The first Neotropical and Afrotropical species of Microphorella Becker, with a key to the genera of Parathalassiinae and species of Microphorella from the Southern Hemisphere (Diptera: Dolichopodidae sensu lato).

Two new species of Microphorella Becker are described and illustrated from Chile and South Africa, respectively: M. amorimi sp. nov.

New Australasian Parathalassiinae (Diptera: Dolichopodidae sensu lato).

One species of Chimerothalassius Shamshev & Grootaert, namely C. marshalli sp. nov.

Establishment of the Microphorella breviradia species group, with a key to the Nearctic species groups of Microphorella Becker (Diptera: Dolichopodidae sensu lato: Parathalassiinae).

The Microphorella breviradia species group is established for three new species from western North America, namely Microphorella breviradia sp. nov., M.

Revision of the Nearctic Microphorinae (Diptera: Dolichopodidae sensu lato).

The Nearctic species of the dolichopodid subfamily Microphorinae are revised. Two genera and 33 species are recognized including five species of Microphor Macquart and 28 species of Schistostoma Becker. Both genera are redefined, redescribed and diagnosed, a key to the genera and species in the Nearctic Region is provided, the known geographical distribution of each species is mapped and ecological information is summarized.

Revision of the Empis (Enoplempis) mira species group (Diptera: Empididae).

The Empis (Enoplempis) mira species group is revised and includes the type species of Enoplempis and four new species (E. macdonaldi sp. nov.

A new species of Philetus Melander (Diptera: Empididae) from the Yukon Territory, Canada.

The Nearctic genus Philetus Melander, 1928 is a rarely collected group of empidid flies that contains two western species, namely P. memorandus Melander and P. schizophorus Melander.

Phylogenetic analysis and preliminary classification of the Parathalassiinae (Diptera: Empidoidea: Dolichopodidae sensu lato).

Phylogenetic relationships of the subgroups of Parathalassiinae are presented, based on a morphological cladistic analysis. Worldwide, all known extant genera, species groups and newly discovered undescribed lineages are represented in the analysis. Some previously proposed generic relationships are supported by the analysis, but recognition of many current genera renders the present concept of Microphorella Becker as both paraphyletic and polyphyletic.

Revision of the Holarctic genus Gloma Meigen (Diptera: Empidoidea: Brachystomatidae: Trichopezinae).

The Holarctic genus Gloma Meigen is revised and includes five species (G. fuscipennis Meigen, G. fuscipes Melander, G.

Remarkable new fossil species of Schistostoma Becker (Diptera: Dolichopodidae: Microphorinae) from mid-Cretaceous Burmese amber.

Two closely related and distinctive species of Schistostoma Becker, i.e. Schistostoma burmanicum sp.

Diversity of saproxylic dance flies and long-legged flies (Diptera: Empidoidea) in a temperate deciduous forest in Quebec, Canada.

A large diversity of saproxylic Empidoidea from a temperate deciduous forest in southern Quebec is documented. Adults of 43 empidoid species representing 19 genera in 12 subfamilies and three families were collected from in situ sealed emergence traps placed over decayed logs of American beech (Fagus grandifolia Ehrhart) and sugar maple (Acer saccharum Marshall). The results of this technique give a clear indication of the saproxylic larval and pupal habitat of these species.

New species and records of Cheiromyia Dyte from Brazil and French Guiana (Diptera: Dolichopodidae).

Cheiromyia carolina Limeira-de-Oliveira Brooks sp. nov. and C.

Comprehensive inventory of true flies (Diptera) at a tropical site.

Estimations of tropical insect diversity generally suffer from lack of known groups or faunas against which extrapolations can be made, and have seriously underestimated the diversity of some taxa. Here we report the intensive inventory of a four-hectare tropical cloud forest in Costa Rica for one year, which yielded 4332 species of Diptera, providing the first verifiable basis for diversity of a major group of insects at a single site in the tropics. In total 73 families were present, all of which were studied to the species level, providing potentially complete coverage of all families of the order likely to be present at the site.

New species of Chimerothalassius Shamshev Grootaert (Diptera: Dolichopodidae: Parathalassiinae) from the West Indies and Costa Rica.

Chimerothalassius runyoni sp. nov. is described from rocky coastlines of Montserrat and Dominica, and the genus is newly recorded from the Pacific coast of Costa Rica, based on female specimens of an undescribed species.

Remarkable fly (Diptera) diversity in a patch of Costa Rican cloud forest: Why inventory is a vital science.

Study of all flies (Diptera) collected for one year from a four-hectare (150 x 266 meter) patch of cloud forest at 1,600 meters above sea level at Zurquí de Moravia, San José Province, Costa Rica (hereafter referred to as Zurquí), revealed an astounding 4,332 species. This amounts to more than half the number of named species of flies for all of Central America. Specimens were collected with two Malaise traps running continuously and with a wide array of supplementary collecting methods for three days of each month.

, a new empidoid (Diptera) genus of uncertain placement.

A new minute-size empidoid fly genus, and two new species ( Cumming & Saigusa, , Sinclair & Brooks, ) are described, illustrated, and their distributions mapped. The family and subfamily assignments remain uncertain, but features of the female terminalia potentially suggest Trichopezinae (Brachystomatidae).

Neothalassius, a new genus of Parathalassiinae (Diptera: Dolichopodidae s.lat.) from the Pacific coast of South America.

A new genus, Neothalassius gen. nov., and two new species, Neothalassius triton sp.

Review of the little-known western Nearctic fly genus Philetus Melander (Diptera: Empididae), with a discussion of its phylogenetic assignment.

The western North American empidid genus Philetus Melander is reviewed, including redescription of the two included species, P. memorandus Melander and P. schizophorus Melander.

Phoomyia, a new genus of Dolichopodinae from the Oriental Region (Diptera: Dolichopodidae).

Phoomyia Naglis & Grootaert gen. nov. is described to include two new species of beach-dwelling dolichopodine flies from coastal Sri Lanka and Thailand: Phoontyia srilankensis Naglis & Brooks sp.

Revision of the Empis subgenus Enoplempis Bigot, east of the Rocky Mountains (Diptera: Empididae).

The Empis subgenus Enoplempis Bigot, east of the Rocky Mountains of North America is revised. A total of 19 species are recorded from this region including seven new species: E. (En.