Table 3 Diagnostic data on species of the genus Helicotylenchus females in China (data all from original description)
Species | Male | L (mm) | a | c | c’ | V | Head annu | Stylet length (µm) | Tail shape* | Tail annu | Phasmid anter./poster. annu |
|---|---|---|---|---|---|---|---|---|---|---|---|
H. abunaamai | absent | 0.56 (0.52–0.63) | 26.5 (25–29) | 38 (33–44) | 1.3 (1.1–1.4) | 61.5 (59–65) | 4 | 21.6 (21–22) | CC, SH–VP | 9 (7–11) | 1–5/ |
H. africanus | present | 0.62–0.98 | 33–41 | 25–36 | 1.6–2.3 | 58–64 | 4–5 | 27–31 | TAP, BT–VP | 11–18 | 3–8/ |
H. agricola | absent | 0.48–0.61 | 21.5–27 | 27–39 | 1–1.3 | 62–65 | 4–5 | 22–25 | CON, SH–VP | 7–10 | 4–7/ |
H. anhelicus | present | 0.57–0.78 | 26–32 | 33–46 | 1–1.9 | 57–64 | 5 | 29–32 | H | 11 | 4–5/ |
H. apiculus | present | 0.5–0.6 | 21–29 | 30–41 | – | 61–66 | 5–7 | 24 | SP–VP | – | 5/ |
H. australis | absent | 0.67 (0.6–0.8) | 32 (27–37) | 53 (41–69) | 1.2 (0.9–1.6) | 60 (58–61) | – | 21.5 (20–24) | H | 13 (8–10) | 1–11/ |
H. bambesae | absent | 0.55–0.59 | 21–22 | 34–42 | 1–1.3 | 62–63 | 5–6 | 22–24 | VP | 7–9 | 2–7/ |
H. belli | absent | 0.71–0.98 | 27–33 | 27–48 | 1.2–1.6 | 57–62 | 0 | 27–29 | H | 16 | /7 |
H. caipora | present | 0.61–0.73 | 27.9–35.4 | 32.6–51.3 | 1.3–2.0 | 57.3–63.3 | 4–5 | 24.3–27.1 | CC–SRT | 6–11 | 7/2–3 |
H. califormicus | present | 0.58–0.78 | 27–32 | 32–50 | 0.8–1.3 | 59–64 | 4 | 24–27 | L–VP | 8 | 2/ |
H. caroliniensis | absent | 0.68–0.82 | 27–32 | 35–49 | 0.9–1.3 | 61–64 | 4 | 25–28 | IR–H | 12 | 6/ |
H. cavenessei | absent | 0.56–0.7 | 24–32 | 33–64 | 1–1.3 | 56–62 | 4 | 24–27 | IR–H | 13 | 6/ |
H. concavus | absent | 0.64–0.86 | 26–33 | 42–51 | 0.8–1 | 61–65 | 0 | 29–32 | H | 10–12 | 2/3 |
H. cornurus | present | 0.67–0.84 | 25–32 | 37–59 | 0.6–1.2 | 61–65 | 4–5 | 24–27 | IR–VP | 5–11 | 2–10/ |
H. crassatus | absent | 0.72 (0.65–0.78) | 31 (27–34) | 59 (45–71) | 0.79 (0.63–1) | 61–64 | 4 | 28 (26–30) | IR–VP | 3–9 | 6/2 |
H. crenacauda | absent | 0.57–0.77 | 24–29 | 31–52 | 1–1.3 | 59–64 | 4 | 24–28 | IND–VP | 8 | 4–6/ |
H. cuspicaudatus | absent | 0.58–0.72 | 23–30 | 26–33 | 1.6–2.5 | 60–67 | 4 | 25–28 | CON–VA | 19–23 | 5/ |
H. delhiensis | absent | 0.54–0.7 | 21–30 | 43–54 | – | 59–65 | 2–3 | 21–22 | CON–R | 7 | /5 |
H. digitiformis | absent | 0.7–0.8 | 26–31 | 30–39 | 1.1–1.4 | 60–62 | 5 | 27–30 | DIGI | 14–16 | 1–4/ |
H. digonicus | absent | 0.5–0.79 | 23–33 | 41–63 | 0.7–0.9 | 58–64 | 4–5 | 24–28 | H, SH–VP | 4–10 | 1–5/ |
H. dihystera | present | 0.59–0.79 | 27–35 | 35–49 | 0.8–1.2 | 60–65 | 4–5 | 24–29 | CON–SH–VP | 6–12 | 5–11/ |
H. egyptiensis | absent | 0.78 (0.69–0.85) | 29 (26–32) | 29 (25–33) | 1.7 (1.4–1.9) | 60 (59–62) | 4–6 | 26 (24–28) | MUC | 8–15 | 5/2 |
H. erythrinae | present | 0.48–0.61 | 23–26 | 27–34 | 1–1.6 | 60–65 | 4–5 | 23–26 | MUC | 6–12 | 4/2 |
H. exallus | present | 0.61–0.78 | 26–32 | 30–52 | 0.7–1.2 | 59–63 | 4 | 25–28 | CON, SH–VP | 12 | 3–5/ |
H. graminophilus | absent | 0.7–0.84 | 25–32 | 32–40 | – | 64–68 | Indist | 25–29 | BLC | 8–12 | /2–4 |
H. hydrophilus | present | 0.7–0.92 | 26–31 | 35–55 | 0.8–1.2 | 59–65 | 4 | 28–32 | L–VP | 7 | 4–5/ |
H. imperialis | present | 0.48–0.59 | 25–33 | 36–43 | – | 65–71 | 4–5 | 27–29 | R | 8–12 | 4–10/ |
H. indicus | absent | 0.45–0.63 | 23–32 | 33–47 | – | 60–65 | 4 | 21–23 | CC, BL–T | 11 | 6/6 |
H. labiatus | absent | 0.5–0.6 | 21–24 | 35–48 | – | 61–64 | 3–4 | 25 | CC | – | 8/ |
H. labiodiscinus | absent | 0.48–0.66 | 22–29 | 27–42 | 1–1.4 | 58–63 | 0 | 2327 | IR–H | 15 | 7–8/ |
H. leiocephalus | absent | 0.68–0.86 | 25–31 | 31–61 | 0.9–1.5 | 55–63 | 0 | 24–29 | H | 12 | 2/ |
H. lobus | absent | 0.74–0.95 | 30–34 | 34–46 | 1–1.6 | 57–65 | 5 | 28–31 | SH–VP | 9 | 3/2 |
H. martini | present | 0.45–0.58 | 25–31 | 21–31 | 1.5–2.5 | 54–60 | 0 | 22–25 | H–SRT | 10 | /3–12 |
H. membranatus | absent | 0.56 (0.53–0.61) | 24.5 (23–28) | 43 (38–55) | 1.0 (0.8–1.2) | 65 (62–68) | 4 | 26 | SCY, BLC | 7–10 | 2/3 |
H. microlobus | absent | 0.65–0.72 |  | 30–40 |  | 59–63 |  | 28–31 | H |  | 4/2 |
H. microcephalus | absent | 0.55–0.71 | 27–32 | 30–42 | 1.2–1.5 | 61–66 | Indist | 23–27 | TAP–VP | 10 | 5–3/ |
H. minzi | present | 0.68–0.8 | 27–34 | 46–71 | 0.5–1 | 59–64 | 5 | 26–29 | IR–H | 11 | 2–4/ |
H. mucronatus | present | 0.54 (0.49–0.59) | 25.6 (25–28) | 29 (26–33) | 0.55# | 60 (58–63) | 4 | 22 (21–23) | MUC | 9# | 3/ |
H. multicinctus | present | 0.47–0.53 | 24–30 | 35–46 | 0.8–1 | 65–69 | 3–4 | 22–24 | H | 6–12 | 2–6/ |
H. oleae | absent | 0.67–0.93 | 33–36 | 37–45 | 1.1–1.7 | 58–65 | 4–5 | 29–31 | BLC | 16–21 | 4–7/ |
H. paraconcavus | absent | 0.62–0.71 | 24–42 | 39–52 | ? | 64–68 | 0 | 26–29 | CON–R | 12 | 10/8 |
H. pisi | absent | 0.7–0.87 | 17–29 | 28–41 | – | 60–65 | 3–4 | 26–29 | VP | 12 | /3 |
H. platyurus | absent | 0.8–0.93 | 27–32 | 32–46 | 1–1.6 | 57–60 | 4–5 | 28–32 | H | 9–17 | 6/2 |
H. pseudorobustus | absent | 0.6–0.82 | 27–34 | 32–52 | 0.9–1.4 | 59–64 | 4–5 | 26–30 | L–VP | 7–12 | 2–7/ |
H. pteracercus | absent | 0.62–0.73 | 25–29 | 41–68 | 0.6–1.08 | 57.1–65 | 5 | 23.5–25.2 | VP | 10–15 | 16/3 |
H. reynosus | absent | 0.58–0.7 | 24.7–26.4 | 41.2–42 | – | 62.1–65.3 | 4–5 | 25.2–26.2 | CONI–DIGI | 7–9 | 6–5/ |
H. sacchari | present | 0.57–0.69 | 20.5–26.7 | 26–30.7 | – | 65–67.3 | 5–6 | 22–24 | CYL–SRT | 9–11 | 2–0/ |
H. sieversii | present | 0.74 (0.72–0.82) | 24 (22–26) | 40 (38–42) | – | 62 (62–65) | 5 | 32.4 (2–34) | BL–R | 9–10 | 2–1/ |
H. spitsbergensis | absent | 0.79–1.08 | 28–38 | 36–42 | – | 56–68 | 4–5 | 27–31 | TRAP–CON | 13 | 2/3 |
H. truncates | absent | 0.43–0.5 | 20–32 | 34–50 | – | 60–65 | 3–4 | 20–22 | T | – | 7/1 |
H. tumidicaudatus | present | 0.81 (0.72–0.89) | 27 (24–31) | 58 (38–36) | 0.7(0.5–1.0) | 63 (60–67) | Indist | 27 (25–28) | H | – | 12–5/ |
H. tunisiensis | absent | 0.98 (0.88–1.1) | 30.3 (28–33) | 49 (45–55) | 1# | 57.3 (56–58) | 4 | 34 (32–36) | OBT–R | 9# | 7/ |
H. variabilis | present | 0.62 (0.51–0.72) | 25 (23–29) | 46 (35–53) | 1.0(0.8–1.4) | 63 (56–66) | 0 | 25 (23–26) | BR | 12 | 5–10/ |
H. varicaudatus | present | 0.62 (0.58–0.67) | 18–26 | 39–50 | – | 62 (60–63) | 5 | 31 (29–33) | IR–R | 6–11 | 3/2 |
H. willmottae | absent | 0.68 (0.6–0.79) | 31 (28–33) | 47 (40–60) | 1.1 (0.9–1.2) | 63 (59–67) | 5–6 | 26 (24.5–28) | SCY | 12–17 | 1–8/ |
H. zengchengensis | absent | 0.61 (0.5–0.69) | 28 (23–33) | 20 (16–23) | 2.2 (1.9–2.4) | 60 (55–65) | Indist | 26 (24–29) | DC, VP | 19 (14–25) | /4–10 |