Eutichurus Simon 1897
Creators: name: Bonaldo, Alexandre B.
name: Lise, Arno A.
name: Ramírez, Martín J.
name: Saturnino, Regiane
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Miturgidae
Eutichurus

description: Key to species of Eutichurus (updated from Bonaldo 1994)
1 Males (those of E. arnoi, E. manu and E. saylapampa, unknown)................................................ 2
- Females (those of E. abiseo, E. cuzco, E. pallatanga and E. yalen, unknown)..................................... 26
2(1) Retrolateral tibial apophysis represented by a single branch (Figs 1, 6, 25; Bonaldo 1994: figs 19, 29, 38, 48, 56, 64)....... 3
- Retrolateral tibial apophysis bifid or trifid (Figs 14, 17; Bonaldo 1994: figs 34, 66, 76, 86, 91)........................ 19
3(2) Retrolateral tibial apophysis tuberculate, with a small apical projection (Bonaldo 1994: figs 56, 57)....... E. furcifer Kraus
- Retrolateral tibial apophysis otherwise (Figs 1, 25; Bonaldo 1994: figs 19, 29, 38, 48, 64)............................ 4
4(3) Retrolateral tibial apophysis short, excavated; median apophysis with a longitudinal median keel (Bonaldo 1994: figs 43, 45, 48, 49).............................................................................................. 5
- Retrolateral tibial apophysis long, not excavated; median apophysis without such keel (Figs 6, 9; Bonaldo 1994: figs 19, 22, 26, 29, 35, 38, 62)..................................................................................... 6
5(4) Embolus with a prolateral median process (Bonaldo 1994: figs 43, 44)........................... E. tropicus (L. Koch)
- Embolus without process (Bonaldo 1994: figs 48, 49)...................................... E. valderramai Bonaldo
6(4) Embolar base fused to the tegulum (Fig. 1; Bonaldo 1994: Fig. 35).............................................. 7
- Embolus articulated, connected to the tegulum by a membrane (Figs 4, 9, 12; Bonaldo 1994: figs 19, 22, 30, 26, 38, 62)... 8
7(6) Embolus with lamellar tip (Bonaldo 1994: figs 35, 36).......................................... E. abiseo Bonaldo
- Embolus filiform (Figs 1, 2)................................................................ E. paredesi n. sp.
8(6) Embolus with a small retrolateral sub-apical process (Bonaldo 1994: figs 62, 63; Laborda & Simó 2015: fig. 1A)................................................................................................ E. ibiuna Bonaldo
- Embolus without processes (Figs 5, 10; Bonaldo 1994: figs 19, 22, 26) or with a prolateral process (Figs 16, 20, 28; Bonaldo 1994: figs 30, 39)..................................................................................... 9
9(8) Embolus with a prolateral process (Figs 16, 21, 28; Bonaldo 1994: figs 30, 39).................................... 10
- Embolus without process (Figs 5, 10; Bonaldo 1994: figs 19, 22, 26)........................................... 15
10(9) Median apophysis strongly sculptured, with several conspicuous sulci (Bonaldo 1994: figs 29, 31)........ E. cuzco Bonaldo
- Median apophysis not strongly sculptured (Figs 15, 20, 27, 58; Bonaldo 1994: figs 38, 40).......................... 11
11(10) Embolar prolateral process inserted medially, pars pendula absent (Fig. 28; Bonaldo 1994: fig. 39).................... 12
- Embolar prolateral process inserted sub-apically, pars pendula present (Figs 21, 59)................................ 13
12(11) Median prong of median apophysis short (Bonaldo 1994: figs 38, 40; Ramírez 2014, figs 147A, C).... E. lizeri Mello-Leitão
- Median prong of median apophysis long (Figs 27, 29)........................................ E. marquesae Bonaldo
13(11) Embolus wide and short relative to tegulum (Figs 58, 59)......................................... E. nancyae n. sp.
- Embolus narrow and long relative to tegulum (Figs 20, 21, 23, 24)............................................. 14
14(13) Median prong of median apophysis with a pair of apical projections (Figs 20, 22)................... E. tequendama n. sp.
- Median prong of median apophysis without apical projections (Figs 23, 25)......................... E. madre Bonaldo
15(9) Embolus flattened; prolateral margin of median apophysis with transversal ridges (Bonaldo 1994: figs 26, 28).................................................................................................... E. yalen Bonaldo
- Embolus conic, median apophysis without transversal ridges (Figs 5, 10; Bonaldo 1994: figs 19, 22)................... 16
16(15) Retrolateral tibial apophysis expanded distally (Figs 6, 11)................................................... 17
- Retrolateral tibial apophysis tapering toward the apex (Bonaldo 1994: figs 20, 23)................................. 18
17(16) Conductor hyaline (Fig. 4).................................................................. E. murgai n. sp.
- Conductor partially sclerotized (Fig. 9)...................................................... E. zarate Bonaldo
18(16) Retrolateral tibial apophysis gradually tapering from base; embolus inserted basally (Bonaldo 1994: figs 19, 20).................................................................................................... E. ferox Simon
- Retrolateral tibial apophysis abruptly tapering from distal third; embolus inserted medially (Bonaldo 1994: figs 22, 23)............................................................................................. E. silvae Bonaldo
19(2) Retrolateral tibial apophysis bifid (Figs 14, 17; Bonaldo 1994: figs 34, 67, 76).................................... 20
- Retrolateral tibial apophysis trifid (Bonaldo 1994: figs 86, 91)................................................. 25
20(19) Retrolateral tibial apophysis split medially; median prong of median apophysis present (Fig. 17; Bonaldo 1994: figs 32, 3 4).................................................................................................... 21
- Retrolateral tibial apophysis split basally; median prong of median apophysis absent (Fig. 14; Bonaldo 1994: figs 67, 72, 76).................................................................................................... 22
21(20) Embolus without prolateral process, tapering distally (Bonaldo 1994: figs 32, 33).................. E. pallatanga Bonaldo
- Embolus with prolateral process, distally wide (Figs 15, 16)........................................ E. yungas n. sp.
22(20) Embolus conic, without processes (Bonaldo 1994: figs 75, 76)..................................... E. luridus Simon
- Embolus flattened, with prolateral process (Fig. 13; Bonaldo 1994: figs 65, 70)................................... 23
23(22) Median apophysis long, with the apex prolaterally oriented; dorsal prong of retrolateral tibial apophysis shorter than the ventral prong (Figs 12, 14)....................................................................... E. cumbia n. sp.
- Median apophysis short, with the apex oriented proximally; ventral and dorsal prongs of retrolateral tibial apophysis similarly sized (Bonaldo 1994: figs 67, 72)........................................................................ 24
24(23) Apex of embolar process acute; apex of embolus apically oriented (Bonaldo 1994: figs 65–67)........... E. ravidus Simon
- Apex of embolar process rounded; apex of embolus prolaterally oriented (Bonaldo 1994: figs 70–72).. E. itamaraju Bonaldo
25(19) Apex of median apophysis wide; embolar apex bifid (Bonaldo 1994: figs 89, 91)........... E. putus O. Pickard-Cambridge
- Apex of median apophysis narrow; embolar apex trifid (Bonaldo 1994: figs 84, 86)............... E. sigillatus Chickering
26(1) Epigynal posterior plates fused, with a longitudinal median suture (Fig. 18; Bonaldo 1994: figs 41, 82, 87, 92)........... 27
- Epigynal posterior plates not fused medially (Figs 7, 52; Bonaldo 1994: figs 21, 46, 59, 68).......................... 31
27(26) Epigynal anterior projections relatively large; median field longer than wide (Fig. 18; Bonaldo 1994: figs 41, 42)....... 28
- Epigynal anterior projections relatively small; median field wider than long (Bonaldo 1994: figs 82, 87, 92)............. 29
28(27) anterior projections covering the anterior half of the posterior plates in ventral view; anterior margin of posterior plates con- verging medially in angle (Bonaldo 1994: fig. 41; Ramírez 2014: fig. 175G)...................... E. lizeri Mello-Leitão
- Anterior projections covering less than the anterior half of the posterior plates in ventral view; anterior margin of posterior plates converging medially in a straight line (Fig. 18)............................................. E. yungas n. sp.
29(27) Median field longer than wide, with a posterior median projection; anterior margins of posterior plates W-shaped (Bonaldo 1994: figs 87, 88)................................................................... E. sigillatus Chickering
- Median field as long as wide, without projection; anterior margins of posterior plates otherwise (Bonaldo 1994: figs 82, 92)..................................................................................................... 30
30(29) Anterior projections projected over the median field; anterior margins of posterior plates slightly oblique (Bonaldo 1994: figs 82, 83)................................................................................. E. manu Bonaldo
- Anterior projections not projected over the median field; anterior margins of posterior plates straight (Bonaldo 1994: figs 9 2, 93)......................................................................... E. putus O. Pickard-Cambridge
31(26) Epigynal anterior projections reduced, inconspicuous (Fig. 61)..................................... E. nancyae n. sp.
- Epigynal anterior projections conspicuous (Figs 7, 52, 63; Bonaldo 1994: figs 21, 46, 54).......................... 32
32(31) Anterior projections fused to posterior plates (Figs 63, 65; Laborda & Simó 2015: fig. 1D)............. E. ibiuna Bonaldo
- Anterior projections not fused to posterior plates (Figs 7, 52; Bonaldo 1994: figs 21, 46, 50)........................ 33
33(32) Each inner margin of anterior projections excavated; posterior plates laterally constricted (Bonaldo 1994: figs 54, 55)............................................................................................. E. zarate Bonaldo
- Anterior projections and posterior plates otherwise (Figs 7, 52; Bonaldo 1994: figs 21, 46, 68, 79).................... 34
34(33) Anterior projections larger or slightly smaller than posterior plates (Fig. 7; Bonaldo 1994: figs 21, 24, 46, 50, 52, 53).... 35
- Anterior projections distinctly smaller than posterior plates (Fig. 52; Bonaldo 1994: figs 59, 68, 73, 77, 79, 80).......... 41
35(34) Anterior projections triangular, with acute apices (Fig. 7; Bonaldo 1994: fig. 52).................................. 36
- Anterior projections otherwise (Bonaldo 1994: figs 21, 24, 46, 50, 53)........................................... 37
36(35) Posterior margin of anterior projections strongly procurve (Bonaldo 1994: fig. 52)................ E. saylapampa Bonaldo
- Posterior margin of anterior projections nearly straight (Fig. 7)...................................... E. murgai n. sp.
37(35) Median field subtriangular, bulging between anterior projections (Bonaldo 1994: fig. 53)................ E. arnoi Bonaldo
- Median field otherwise (Bonaldo 1994: figs 21, 24, 46, 50)................................................... 38
38(37) Median field squared, as long as wide; anterior projections truncated (Bonaldo 1994: fig. 46)......... E. tropicus (L. Koch)
- Median field longer than wide; anterior projections rounded (Bonaldo 1994: figs 21, 24, 50)......................... 39
39(38) Apices of anterior projections rugose, strongly sclerotized (Bonaldo 1994: fig. 50)............... E. valderramai Bonaldo
- Apices of anterior projections smooth (Bonaldo 1994: figs 21, 24).............................................. 40
40(39) Median field surface plain anteriorly, with a longitudinal posterior groove (Bonaldo 1994: fig. 24)........ E. silvae Bonaldo
- Median field surface concave anteriorly, without groove (Bonaldo 1994: fig. 21)........................ E. ferox Simon
41(34) Each posterior plate with a posterior lateral excavation (Bonaldo 1994: fig. 60)........................ E. furcifer Kraus
- posterior plates without excavations (Bonaldo 1994: figs 68, 77, 79, 80)......................................... 42
42(41) Anterior projections projected over the median field (Bonaldo 1994: figs 68, 73).................................. 43
- Anterior projections not projected over the median field (Bonaldo 1994: figs 77, 79, 80)............................ 44
43(42) Median field as long as wide (Bonaldo 1994: fig. 68)............................................ E. ravidus Simon
- Median field longer than wide (Bonaldo 1994: fig. 73)....................................... E. itamaraju Bonaldo
44(42) Anterior projections not projected over posterior plates (Fig. 52; Bonaldo 1994: fig. 80)............. E. marquesae Bonaldo
- Anterior projections projected over posterior plates (Bonaldo 1994: figs 77, 79)................................... 45
45(44) Anterior projections gently tapering (Bonaldo 1994: fig. 77)....................................... E. luridus Simon
- Anterior projections truncated (Bonaldo 1994: fig. 79).......................................... E. madre Bonaldo
description: Published as part of Bonaldo, Alexandre B., Lise, Arno A., Ramírez, Martín J. & Saturnino, Regiane, 2018, Revisiting the spider genus Eutichurus Simon, 1897 (Araneae, Eutichuridae): new species and complementary descriptions, pp. 321-346 in Zootaxa 4382 (2) on pages 323-325, DOI: 10.11646/zootaxa.4382.2.6, http://zenodo.org/record/1182079