Polyplectropus

Chamorro, Maria Lourdes & Holzenthal, Ralph W., 2010, 2582, Zootaxa 2582, pp. 1-252 : 45-47

publication ID

1175­5334

persistent identifier

https://treatment.plazi.org/id/0349878B-DD7E-A410-02FC-0F21FA12FD26

treatment provided by

Felipe

scientific name

Polyplectropus
status

 

Key to species groups of New World Polyplectropus View in CoL

1. Dorsolateral process of preanal appendage bulbous and bearing dorsal microsetae ( Fig. 4B)............... 2

- Dorsolateral process absent ( Fig. 4D) or present as a distinct sclerotized lanceolate rod ( Fig. 4F), without dorsal microsetae............................................................................... 3

2(1) Anterior basal plate of inferior appendage elongate, extending beyond anterior margin of sternum IX ( Figs. 4B).................................................................... P. santiago group, p. 146

- Anterior basal plate of inferior appendage short, not extending beyond anterior margin of sternum IX ( Fig. 5A)....................................................................... P. alienus group, p. 47

3(1) Dorsal digitate lobe on mesoventral process of preanal appendage absent ( Fig. 8B)...................... 4 - Dorsal digitate lobe on mesoventral process of preanal appendage present ( Figs. 6C, 22A)................ 12

4(3) Paired papillate lobe present or slight remnant indicated by presence of small setae ( Figs. 8A, B)........... 5

- Paired papillate lobe absent ( Figs. 8C–F)........................................................ 7

5(4) Dorsolateral process of preanal appendage absent (small remnants visible at times) ( Figs. 56–58)................................................................................ P. charlesi group, p. 113

- Dorsolateral process of preanal appendage present (may be short or elongate) ( Figs. 5C–F)............... 6

6(5) Intermediate appendage oblong, apex directed posterad, bearing few apical and basal setae ( Fig. 37A); dorsolateral arm of dorsal phallic sclerites fused apically ( Fig. 37F).............. P. bredini group (in part), p. 76

- Intermediate appendage digitate, apex directed mesad, and bearing large and small setae throughout dorsal surface ( Fig. 5F); dorsolateral arm of dorsal phallic sclerite laterally fused subapically ( Fig. 5F).................................................................................... P. thilus group, p. 193

7(4) Primary lobe of intermediate appendage prominent, usually digitate ( Fig. 9A)......................... 8

- Primary lobe of intermediate appendage very small and rounded ( Fig. 9C)....... P. manuensis group, p. 130

8(7) Intermediate appendage narrowly oblong with setae throughout entire surface, without secondary ventral lobe ( Fig. 37); posterior margin of ventral branch truncate to slightly angled and may bear a row of peg-like setae ( Fig. 37C); lower lip of tergum X prominent, produced beyond apex of median lobe of tergum X ( Fig. 37A)................................................................. P. bredini group (in part), p. 76

- Intermediate appendage simple or complex (i.e., with secondary lobes) with setae apically, medially, scattered dorsally, or basally and apically; posterior margin of ventral branch variously shaped with or without peg-like setae, if present apically not in a row (Figs. (39A, D; 43D), or also present medially ( Fig. 118C); lower lip of tergum X not very prominent, usually not produced beyond apex of tergum X.......................... 9

9(8) Intermediate appendage apically incised, with setae medially ( Fig. 117A); mesoventral process of preanal appendage apparently absent, slight lateral lobe remains ( Fig. 117C); anterior basal plate broad, not tapering distally ( Fig. 117)......................................... P. beccus Hamilton & Holzenthal , p. 224

- Intermediate appendage oblong, bearing few apical and basal setae ( Fig. 9D); mesoventral process of preanal appendage present, sometimes both processes fused mesally ( Fig. 51C); anterior basal plate tapering or not distally ( Figs. 41A, 51A)................................................................... 10

10(9) Dorsolateral process of preanal appendage present ( Fig. 5E) or, if absent, inferior appendage with dorsal and ventral branches shallowly fused ( Fig. 4E)............................. P. bredini group (in part), p. 76

- Dorsolateral process of preanal appendage absent ( Figs. 118, 120); inferior appendages with dorsal and ventral branches not shallowly fused ( Fig. 118)........................................................ 11

11(10) Intermediate appendage with secondary ventral lobes ( Fig. 118A); primary lobe of intermediate appendage with several apical setae ( Fig. 118); peg-like setae present medially and apically on ventral branch of inferior appendage ( Fig. 118); ventral branch of inferior appendage quadrate (in ventral view) ( Fig. 118D)...................................................................... P. beutelspacheri Bueno-Soria , p. 226

- Intermediate appendage without secondary ventral lobes ( Fig. 120A); setae on ventral branch of inferior appendage absent ( Fig. 120D); ventral branch of inferior appendage produced posterolaterally into acute point, base of ventral branch quadrate ( Fig. 120D)............................... P. nayaritensis Bueno-Soria , p. 230

12(3) Dorsal digitate lobe on mesoventral process of preanal appendage originating apically ( Figs. 5D, 6C)...... 13

- Dorsal digitate lobe on mesoventral process of preanal appendage originating basally ( Figs. 8A, 41)...... 16

13(12) Ventral branch of inferior appendage broadly oblong or quadrate ( Fig. 11C)........................... 14

- Ventral branch of inferior appendage digitate ( Fig. 10A).................... P. annulicornis group, p. 50

14(13) Peg-like spines present in endothecal phallic membrane ( Figs. 62E, F, H); dorsolateral process of preanal appendage absent ( Figs. 62A, C).......................................... P. guyanae group, p. 127

- Endothecal phallic membrane with or without spines, if present not peg-like ( Fig. 67E); dorsolateral process of preanal appendage present ( Fig. 41A) or absent ( Fig. 59A)........................................ 15

15(14) Lanceolate spines present in endothecal phallic membrane ( Figs. 60E, F); intermediate appendage complex (with more than 1 lobe) ( Figs. 59–61A).................................. P. fuscatus View in CoL group (in part), p. 120

- Spines absent in endothecal phallic membrane ( Figs. 53E, F); inferior appendage with dorsal and ventral branches shallowly fused ( Figs. 4E, 53)........................... P. bredini View in CoL group ( P. petrae ), p. 106

16(12) Dorsal branch of inferior appendage without peg-like setae ( Fig. 11E); apex of mesoventral process of preanal appendage sclerotized, laterally without small papillate lobe ( Figs. 59–61C,).......................... 17

-. Dorsal branch of inferior appendage with peg-like setae ( Figs. 41A, C, D); apex of mesoventral process of preanal appendage not sclerotized, laterally with small papillate lobe ( Fig. 41C).................................................................................. P. bredini View in CoL group ( P. colombianus ), p. 85

17(16) Ventral branch of inferior appendage shorter than dorsal branch (never the same size) ( Figs. 67–71)............................................................................... P. narifer View in CoL group, p. 136

- Ventral branch of inferior appendage equal in size or longer than dorsal branch ( Figs. 59–61)............................................................................ P. fuscatus View in CoL group (in part), p. 120

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