Eucyclops Claus 1893

Figure 2.Eucyclops tziscao sp. n. A, C, D paratype B, E–L holotype from Laguna Tziscao, Chiapas. A Habitus, dorsal B Urosome C Genital double-somite, ventral D Anal somite and caudal ramus, dorsal E Antennule, segments 1–9 F Antennule, segments 10–12 G Antenna, caudal H Antenna, frontal I Mandible J Maxillule, caudal K Maxilla, frontal L Maxilliped, frontal. Scales bars: K = 20 µm; A, C, D, G, H, I, J, L = 50 µm; B, E, F = 100 µm.

Figure 4.Eucyclops tziscao sp. n. A–B paratype C–G allotype from Laguna Tziscao, Chiapas. A Habitus, dorsal B P5, and P6 C Antennule, segments 1–14 D Antennule, segments 15–16 E Antenna, frontal F Antenna, caudal G P4, caudal. Scales bars: B–G = 50 µm; A = 100 µm.

Figure 3.Eucyclops tziscao sp. n. Holotype from Laguna Tziscao, Chiapas. A P1, frontal B Intercoxal sclerite of P1, caudal C P2, frontal D Intercoxal sclerite of P2, caudal E P3, frontal, Exp and Enp separated F Intercoxal sclerite of P3, caudal G P4, caudal H Intercoxal sclerite of P4, frontal I Coxal spine P4 J P5. Scales bars: I= 25µm, J= 50 µm; A–H = 100 µm.

Figure 5.Eucyclops angeli sp. n. A–C paratype D–F holotype from grassland in San Cristóbal de las Casas, Chiapas. A Habitus, dorsal B Second to fourth prosomites, dorsal C Third and fourth prosomites, lateral D Urosome, ventral E Anal somite and one caudal ramus, dorsal F P5. Scale bars 50 µm.

Figure 9.Eucyclops angeli sp. n. Allotype from grassland in San Cristóbal de las Casas, Chiapas. A Coxa, basis, and intercoxal sclerite of P1, caudal B Coxa, basis, and intercoxal sclerite of P2, caudal C Coxa, basis, and intercoxal sclerite of P3, caudal D Enp3P3 E Exp3P3 F Coxa, basis, and intercoxal sclerite of P4, caudal G Intercoxal sclerite of P4, frontal H Enp3P4 I Exp3P4 J Urosome, ventral. Scale bars 50 µm.

Figure 6.Eucyclops angeli sp. n. Holotype from grassland in San Cristóbal de las Casas, Chiapas. A Antennule B Antenna, caudal C Antenna, frontal D Labrum E Mandible F Maxillule, palp separated G Maxilla, proximal and distal endites of the coxa, separated H Maxilliped, frontal. Scale bar 50 µm.

Figure 7.Eucyclops angeli sp. n. Holotype from grassland in San Cristóbal de las Casas, Chiapas. A P1, frontal B Coxa of P1, caudal C P2, frontal, Exp separated D Coxa of P2, caudal E Intercoxal sclerite of P2, caudal F Exp3P3 G Coxa of P3, caudal H Coxa, basis, and intercoxal sclerite of P3, frontal I Intercoxal sclerite P3, caudal J P4, caudal; exopod and coxal spine separated K Intercoxal sclerite of P4, frontal. Scale bar 50 µm.

Figure 8.Eucyclops angeli sp. n. A–B paratype C–F allotype from grassland in San Cristóbal de las Casas, Chiapas. A Habitus, dorsal B Third, and fourth prosomites, lateral C First to fourth urosomites, lateral D Anal somite and caudal ramus, dorsal E Antennule, last two segments separated F Antenna, caudal G Antenna, frontal. Scale bars 50 µm.

Figure 10.Eucyclops festivus Lindberg, 1955; from pond 3 to Laguna Montebello, Chiapas. A First urosomite, and genital double-somite, ventral B Urosome, ventral C Anal somite and caudal ramus, ventral D Urosome, ventral E Anal somite and caudal ramus, ventral. Scale bars 50 µm. A–C female; D–E male.

Figure 11.Eucyclops festivus Lindberg, 1955; from pond 3 to Laguna Montebello, Chiapas. A Antenna, frontal B Antenna, caudal C Antenna, frontal D Antenna, caudal E Coxa, basis, and intercoxal sclerite of P1, frontal F P4, caudal, Exp, and one inner seta separated G Coxa, basis, and intercoxal sclerite of P4, caudal. Scale bars 50 µm. A, B, E, F female; C, D, G male.

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