Cyclorrhapha

Figures 136–144.136–138 Masarygus planifrons male (syntype): 136 habitus dorsal 137 habitus lateral 138 head frontal 139 Masarygus planifrons female (syntype), habitus dorsal 140–143 Masarygus palmipalpus male (holotype): 140 habitus dorsal 141 habitus lateral 142 head frontal 143 head lateral 144 antenna.

Figures 91–94.Hydrochasma incisum (Coquillett) (Peru. Cuzco: Paucartambo, Atalaya) 91 epandrium and cerci, posterior view 92 same, lateral view 93 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 94 same, lateral 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.

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

Figures 16–29.16 Toxomerus picudus, lateral 17 Toxomerus picudus, dorsal 18 Toxomerus hauseri, lateral 19 Toxomerus hauseri, dorsal 20 Toxomerus hauseri, head, frontal 21 Toxomerus picudus, head, frontal 22 Toxomerus hieroglyphicus, head, lateral 23 Toxomerus picudus, head, lateral 24 Toxomerus nitidus, thorax, lateral 25 Toxomerus laenas, thorax, lateral 26 Toxomerus paragrammus, abdomen, dorsal 27 Toxomerus incaicus, abdomen, dorsal 28 Toxomerus circumcinctus, male genitalia, 9th tergum and associated structures: a dorsal b lateral 29 Toxomerus anthrax, male genitalia, 9th tergum and associated structures: a dorsal b lateral.

Figures 45–49.Illustration of Allotrichoma robustum sp. n. (male) 45 aedeagus, phallapodeme, gonite, hypandrium, ventral aspect 46 same, lateral aspect 47 epandrium, cerci, surstylus, lateral aspect 48 same, posterior aspect 49 male 5th sternal flap and medial process, lateral aspect. Scale bar = 0.1 mm.

Figures 73–75.Illustrations of Planinasus atrifrons sp. n. (male). 73 epandrium and surstylus, lateral view 74 structures of internal male terminalia, ventral view 75 internal structures of male terminalia, lateral view. Scale bar = 0.1 mm.

Figure 9.Cheilosia barbafacies sp. n., mesonotum, lateral view: A male B female. Scale in mm.

Figures 145–153.145–146 Masarygus palmipalpus male (holotype): 145 wing 146 genitalia lateral 147–149 Masarygus spec. 1 male (Brazil, coll. USNM): 147 habitus dorsal 148 habitus lateral 149 head frontal 150 Masarygus spec. 2 male (Brazil, coll. USNM), habitus lateral 151–153 Menidon falcatus male (Costa Rica, coll. ZMAN): 151 habitus dorsal 152 habitus lateral 153 head frontal.

Figure 95.Distribution of Hydrochasma incisum (Coquillett).

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.

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 16–29.16 Toxomerus picudus, lateral 17 Toxomerus picudus, dorsal 18 Toxomerus hauseri, lateral 19 Toxomerus hauseri, dorsal 20 Toxomerus hauseri, head, frontal 21 Toxomerus picudus, head, frontal 22 Toxomerus hieroglyphicus, head, lateral 23 Toxomerus picudus, head, lateral 24 Toxomerus nitidus, thorax, lateral 25 Toxomerus laenas, thorax, lateral 26 Toxomerus paragrammus, abdomen, dorsal 27 Toxomerus incaicus, abdomen, dorsal 28 Toxomerus circumcinctus, male genitalia, 9th tergum and associated structures: a dorsal b lateral 29 Toxomerus anthrax, male genitalia, 9th tergum and associated structures: a dorsal b lateral.

Figure 50.Distribution of Allotrichoma robustum sp. n.

Figure 76.Distribution of Planinasus atrifrons sp. n.

Figure 10.Cheilosia barbafacies sp. n., hind tibia, posterodorsal view (y indicates the hairs on posterodorsal surface). Scale in mm.

Figures 237–244.237–240 Microdon (s.l.), male genitalia: 237 Microdon carbonarius (holotype) 238 Microdon pictipennis (Australia, coll. W. van Steenis) 239 Microdon tsara (holotype) 240 Microdon waterhousei (Australia, coll. M. Hauser) 241–242 Mixogaster breviventris male (USA, coll. RMNH): 241 habitus dorsal 242 wing 242–244 Mixogaster thecla male (Brazil, coll. J.T. Smit): 243 habitus dorsal 244 wing.

Figures 18–20.Hydrochasma faciale (Williston) (St. Vincent. St. Patrick: Cumberland Bay) 18 head, anterior view 19 same, lateral view 20 same, oblique view. Scale bar = 0.1 mm.

Figure 13.Dorsal view of female head. Position of posterior ocellus as compared to the hind eye line of female. A Melanostoma mellarium and B Melanostoma mellinum.

Figure 13.Dorsal view of female head. Position of posterior ocellus as compared to the hind eye line of female. A Melanostoma mellarium and B Melanostoma mellinum.

Figures 51–55.Illustration of Allotrichoma sabroskyi sp. n. (male) 51 epandrium, cerci, surstylus, posterior aspect 52 aedeagus, phallapodeme, gonite, hypandrium, ventral aspect 53 epandrium, cerci, surstylus, lateral aspect 54 aedeagus, phallapodeme, gonite, hypandrium, lateral aspect 55 male 5th sternal flap and medial process, lateral aspect. Scale bar = 0.1 mm.

Figures 87–89.Illustrations of Planinasus nigrifacies sp. n. (male). 87 epandrium, surstylus, hypandrium, lateral view 88 structures of internal male terminalia, ventral view 89 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 142–143.Abdomens of males, dorsal view. 142 Hydrochasma dolabrutum sp. n. (Jamaica. Clarendon: Barnswell Beach) 143 Hydrochasma urnulum sp. n. (Dominican Republic. LaVega: Jarabacoa). Scale bar = 0.1 mm.