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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figures 7–10.Hydrochasma crenulum sp. n. (Peru. Cuzco: Paucartambo, Atalaya) 7 epandrium and cerci, posterior view 8 same, lateral view 9 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 10 same, lateral view. Scale bar = 0.1 mm.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
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.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figures 13–16.Hydrochasma digitatum sp. n. (Peru. Madre de Dios: Diamante) 13 epandrium and cerci, posterior view 14 same, lateral view 15 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 16 same, lateral view. Scale bar = 0.1 mm.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figure 17.Distribution of Hydrochasma digitatum sp. n.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
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.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figures 21–24.Hydrochasma faciale (Williston) (Dominica: Layou R.) 21 epandrium and cerci, posterior view 22 same, lateral view 23 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 24 same, lateral view. Scale bar = 0.1 mm.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figure 25.Distribution of Hydrochasma faciale (Williston).
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figures 26–29.Hydrochasma patens Cresson (Chile. Talca: Rio Lircay, 11 km N Talca) 26 epandrium and cerci, posterior view 27 same, lateral view 28 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 29 same, lateral view. Scale bar = 0.1 mm.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figure 30.Distribution of Hydrochasma patens Cresson,
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figures 31–34.Hydrochasma rictum sp. n. (Costa Rica. Guanacaste: Playa Puerto Soley) 31 epandrium and cerci, posterior view 32 same, lateral view 33 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 34 same, lateral view. Scale bar = 0.1 mm.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figure 35.Distribution of Hydrochasma rictum sp. n.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
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.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figures 39–42.Hydrochasma sinuatum sp. n. (Mexico. Sinaloa: 13 km NE of Concordia) 39 epandrium and cerci, posterior view 40 same, lateral view 41 internal structures of male terminalia (aedeagus [shaded], phallapodeme, gonite, hypandrium), ventral view 42 same, lateral view. Scale bar = 0.1 mm.
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Wayne N. Mathis, Tadeusz Zatwarnicki
Zookeys
Figure 43.Distribution of Hydrochasma sinuatum sp. n.
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