Macrostomus ferrugineus (Fabricius)

Rafael, José Albertino & Cumming, Jeffrey M., 2009, Revision of the genus Macrostomus Wiedemann (Diptera: Empididae: Empidinae). I. The ferrugineus species-group, Zootaxa 2064 (1), pp. 39-56 : 46

Macrostomus ferrugineus (Fabricius)

( Fig. 8 )

Hybos ferrugineus Fabricius, 1805:146 . Macrostomus ferrugineus ; Wiedemann 1817: 59; Collin 1933: 210, fig. 45 (citation, male terminalia figured); Smith

1961: 55, figs. 5–6 (lectotype designation, redescription); Smith 1967: 30 (catalogued); Rafael & Cumming 2004:

441, figs. 1–10, 16–17 (redescription); Yang et al. 2007: 145 (catalogued). Rhamphomyia ferruginea ; Bezzi 1909: 321 (keyed).

Diagnosis. Predominantly yellow; postcranium black, upper third shining black without pruinescence; supraalar presutural setae absent; male tergite 8 acute distally. Female without pinnate scales on legs.

This is the type-species of Macrostomus . The lectotype is deposited at ZMC. This species was redescribed and figured by Rafael & Cumming (2004), based on recently collected Amazonian specimens .

Geographical records ( Fig. 8 ). Macrostomus ferrugineus occurs in Guyana and Brazil (Roraima, Amapá, Pará and Amazonas states). The only records south of the Amazon River are in the state of Pará in Belém and Alter do Chão ( Rafael & Cumming 2004) .

Discussion. Macrostomus ferrugineus appears close to M. fusciventris , n. sp., M. melanothorax , n. sp. and M. fuscithorax , n. sp. on the basis of male tergite 8 being acute distally. Macrostomus ferrugineus is the only known species in this species-group without supra-alar presutural setae. The female is similar to that of M. fulvithorax (Curran) , but has no pinnate scales on the hind tibia.

Figures

FIGURE 8. Distribution map of species belonging to the Macrostomus ferrugineus species-group with tergite 8 acute distally. Symbols represent the known collection localities as follows: solid circle = M. fuscithorax, n. sp.; square = M. fusciventris,, n. sp.; solid triangle = M. melanothorax, n. sp.; open circle = M. ferrugineus.