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Boonsatien Boonsoong, Dietrich Braasch
Zookeys
Figure 1.A Habitus of Epeorus aculeatus Braasch, 1990 B lamellae of gills 7 of Epeorus khayengensis Boonsoong & Braasch, 2010 C–E ventral view of abdomen (C), abdominal gills 1 (D) and abdominal terga of (E) Epeorus thailandensis sp. n. F abdominal terga of Epeorus unicornutus Braasch, 2006 G abdominal terga of Epeorus khayengensis Boonsoong & Braasch, 2010 H–J abdominal terga (H), lamellae of gills 1 (I) and tergum VII (J) of Epeorus inthanonensis Braasch & Boonsoong, 2010.
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Figures 1–3.Thalerosphyrus determinatus (Walker, 1853). 1 Habitus in dorsal view 2 Habitus in ventral view 3 Detail of abdominal segments VI–IX in ventral view.
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Figures 1–4.Rhithrogeniella ornata Ulmer, 1939. 1 Genitalia of the male imago (holotype) in ventral view 2 Foreleg of a male subimago (paratype) 3 Hindleg of a male subimago (paratype) 4 Penis lobes of a male subimago (paratype): plain line, cuticular structures of the subimago; dotted line, outline of the imago penis lobes.
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Novi Kneevac, Severni Banat, Serbia
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WWT Grafton Woods. Worcs SO973563
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""Centroptilum" sp1 female larva from the Otways, Victoria, Australia"
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femaleNew Paltz, NY (July 6, 2014)
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Tasmanophlebia larva from the Aire River, Otways Range, Victoria, Australia
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Cradley, Malvern, Worcs. SO729470
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I was shown a location where these mayflies were swarming in abundance. There were so many I was able to catch this one in my hand, right out of the air
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Jappa edmundsi male subimago
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These drowned mayflies was found in a pond in a park in middle Ebro valley, Saragossa, NE Spain.Species recorded from the same province are Caenis horaria, Caenis luctuosa and Caenis pusilla. I'm unable to distinguish them. Somebody help me, please?
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Novi Knezevac, Severni Banat, Serbia
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Camin, Veneto, Italy
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Briantspuddle, England, United Kingdom
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Stratford-on-Avon District, England, United Kingdom
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Shannon, Tasmania, Australia
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Purbeck District, England, UK
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Hind wing with forked second longitudinal vein, weird costal process (not shown well here). In one species the marginal intercalaries of the forewing are single in the basal half and double in the distal half (at least in the males - females that might be the same species have single the whole length of the wing). The other species appear all to have single intercalaries. Mesonotal suture is concave, unlike Centroptilum
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maleNew Paltz, NY (July 5, 2014)
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Liausson, Languedoc-Roussillon, France
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Ephemerellid mayfly. Original illustration by Christine Elder.
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Catacol Isle of Arran. NR915495