Cyclorrhapha

Figure 5.Shape of male sterna 2–4. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.

Figure 4.Antenna. A Melanostoma scalare, male and B Melanostoma certum, male.

Figure 56.Distribution of Allotrichoma sabroskyi sp. n.

Figure 90.Distribution of Planinasus nigrifacies sp. n.

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 184–185.Abdomens of males, dorsal view. 184 Hydrochasma capsum sp. n. (Cuba. Sancti Spiritus: Topes de Collantes) 185 Hydrochasma leucoproctum (Loew) (St. Vincent: Cumberland Bay). Scale bar = 0.1 mm.

Figure 14.Abdomen of female. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium D Melanostoma mellinum.

Figure 14.Abdomen of female. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium D Melanostoma mellinum.

Figures 69–73.Illustration of Allotrichoma wallowa sp. n. (male) 69 epandrium, cerci, surstylus, posterior aspect 70 male 5th sternal flap and medial process, lateral aspect 71 aedeagus, phallapodeme, gonite, hypandrium, ventral aspect 72 same, lateral aspect 73 epandrium, cerci, surstylus, lateral aspect. Scale bar = 0.1 mm.

Figures 30–33.Illustrations of Planinasus miradorus sp. n. (male). 30 epandrium, surstylus, , lateral view 31 epandrium, hypandrium, and internal structures of male terminalia, ventral view 32 ejaculatory apodeme, lateral view 33 internal structures of male terminalia, lateral view. Scale bar = 0.1 mm.

Figures 245–250.245–246 Mixogaster breviventris male (USA, coll. RMNH), genitalia: 245 lateral 246 ventral. Figure 247. Mixogaster thecla male (Brazil, coll. J.T. Smit), genitalia lateral 248 Mixogaster spec. nov. male (Colombia, coll. RMNH), aedeagus ventral 249–250 Oligeriops dimorphon female (Australia, coll. BMNH): 249 habitus dorsal 250 habitus lateral.

Figures 36–38.Hydrochasma sinuatum sp. n. (Honduras. Cortés: Omoa) 36 head, anterior view 37 same, lateral view 38 same, oblique view. Scale bar = 0.1 mm.

Figure 5.Shape of male sterna 2–4. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.

Figure 74.Distribution of Allotrichoma wallowa sp. n.

Figure 34.Distribution of Planinasus miradorus sp. n. (square) and Planinasus atriclypeus (dots).

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 49–51.Hydrochasma viridum sp. n. (Guyana. Moco-Moco, Lethem) 49 head, anterior view 50 same, lateral view 51 same, oblique view. Scale bar = 0.1 mm.

Figure 6.Cerci and surstyli, dorsal view and surstyli, lateral view. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.

Figure 80.Habitus of Allotrichoma baliops sp. n.

Figures 48–51.Illustrations of Planinasus xanthops sp. n. (male). 48 epandrium, surstylus, lateral view 49 structures of internal male terminalia, ventral view 50 ejaculatory apodeme, lateral view 51 phallus, phallapodeme, pre- and postgonite, lateral view. Scale bar = 0.1 mm.

Figures 27–34.27–29 Aristosyrphus primus male: 27 habitus dorsal (Brazil, coll. J.T. Smit) 28 wing (Brazil, coll. J.T. Smit) 29 genitalia lateral (Brazil, coll. SEMC) 30–34 Aristosyrphus (Eurypterosyrphus) males: 30 Aristosyrphus currani male (holotype), habitus lateral 31 Aristosyrphus. spec. (Brazil, coll. ZMAN), head lateral 32 Aristosyrphus spec. #1 (Costa Rica, coll. ZMAN), genitalia ventral 33 Aristosyrphus spec. #2 (Brazil, coll. ZMAN), genitalia lateral 34 Aristosyrphus spec. #1 (Costa Rica, coll. ZMAN), genitalia lateral.

Figures 62–64.Hydrochasma denticum sp. n. (Ecuador. Orellana: Río Tiputini) 62 head, anterior view 63 same, lateral view 64 same, oblique view. Scale bar = 0.1 mm.

Figure 7.Postgonite and anterior part of hypandrium, lateral view. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.

Figures 81–84.Illustration of Allotrichoma baliops sp. n. (male) 81 epandrium, cerci, surstylus, posterior aspect 82 same, lateral aspect 83 aedeagus, phallapodeme, gonite, hypandrium, ventral aspect 84 same, lateral aspect. Scale bar = 0.1 mm.