Cyclorrhapha

Figure 52.Distribution of Planinasus xanthops sp. n. (dot) and Planinasus obscuripennis sp. n. (square).

Figures 251–259.251–252 Oligeriops iridomyrmex female (syntype): 251 head frontal 252 head lateral 253 Oligeriops dimorphon male (Australia, coll. USNM), genitalia lateral 254–255 Omegasyrphus pallipennis male (USA, California, coll. RMNH) 254 habitus dorsal 255 habitus lateral 256 Omegasyrphus coarctatus male (USA, Virginia, coll. RMNH), genitalia lateral. 257–258 Paragodon paragoides female (Costa Rica, coll. RMNH): 257 habitus lateral 258 wing.

Figures 124–126.Hydrochasma urnulum sp. n. (Dominican Republic. LaVega: Jarabacoa) 124 head, anterior view 125 same, lateral view 126 same, oblique view. Scale bar = 0.1 mm.

Figure 8.Postgonite, lateral view. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.

Figure 85.Distribution of Allotrichoma baliops sp. n.

Figures 259–268.259–260 Paragodon paragoides female (Costa Rica, coll. RMNH) 259 head frontal 260 head lateral 261 Paragodon paragoides male (Panama, coll. SEMC), genitalia lateral. 262 Paramicrodon flukei male (holotype), habitus dorsal. Photo: American Museum of Natural History 263–266 Paramicrodon toxopei male (holotype): 263 habitus dorsal 264 habitus lateral 265 head frontal 266 head lateral 267–268 Paramicrodon, male genitalia: 267 Paramicrodon cf. flukei (Peru, coll. RMNH) 268 Microdon toxopei (holotype).

Figures 154–156.Hydrochasma capsum sp. n. (Puerto Rico. Maricao) 154 head, anterior view 155 same, lateral view 156 same, oblique view. Scale bar = 0.1 mm.

Figure 9.Postgonite, ventral view. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.

Figures 86–89.Illustration of Allotrichoma insulare sp. n. (male) 86 epandrium, cerci, surstylus, posterior aspect 87 same, lateral aspect 88 aedeagus, phallapodeme, gonite, hypandrium, ventral aspect 89 same, lateral aspect. Scale bar = 0.1 mm.

Figures 259–268.259–260 Paragodon paragoides female (Costa Rica, coll. RMNH) 259 head frontal 260 head lateral 261 Paragodon paragoides male (Panama, coll. SEMC), genitalia lateral. 262 Paramicrodon flukei male (holotype), habitus dorsal. Photo: American Museum of Natural History 263–266 Paramicrodon toxopei male (holotype): 263 habitus dorsal 264 habitus lateral 265 head frontal 266 head lateral 267–268 Paramicrodon, male genitalia: 267 Paramicrodon cf. flukei (Peru, coll. RMNH) 268 Microdon toxopei (holotype).

Figures 172–174.Hydrochasma leucoproctum (Loew) (St. Vincent. St. Patrick: Cumberland Bay) 172 head, anterior view 173 same, lateral view 174 same, oblique view. Scale bar = 0.1 mm.

Figure 10.Hypandrium, lateral view. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.

Figure 90.Distribution of Allotrichoma insulare sp. n.

Figures 269–278.269–270 Paramixogaster acantholepidis male (holotype): 269 habitus dorsal 270 habitus lateral 271 Paramixogaster luxor male (holotype), habitus dorsal 272–275 Paramixogaster piptotus female (holotype): 272 habitus dorsal 273 head frontal 274 thorax dorsal 275 habitus lateral 276–277 Paramixogaster, habitus dorsal: 276 Paramixogaster omeanus male (holotype) 277 Paramixogaster vespiformis female (syntype).

Figures 11–12.11 Hydrochasma williamsae sp. n. (USA. New Mexico. Grant: Mimbres River) hindtibia and hindtarsus, posterior view 12 Hydrochasma digitatum sp. n. (Peru. Madre de Dios: Río Manu, Erika), abdomen of male, dorsal view. Scale bar = 0.1 mm.

Figure 11.Hypandrium, ventral view, shape of postgonites A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.

Figures 1–2. Nocticanace packhamorum 1 epandrium, posterior view 2 same, left lateral view.

Figures 278–284.278–279 Paramixogaster vespiformis female (syntype): 278 habitus lateral 279 head frontal 280–284 Paramixogaster, male genitalia: 280 Paramixogaster acantholepidis (holotype) 281 Paramixogaster illucens (holotype) 282 Paramixogaster luxor (holotype) 283 Paramixogaster omeanus (Australia, coll. USNM) 284 Paramixogaster cf. vespiformis (Vietnam, coll. RMNH).

Figures 70–71.Abdomens of females, dorsal view. 70 Hydrochasma spinosum sp. n. (Costa Rica. Puntarenas: Dominical) 71 Hydrochasma denticum sp. n. (Ecuador. Orellana: Río Tiputini). Scale bar = 0.1 mm.

Figure 12.Shape of female sterna 2–4. A Melanostoma scalare, B and C Melanostoma certum D Melanostoma mellarium and E and F Melanostoma mellinum.

Figures 3–6. Nocticanace austra 3 head, anterior view 4 same, lateral view 5 epandrium, posterior view 6 same, left lateral view.

Figures 285–292.285–289 Parocyptamus sonamii male (syntype, except 290 Thailand, coll. RMNH): 285 habitus dorsal 286 habitus lateral 287 tergite 2 dorsal 288 head frontal 289 wing 290 Parocyptamus stenogaster male (holotype), genitalia lateral 291–292 Peradon bidens male (Surinam, coll. RMNH): 291 face frontal 292 head lateral.

Figures 115–118.Hydrochasma peniculum sp. n. (Cuba. Cienfuegos, Jardin Botánico) 115 epandrium and cerci, posterior view 116 same, lateral view 117 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 118 same, lateral view. Scale bar = 0.1 mm.

Figure 8.Silbomyia hoeneana Enderlein, ♂. A dorsal view B lateral view.