1. Species Leptosagitta acicula Kasatkina, 2001 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
2. Species Leptosagitta alba Kasatkina & Selivanova, 2003 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
3. Species Leptosagitta eris Kasatkina & Selivanova, 2003 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
4. Species Leptosagitta exigua Kasatkina & Sergeev, 2004 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
5. Species Leptosagitta icis Kasatkina & Sergeev, 2004 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
6. Species Leptosagitta kiyashkoi Kasatkina, 2008 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
7. Species Leptosagitta latyshevi Kasatkina, 2008 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
8. Species Leptosagitta magna Kasatkina, 2008 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
9. Species Leptosagitta ocis Kasatkina & Sergeev, 2004 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
10. Species Leptosagitta pauca Kasatkina, 2008 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)
11. Species Leptosagitta pogodini Kasatkina, 2001 (uncertain > nomen dubium, Description inadequate to distinguish from other known chaetognath species.)

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