgenus Rostropogon Remm, is a junior synonym of the subgenus Lophomyidium Cordero (NEW STATUS, NEW SYNONYMY). Monohela ocumare Ortiz from Venezuela is transferred to Atricopogon (Lophomyidium) (NEW COMBINATION). The Holarctic species Atrichopogon polydactylus Nielsen is a junior synonym of A. fusculus (Coquillet), a widespread and common species previously reported from only the Western Hemisphere. Four Nearctic species are described as NEW SPECIES: A. jamnbacki from salt and brackish marshes along the Atlantic coast from Nova Scotia to North Carolina; the following freshwater species A. deyrupi from southern Florida; A archboldi, from southern Florida, Texas and California, and southward well into the Neotropical Region and A. borkenti, from western Canada. The larvae of A. (Lophomyidium) are found on wet wood, soil, and stones in marshy habitats. Adults of A. fusculus have been observed feeding on insect carrion in spider webs.
The annulatipes group of the genus Forcipomyia Meigen, subgenus Lepidohelea Kieffer, is represented in the Western Hemisphere by 12 species. Keys are presented for their identification, and to distinguish them from other groups of the subgenus Lepidohelea. The three previously known species, annulatipes Macfie, brasiliensis Macfie, and kuanoskeles Macfie, from southern Brazil, as well as the following nine new species, are described and illustrated: bahiensis, basifemoralis, bifida, convexipenis, euthystyla, gravesi, herediae, hobbsi, and weemsi.
The dentifemur and venustula groups of the subgenus Homobezzia Macfie, genus Bezzia Kieffer, are represented in the Neotropical Region by 12 species. A key is presented for their identification, and to distinguish them from other groups of the subgenus Homobezzia. The two previously known species, B. venustula (Williston) and B. snowi Lane, are described and illustrated, as well as the following ten new species: aitkeni, bromeliae, cayoensis, dentifemur, filiductus, fusca, mexicana, nigritibialis, pseudovenustula, and raposoensis. Bezzia concoloripes Made is regarded as a junior synonym of B. venustula (Williston).
The gibbera Group of the genus Bezzia Kieffer, subgenus Bezzia, is comprised in the Neotropical Region of at least 16 species, of which the following 11 species are described as new: araucana from Argentina; catarinensis from Brazil; globulosa from Puerto Rico; grogani from Colombia, Mexico and Panama; hondurensis from Mexico and Central America; jubata, leei and megatheca from Colombia; mesotibialis from Belize and Trinidad; pseudogibbera from Honduras and Panama; and setigera from Colombia and El Salvador. A key is presented for subgenera and species groups, and for the Neotropical species of the gibbera Group.
Examination of two large collections of Ceratopogonidae from Rondonia, Brazil, and Loreto, Peru, resulted in records of 15 species in the tribes Palpomyiini and Stenoxenini, including three previously undescribed: Bezzia schmitzorum Dippolito & Spinelli, Palpomyia pseudolacustris D. & S., and Stenoxenus aductus D. & S. from Rondonia. The hitherto unknown male of Palpomyia versicolor Macfie is described and figured.
Examination of a large collection of Ceratopogonidae from Rondonia, Brazil, resulted in records of 11 species in the tribes Heteromyiini and Sphaeromiini, including the NEW GENUS Groganhelea Spinelli & Dippolito NEWGENUS, which is described herein, with its type-species G. rondoniensis Spinelli & Dippolito, NEW SPECIES. Heteromyia correntina Lane & Duret and Mallochohelea termophila (Spinelli) are recorded for the first time from Brazil.