Polyplectropus thilus
Creators: name: Chamorro, Maria Lourdes
name: Holzenthal, Ralph W.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Polycentropodidae
Polyplectropus
Polyplectropus thilus

description: Key to the males of P. thilus species group   
1 Dorsal branch of inferior appendage with peg-like setae (Fig. 98A).................................. 2  
- Dorsal branch of inferior appendage without peg-like setae (Fig. 100A)............................... 4  
2(1) Dorsolateral process of preanal appendage long (Fig. 105A)........................................ 3  
 - Dorsolateral process of preanal appendage short (Fig. 114A)................. P. venezolanus, n. sp., p. 218   
 3(2) Dorsal branch with more than 1 peg-like setae on small ventral projection (Figs. 98A, D)............................................................................................................................................................... P. blahniki, n. sp., p. 193   
 - Dorsal branch with 1 peg-like spine (Figs. 108A, D)................. P. pugiunculatus Botosaneanu, p. 209   
4(1) Dorsolateral process of preanal appendage without apical sculpturing (Fig. 106A); mesoventral process of preanal appendage not quadrate but apically hooked (Figs. 106A, 109A)............................. 5  
 - Dorsolateral process of preanal appendage with apical sculpturing (Figs. 103A, B); mesoventral process of preanal appendage quadrate (Fig. 103A).................................. P. cuzcoensis, n. sp., p. 200   
5(4) Dorsal and ventral branches of inferior appendage shallowly fused (Fig. 106A)......................... 6  
- Dorsal and ventral branches of inferior appendage not shallowly fused (Fig. 107A)..................... 7  
 6(5) Intermediate appendage broad, ventrally with enlarged digitate papillate lobe (Figs. 106A, C).................................................................................... P. insularis, n. sp., p. 206   
 - Intermediate appendage narrow; papillate lobe small (Fig. 109A, C)............. P. puyoensis, n. sp., p. 211   
7(5) Intermediate appendage with distinctive membrane surrounding phallocrypt (Figs. 107A, C).............. 8  
- Intermediate appendage entire, without distinctive membrane surrounding phallocrypt (Figs. 101A, C)...... 10  
8(7) Dorsal branch of inferior appendage thin, posterior margin truncate (Fig. 113A)........................ 9  
 - Dorsal branch of inferior appendage ‘thick’ (Fig. 107D); posterior margin rounded (Fig. 107A).......................................................... P. paradelphae Chamorro-Lacayo & Holzenthal, p. 207   
 9(8) Ventral branch of inferior appendage elongate and acutely pointed; peg-like setae along entire dorsal surface (Figs. 100A, D); dorsolateral process of preanal appendage medium-size (Fig. 100A)...................................................................................... P. carolae Bueno-Soria, p. 196   
 - Ventral branch of inferior appendage short (Figs. 113A, D); peg-like setae basal on dorsal surface (Figs. 113A, C); dorsolateral process of preanal appendage elongate (Figs. 113A)............. P. thilus (Denning), p. 216   
10(7) Dorsal branch oblong, length more than twice as wide (Fig. 116A).................................. 11  
 - Dorsal branch of inferior appendage wide, length no more than twice the width (Fig. 101A); mesal margin (interior) of dorsal branch with ridges (Fig. 101G)............................. P. cressae, n. sp., p. 198   
11(10) Ventral branch digitate in ventral view (Fig. 115D).............................................. 12  
- Ventral branch deltoid to quadrate and short (Fig. 104D)......................................... 13  
 12(11) Apex of mesoventral process of preanal appendage acutely pointed (Fig. 116C)....... P. zuliae, n. sp., p. 222   
 - Apex of mesoventral process of preanal appendage rounded (Fig. 115C)............................................................................... P. yolandae Chamorro-Lacayo & Holzenthal, p. 220   
13(12)Ventral branch of inferior appendage deltoid (with mesal margin angled) (Fig. 105D).......................14  
 - Ventral branch of inferior appendage quadrate (with mesal margin straight) (Fig. 104D)..................................................................................................................... P. deltoides (Yamamoto), p. 202   
 14(13) Mesoventral process of preanal appendage apically acute (Figs. 105A, C)... P. denticulus Bueno-Soria, p. 204   
 - Mesoventral process of preanal appendage apically truncate (Fig. 112C) or slightly rounded (Fig. 110C).................................................................... P. recurvatus (Yamamoto), p. 213
description: Published as part of Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, pp. 1-252 in Zootaxa 2582 on pages 223-224