Caddisflies of the Yukon - Department of Biological Sciences ...

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812 G.B. Wiggins and C.R. Parker FIGS. 2 – 3. 2, Rhyacophila mongolica Schmid, Arefina and Levanidova (14) (Rhyacophilidae), male genitalia: a, lateral; b, segment X, caudal (YT: ROME 810565); 3, Rhyacophila sibirica McLachlan, segment X, caudal (Russia, Siberia: ROME). et al. 1993); our material has been compared with specimens provided by these authors from Russia. This is the first North American record for this species, otherwise widely distributed in the Russian Far East and Mongolia. The pharate male differs from its sister species R. sibirica McLachlan in details of segment X (cf. Figs. 2b, 3). Note 2. Goera tungusensis Martynov (47) Goera radissonica Harper and Méthot 1975, new synonymy During this study, we found that Goera radissonica Harper and Méthot (1975) from northern Quebec is a junior subjective synonym of Goera tungusensis Martynov (1909) from Siberia, confirmed through comparison by W.K. Gall of the holotype male of G. radissonica with specimens of G. tungusensis obtained from the Zoological Institute, St. Petersburg. Note 3. Ceraclea nigronervosa (Retzius) (56) We found 2 forms of adults of this species in the Yukon and Beringian collections studied. In both forms the dark veins of the forewing contrast strongly against the membrane, but the wing membrane is reddish brown in one and gray to colourless in the other. The gray-winged form is inferred to be typical for the species, in accordance with McLachlan’s (1877) description which applies to specimens from northern and central Europe; we have similar material from Finland. However, the brown-winged form shows several distinctive characters in the male genitalia as described below. Male genitalia (brown-winged form, Fig. 4). Segment IX in ventral view approximately twice as wide as long (width less than twice length in gray-winged form, Fig. 6); basal segment of inferior appendages extended into a prominent posteroventral process (little extended in gray-winged form). Segment X with superior appendages long and tapered apically (shorter and not tapered in gray-winged form); segment X with each ventrolateral lobe bearing short stout setae basally (stout setae lacking in gray-winged form). Phallus with apical membranous endotheca spherical in caudal view (less expanded in gray-winged form). Female genitalia. The female genitalic structure is variable and no characters concordant with the males were found; characters illustrated for each form (Figs. 5, 7) can occur in both
Caddisflies of the Yukon 813 FIGS. 4 – 7. Ceraclea nigronervosa (Retzius) (56) (Leptoceridae). 4, Brown-winged form (YT: 810525d ROME), male genitalia: a, lateral; b, dorsal; c, caudal; d, ventral; e; phallus, lateral; 5, Brown-winged form (YT: 810525d ROME), female genitalia: a, lateral; b, dorsal; 6, Gray-winged form (YT: 810522b ROME), male genitalia: a, lateral; b, dorsal; c, caudal; d, ventral; e, phallus, lateral; 7, Gray-winged form (Russia: Tunguska, Yenisei R., ROME), female genitalia: a, lateral; b, dorsal.
Page 1 and 2: Caddisflies of the Yukon FRONTISPIE
Page 3 and 4: Caddisflies of the Yukon 789 and ta
Page 5 and 6: Caddisflies of the Yukon 791 impose
Page 7 and 8: Caddisflies of the Yukon 793 outlin
Page 9 and 10: Caddisflies of the Yukon 795 Genus
Page 11 and 12: Caddisflies of the Yukon 797 25. Ch
Page 13 and 14: Caddisflies of the Yukon 799 are de
Page 15 and 16: Caddisflies of the Yukon 801 53. Le
Page 17 and 18: Caddisflies of the Yukon 803 Family
Page 19 and 20: Caddisflies of the Yukon 805 85. Gr
Page 21 and 22: Caddisflies of the Yukon 807 Biolog
Page 23 and 24: Caddisflies of the Yukon 809 Biolog
Page 25: Caddisflies of the Yukon 811 Genus
Page 29 and 30: Caddisflies of the Yukon 815 FIGS.
Page 35 and 36: Caddisflies of the Yukon 821 above
Page 37 and 38: Caddisflies of the Yukon 823 was mu
Page 39 and 40: Caddisflies of the Yukon 825 recogn
Page 41 and 42: Limnephilus extractus Walker (99) L
Page 43 and 44: Apataniidae Apatania zonella (Zette
Page 45 and 46: Integripalpia Apataniidae Apatania
Page 47 and 48: Caddisflies of the Yukon 833 wester
Page 49 and 50: Caddisflies of the Yukon 835 Micras
Page 51 and 52: Caddisflies of the Yukon 837 been b
Page 53 and 54: Caddisflies of the Yukon 839 years,
Page 55 and 56: other reasons, most Palaearctic-Eas
Page 57 and 58: Caddisflies of the Yukon 843 In add
Page 59 and 60: Caddisflies of the Yukon 845 FIG. 2
Page 63 and 64: Caddisflies of the Yukon 849 press)
Page 65 and 66: Caddisflies of the Yukon 851 Pleist
Page 67 and 68: Caddisflies of the Yukon 853 Hydrop
Page 69 and 70: Caddisflies of the Yukon 855 TABLE
Page 71 and 72: Caddisflies of the Yukon 857 genera
Page 73 and 74: Caddisflies of the Yukon 859 strong
Page 75 and 76: Caddisflies of the Yukon 861 assure
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Caddisflies of the Yukon 863 Gislas
Page 79 and 80:
Caddisflies of the Yukon 865 Reeves
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