Schendylops
Creators: name: Pereira, Luis Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Chilopoda
Geophilomorpha
Schendylidae
Schendylops

description: Key to the Neotropical species of Schendylops with sternal pore-fields all along the trunk
(including those having an interrupted series on some mid-body sternites).
1. With pore-fields on sternites of anterior and posterior regions of the body, but totally absent on some intermediate sternites...................................................................................................... 2
- With pore-fields in an uninterrupted series all along the body.................................................. 6
2. All pore-fields undivided............................................................................... 3
- Some pore-fields divided in two subsymmetrical areas........................................................ 5
3. 65 leg-bearing segments (female); body length 29 mm (female); proximal margin of some anterior sternites provided medially with a small shallow pit, accompanied by an internal chitinous thickening.................. S. demangei (Pereira, 1981)
- 43 or 53 leg-bearing segments; body length 11–18 mm; proximal margin of anterior sternites without a shallow pit........ 4
4. 53 leg-bearing segments (female); body length 11 mm (female); a.a. without type c sensilla; dentate lamellae of mandibles divided in two blocks; coxosternite of first maxillae without setae; coxosternal lappets of first maxillae small, not attaining the
anterior margin of the first article of the telopodite; calyx of poison gland palmate in shape; claws of walking legs conspicuously curved internally; posterior limit of sternal pore-field series on penultimate sternite; pore-fields not accompanied by additional pores at their sides; pretergite of ultimate leg-bearing segment with intercalary pleurites............................................................................................ S. minutus (Pereira & Minelli, 1993) - 43 leg-bearing segments (male); body length 18 mm (male); some a.a. with type c sensilla; dentate lamellae of mandibles divided in three blocks; coxosternite of first maxillae with 2+2 setae; coxosternal lappets of first maxillae relatively large, attaining the anterior margin of the first article of the telopodite; calyx of poison gland cylindrical in shape; claws of walking legs not conspicuously curved internally; posterior limit of sternal pore-field series on antepenultimate sternite; pore-fields accompanied by additional antero-lateral pores; pretergite of ultimate leg-bearing segment without intercalary pleurites............................................................................ S. placcii (Pereira & Minelli, 1996)
5. Male with 43 leg-bearing segments, female with 47; body length 22 mm (male), 27 mm (female); clypeus with ca. 22 median setae; posterior limit of sternal pore-field series on penultimate sternite; pretergite of ultimate leg-bearing segment without intercalary pleurites.............................................................. S. achalensis Pereira, 2008
- Male with 41 leg-bearing segments; body length 18 mm (male); clypeus with ca. 12 median setae; posterior limit of pore-field series on antepenultimate sternite; pretergite of ultimate leg-bearing segment with intercalary pleurites........................................................................................ S. demartini (Pereira & Minelli, 1996)
6. Sternite 1 with pore-field................................................................................ 7
- Sternite 1 without pore-field............................................................................ 19
7. All sternal pore-fields undivided................................................ S. labbanus (Chamberlin, 1921)
- Some sternal pore-fields divided in two subsymmetrical areas.................................................. 8
8. Posterior limit of sternal pore-field series on antepenultimate sternite............................................ 9
- Posterior limit of sternal pore-field series on penultimate sternite.............................................. 14
9. Side-pieces of labrum with ca. 25+25 teeth; dentate lamellae of mandibles with ca. 16–23 teeth; clypeus with ca. 34 median setae....................................................................... S. longitarsis (Silvestri, 1895)
- Side-pieces of labrum with ca. 5-11+5-11 teeth; dentate lamellae of mandibles with ca. 5–15 teeth; clypeus with 10–26 median setae.............................................................................................. 10
10. With 45 to 55 leg-bearing segments...................................................................... 11
- With 57–63 leg-bearing segments........................................................................ 12
11. Antennae ca. 3.2 times as long as cephalic plate; antennae showing few setae of different lengths on a.a. I; specialized sensilla on a.a. II, V, IX and XIII placed on areas reticulated as the remaining a.a. surfaces; a.a. XIV with ca. 9 claviform sensilla on the external edge and ca. 5 on the internal edge; additional antero-lateral pores accompanying sternal pore-fields on sternites 2–19; width/length ratio of tergite of female ultimate leg-bearing segment ca. 2.0: 1; 49 leg-bearing segments (female)...................................................................................... S. iguapensis (Verhoeff, 1938)
- Antennae ca. 4.2 times as long as the cephalic plate; antennae showing few setae of different lengths on a.a. I–IV; specialized sensilla on a.a. II, V, IX and XIII placed on hyaline, unreticulated, unpigmented areas (Fig. 85); a.a. XIV with ca. 20–35 claviform sensilla on the external edge and ca. 11–15 on the internal edge; additional antero-lateral pores accompanying sternal pore-fields on sternites 1–3; width/length ratio of tergite of female ultimate leg-bearing segment ca. 1.3: 1; 47, 49, 51, 53 or 55 leg-bearing segments (female), 45, 47, (probably 49, 51), 53 or 55 (male).................................................................................................... S. marchantariae (Pereira, Minelli & Barbieri, 1995)
12. Tarsus 2 of male ultimate legs spindle-shaped..................................... S. mesopotamicus (Pereira, 1981)
- Tarsus 2 of male ultimate legs not spindly-shaped........................................................... 13
13. Male with 61 leg-bearing segments, female with 63; mid-piece of labrum with ca. 20 teeth; forcipular trochanteroprefemur with a small unpigmented tubercle on the apical medial edge; male ultimate legs ca. 5.3 times as long as the sternite of the ultimate leg-bearing segment; large setae on podomeres of male ultimate legs clearly differentiated in length from the remaining smaller setae................................................. S. amazonicus (Pereira, Minelli & Barbieri, 1994)
- Male with 57 leg-bearing segments; mid-piece of labrum with ca. 12 teeth; forcipular trochanteroprefemur unarmed on medial edge; male ultimate legs ca. 4.6 times as long as the sternite of the ultimate leg-bearing segment; large setae on podomeres of male ultimate legs poorly differentiated in length from the remaining smaller setae............. S. borellii (Silvestri, 1895)
14. Ultimate leg-bearing segment without intercalary pleurites at the sides of the ultimate pretergite (Fig. 94)......................................................................................... S. parahybae (Chamberlin, 1914)
- Ultimate leg-bearing segment with intercalary pleurites at the sides of the ultimate pretergite........................ 15
15. 69 leg-bearing segments (male and female); body length 70 mm (female); body width 2 mm (female); coxosternite of first maxillae with ca. 14+11 setae (Fig. 67); coxosternite of second maxillae with ca. 26+34 setae (Fig. 67)............................................................................................... S. demelloi (Verhoeff, 1938)
- 45–55 leg-bearing segments; body length 16–36 mm; coxosternite of first maxillae with 2+2 setae; coxosternite of second maxillae with ca. 9-17+9-17 setae....................................................................... 16
16. Body length 16 mm (female); coxosternite of first maxillae with a wide median longitudinal sulcus not reaching the anterior and posterior margins; dorsal and ventral edges of apical claws of the telopodites of second maxillae with ca. 7–10 teeth; 47 leg-bearing segments................................................... S. tropicus (Brölemann & Ribaut, 1911)
- Body length 27–36 mm; coxosternite of first maxillae without a median longitudinal sulcus; dorsal and ventral edges of apical claws of the telopodites of second maxillae with ca. 14–26 teeth; 45, 49–55 leg-bearing segments.................... 17
17. 45 leg-bearing segments (female); anterior margin of cephalic plate conspicuously notched in the middle (Fig. 10); dentate lamellae of mandibles divided in two blocks (Figs. 13–15); basal internal edge of forcipular tarsungulum with a small pigmented tooth (Figs. 21–23); width/length ratio of sternite of female ultimate leg-bearing segment ca. 1.40: 1..............
................................................................................... S. grismadoi sp. nov. - 49–55 leg-bearing segments; anterior margin of cephalic plate not notched in the middle; dentate lamellae of mandibles divided in three blocks; basal internal edge of forcipular tarsungulum unarmed; width/length ratio of sternite of female ultimate leg-bearing segment ca. 1.23–1.27: 1................................................................. 18
18. Female with 51 leg-bearing segments, male with 49; antennae sexually dimorphic; clypeus with ca. 17+17 median setae; dorsal and ventral edges of apical claws of telopodites of second maxillae with ca. 24–26 teeth; sternal glands pale yellow in colour; additional pores accompanying sternal pore-fields placed in antero-lateral position (Figs. 62–64); posterior coxal organs externally bilobed (Fig. 66); ratio of width of tarsus 1/width of tarsus 2 of female ultimate legs ca. 2.0: 1................................................................................ S. coscaroni (Pereira & Minelli, 1996)
- Female with 53 or 55 leg-bearing segments, male with 51 or 53; antennae not sexually dimorphic; clypeus with ca. 10+10 median setae; dorsal and ventral edges of apical claws of telopodites of second maxillae with ca. 17 teeth; sternal glands purple in colour; additional pores accompanying sternal pore-fields mostly placed in mid-lateral position (Fig. 80) (antero-lateral on sternite 1); posterior coxal organs externally unilobed (Fig. 84); ratio of width of tarsus 1/width of tarsus 2 of female ultimate legs ca. 1.40: 1.................................................... S. inquilinus Pereira, Uliana & Minelli, 2007
19. All sternal pore-fields undivided......................................................................... 20
- Some sternal pore-fields divided in two subsymmetrical areas................................................ 24
20. Posterior limit of sternal pore-field series on antepenultimate sternite........................................... 21
- Posterior limit of sternal pore-field series on penultimate sternite............................................... 23
21. Tarsus 2 of ultimate legs much shorter than tarsus 1................................ S. varipictus (Chamberlin, 1950)
- Tarsus 2 of ultimate legs similar in length to tarsus 1......................................................... 22
22. Anterior and posterior coxal organs unilobed; body length 12.5 mm ............... S. lesnei (Brölemann & Ribaut, 1911)
- Anterior and posterior coxal organs bilobed; body length 24 mm ........................ S. bakeri (Chamberlin, 1914)
23. 43, 45 leg-bearing segments (female); body length 18 mm (female); length of specialized sensilla on apex of a.a. XIV conspicuously longer than the claviform sensilla; lappets of coxosternite of first maxillae very small; sternal pore-fields without additional pores at their sides; pretergite of ultimate leg-bearing segment with intercalary pleurites; posterior coxal organs discreetly bilobed externally...................................... S. continuus (Pereira, Minelli & Barbieri, 1995)
- 59 leg-bearing segments (male); body length 32 mm (male); length of specialized sensilla on apex of a.a. XIV distinctly shorter than the claviform sensilla; lappets of coxosternite of first maxillae well developed; some sternal pore-fields of anterior region of the body accompanied by a few additional pores at their sides; pretergite of ultimate leg-bearing segment without intercalary pleurites; posterior coxal organs externally unilobed.................... S. colombianus (Chamberlin, 1921)
24. Posterior limit of sternal pore-field series on sternite prior to antepenultimate..................................... 25
- Posterior limit of sternal pore-field series on penultimate or antepenultimate sternite............................... 26
25. 49 leg-bearing segments (male); body length 35 mm (male); antennae ca. 3.5 times as long as the cephalic plate; clypeus with ca. 19+19 median setae; dentate lamellae of mandibles subdivided into three blocks; apical claws of telopodites of second maxillae with ca. 26–27 dorsal teeth and ca. 20–21 ventral teeth; forcipular tergite and dorsal surface of forcipular pleurites with very numerous setae; sternal pore-fields of posterior region of the body subdivided in two subsymmetrical areas..................................................................................... S. olivaceus (Crabill, 1972)
- 61 leg-bearing segments (female); body length 28 mm (female); antennae ca. 2.5 times as long as the cephalic plate; clypeus with ca. 8+11 median setae; dentate lamellae of mandibles not subdivided into blocks; apical claws of telopodites of second maxillae with ca. 11–13 dorsal teeth and ca. 9–10 ventral teeth; forcipular tergite and forcipular pleurites with few setae; sternal pore-fields of posterior region of the body undivided............................... S. paulista (Brölemann, 1905)
26. Posterior limit of sternal pore-field series on penultimate sternite.............. S. pampeanus (Pereira & Coscarón, 1976)
- Posterior limit of sternal pore-field series on antepenultimate sternite........................................... 27
27. Clypeus with ca. 7 prelabral setae; side-pieces of labrum with ca. 40+46 teeth; dentate lamellae of mandibles not subdivided into blocks (with ca. 25–30 teeth)................................................... S. sublaevis (Meinert, 1870)
- Clypeus with 2 prelabral setae; side-pieces of labrum with a maximum of 7+7 teeth; dentate lamellae of mandibles subdivided into two-three blocks (with ca. 9–14 teeth)................................................................ 28
28. 63 or 65 leg-bearing segments (female); body length 70 mm (female); clypeus with ca. 40 median setae; mid-piece of labrum with ca. 30 teeth............................................................. S. gounellei (Brölemann, 1902)
- 41–51 leg-bearing segments; body length 15–38 mm; clypeus with ca. 16–20 median setae; mid-piece of labrum with ca. 11–14 teeth........................................................................................ 29
29. 51 leg-bearing segments (female); body length 38 mm (female)................. S. verhoeffi (Brölemann & Ribaut, 1911)
- 41–49 leg-bearing segments; body length 15–30 mm ........................................................ 30
30. 41 leg-bearing segments (male); body length 15 mm (male)......................... S. paraguayensis (Silvestri, 1895)
- 43–49 leg-bearing segments; body length 28–30 mm ....................................................... 31
31. 45–49 leg-bearing segments; coxosternite of second maxillae with ca. 30 setae........... S. madariagensis (Pereira, 1981)
- 43–47 leg-bearing segments; coxosternite of second maxillae with ca. 16–21 setae................................. 32
32. Female with 43 leg-bearing segments; antennae with three types of specialized sensilla; undivided sternal pore-fields of anterior region of the body extending up to sternite 25; divided sternal pore-fields occur on eight mid-body sternites......................................................................................... S. fieldi (Chamberlin, 1944)
- Female with 45 or 47 leg-bearing segments, male with 43 or 45; antennae with two types of specialized sensilla; undivided sternal pore-fields of anterior region of the body extending up to sternites 18–19; divided sternal pore-fields occur on 21–23 mid-body sternites............................................................. S. elegantulus (Meinert, 1886)
description: Published as part of Pereira, Luis Alberto, 2015, A new schendylid centipede (Myriapoda: Chilopoda: Geophilomorpha) from the Bolivian Amazon Forest, pp. 1-26 in Zootaxa 3905 (1) on pages 18-20, DOI: 10.11646/zootaxa.3905.1.1, http://zenodo.org/record/287644