Macrostomus ferrugineus
Creators: name: Rafael, José Albertino
name: Cumming, Jeffrey M.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Empididae
Macrostomus
Macrostomus ferrugineus

description: Key to species of the M. ferrugineus species-group   
1. Thorax entirely black.................................................................................................................................................. 8  
– Thorax predominantly yellow..................................................................................................................................... 2  
 2. Abdomen entirely black; one pair of scutellar setae; male and female terminalia as in Fig. 2 ... M. fusciventris, n. sp.   
– Abdomen yellow or yellowish red; usually two pairs of scutellar setae...................................................................... 3  
3. Postcranium yellow ventrally...................................................................................................................................... 4  
– Postcranium entirely black.......................................................................................................................................... 5  
 4. First hind tarsomere with two slender setae dorsally; male and female wings elongated (Figs. 4a,f); female wing entirely brown infuscated, sinuose along anal margin (Fig. 4f); male terminalia with elongate distally bifid anterior cercus and posterior cercus with simple incurved protuberance (Figs. 4c,d); female hind tibia without pinnate scales ..................................................................................................................................................... M. longipennis, n. sp.   
 – First hind tarsomere with seven slender setae dorsally; male wing not so elongated, almost entirely hyaline; male terminalia as in figures 20–22 of Rafael & Cumming (2006), with anterior cercus stouter and posterior cercus without incurved protuberance; female unknown.............................................................. M. occidentalis Rafael & Cumming   
5. Postcranium shining black with no pruinescence on upper third................................................................................ 6  
– Postcranium black but entirely gray pruinose............................................................................................................... 7  
 6. Male tergite 8 acute distally (Rafael & Cumming 2004, fig. 5); male frons very narrow, about one third anterior ocellus width; supra-alar presutural setae absent; first hind tarsomere with 1–3 slender setae; female hind tibia without pinnate scales................................................................................................................ M. ferrugineus (Fabricius)   
 – Male tergite 8 with distal protuberance truncated (Rafael 2001, fig. 3); male frons wider, about one half to three quarters anterior ocellus width; one pair of supra-alar presutural setae present; first hind tarsomere with 4–5 slender setae; female hind tibia with pinnate scales on dorsal and ventral surfaces (Rafael 2001, fig. 4)................................................................................................................................................................................... M. fulvithorax (Curran)   
 7. Male tergite 8 forked distally (Fig. 5b); female hind tibia with pinnate scales on dorsal surface as well as basal third ventrally............................................................................................................................................ M. furcatus, n. sp.   
 – Male tergite 8 with apex truncated, not forked (Fig. 6b); female hind tibia with pinnate scales only on dorsal surface (Fig. 6f)................................................................................................................................................ M. flavus, n. sp.   
 8. CuA 1 vein shorter than dm-cu vein (Fig. 1a); hypandrium with distal protuberance rounded and relatively wide (Fig. 1e) ................................................................................................................................................ M. fuscithorax, n. sp.   
 – CuA 1 vein longer than dm-cu vein (Fig. 3a); hypandrium with distal protuberance acute (Fig. 3d)............................................................................................................................................................................. M. melanothorax, n. sp.   
 Species belonging to the M. ferrugineus species-group fall into two distinct subgroups based on the distal shape of tergite 8 in the male. The first four species have tergite 8 acute distally.
description: Published as part of Rafael, José Albertino & Cumming, Jeffrey M., 2009, Revision of the genus Macrostomus Wiedemann (Diptera: Empididae: Empidinae). I. The ferrugineus species-group, pp. 39-56 in Zootaxa 2064 (1) on pages 40-41, DOI: 10.11646/zootaxa.2064.1.4, http://zenodo.org/record/5321572