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FIGURE 17 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 17. Developmental stages of Arcticotantulus kristenseni sp. nov. (LM). A. Parthenogenetic female (arrow points at head of female) attached to host (ZMUC CRU4872). B. Parthenogenetic female with embryos inside (enlargement of A). C. Living female in late stage of development, probably a sexual female (see Discussion), with developing abdomen (arrow) (ZMUC CRU4873). D. Live male in late stage of development (LM) attached to cephalon of harpacticoid host (ZMUC CRU4877). E. Close-up of D. Abbreviations: cephalic stylet in larval head (cs), male antennular aesthetascs (aes).

FIGURE 15 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 15. Live tantulus larvae and some developing males of Arcticotantulus kristenseni sp. nov. (LM). Animals in A, B, D, F were alive when the pictures were taken. A. Tantulus larva attached dorsally to harpacticoid host (arrow) (ZMUC CRU4882). B. Three tantulocaridans at different stages of development attached to harpacticoid host (arrows); the most developed tantulus has a male inside (ZMUC CRU4885). C. Detached tantulus larva, ventral view (ZMUC CRU4887). D. Attached tantulus larva, lateral view (ZMUC CRU4884). E. Detached tantulus larva, ventral view (same specimen as in C). F. Attached tantulus larva (close-up of specimen in A). G. Lateral view of detached tantulus larva (ZMUC CRU4887).

FIGURE 16 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 16. Live females (most likely parthenogenetic) of Arcticotantulus kristenseni sp. nov. in early stages of development attached to harpacticoid host (LM). A. Very early female (ZMUC CRU4875). B. Later female (ZMUC CRU4883). C. Even later female (ZMUC CRU4875). D. Close-up of anterior part of cephalon in B showing protruding organ (arrow).

FIGURE 14 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 14. Thoracopods and urosome of Arcticotantulus kristenseni sp. nov. (SEM), tantulus with developing male inside. All photos are of same specimen (ZMUC CRU4891). A. Thoracopods 1 to 6 (left side) and urosome. B. Thoracopods 1 and 2 (left side). C. Thoracopods 2 and 3 (left side). D. Thoracopods 4 to 6 (left side). E. Urosome (and abdomen). Abbreviations: abdomen (abd), thoracopods 1 to 6 (thp1–6), thorax somite 7 (t7), urosome (uro).

FIGURE 13 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 13. Thoracopods of tantulus of Arcticotantulus kristenseni sp. nov. with male inside in early state of development (SEM), all photos of same specimen (ZMUC CRU4891). A. Ventro-lateral view. B. Close-up of thoracopods in A. C. Thoracopods 1 and 2 (enlargement of B). Abbreviations: endopod (en), exopod (ex), thoracopods 1 to 6 (thp 1–6).

FIGURE 11 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 11. Arcticotantulus kristenseni sp. nov. at different stages of development (SEM) (ZMUC CRU4891). A. Early tantulus that has begun to develop a male inside. B. Developing male. C. Oral disc of detached parthenogenetic female, ventral view.

FIGURE 9 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 9. Arcticotantulus kristenseni sp. nov. in different stages of development attached to harpacticoid copepod hosts (SEM) (ZMUC CRU4891). A. Three tantulocaridans on one host: one developing male (ma) and two late tantulus larvae (tan). B. One tantulocarid attached to a copepod host: one developing male (ma). C. Three tantulocaridans on one host: a parthenogenetic female (fe), a developing male (ma), and a tantulus larva (tan).

FIGURE 8 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 8. Harpacticoid host with attached developing male of Arcticotantulus kristenseni sp. nov. within trunk sac of tantulus larva (SEM) (ZMUC CRU4891). A. Dorsal view of host and developing tantulocarid male. B. Dorsal view of developing male, enlargement of A. C. Cephalon and thoracic tergites, enlargement of B. Abbreviations: thoracic somites 1 to 6 (t1-t6)

FIGURE 7 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 7. Adults of Arcticotantulus kristenseni sp. nov. A. Male developing inside the trunk sac of a tantulus larva, lateral view (drawn from ZMUC CRU4877). B. Parthenogenetic female with eggs, lateral view (drawn from ZMUC CRU4872). Abbreviations: aesthestascs (aes), cephalic stylet (cs), eggs (egg), pores in head shield (ph), protruding organ (po), tubular structures (ts), umbilical cord-like organ (uc).

FIGURE 6. Thoracopods 5 and 6 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 6. Thoracopods 5 and 6 of tantulus larva of Arcticotantulus kristenseni sp. nov., right and left side, seen from anterior (drawn from ZMUC CRU4887). A. Thoracopods 5. B. Thoracopods 6. Abbreviations: endopod (en), exopod (ex), medial endite (me), protopod (pro), spine on protopod (ps), spine on exopod (sex), spine on medial endite (sme), spatulate process (sp). The denticles on the setae, the spines on the exopods, and the spines on the protopods were not seen in the light microscope, but only observed on pictures obtained by SEM.

FIGURE 5. Thoracopods 1 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 5. Thoracopods 1 to 4 of tantulus larva of Arcticotantulus kristenseni sp. nov., right and left, seen from anterior (drawn from ZMUC CRU4887). A. Thoracopods 1. B. Thoracopods 2. C. Thoracopods 3. D. Thoracopods 4. E. Thoracopods 5. F. Thoracopods 6. Abbreviations: endopod (en), exopod (ex), medial endite (me), protopod (pro), spine on protopod (ps), spines on medial endite (sme), spine on exopod (sex), spatulate process (sp). The denticles on the setae, the spines on the exopods, and the spines on the protopods were not seen in the light microscope, but only observed on pictures obtained by SEM.

FIGURE 3 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 3. Tantulus larva of Arcticotantulus kristenseni sp. nov., external morphology (drawn from ZMUC CRU4882 and ZMUC CRU4889). A. Dorsal view. B. Lateral view. C. Urosome and urosomal setation, dorsal view. Abbreviations: caudal rami (cr), 'w-shaped' serrated edge (sew), serrated edges (se), long setae (ls), oral disc (od), short setae (ss), thoracic somites 1 to 7 (t1-t7), transverse lamellae (tl). See text for pore nomenclature. Setae on caudal rami are not shown at full length, but are cut off as indicated by the small bars.

FIGURE 1 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 1. Localities where mud samples were collected, Iqpik and Kuanit. x marks the sampling stations. Arcticotantulus kristenseni sp. nov. were only found at the fishing ground at Iqpik.

FIGURE 4 in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 4. Tantulus larva of Arcticotantulus kristenseni sp. nov., internal morphology (drawn from ZMUC CRU4882 and ZMUC CRU4887). A. Lateral view. B. Cephalon, internal structures, dorsal view. C. Cephalon of A, enlarged, internal structures, lateral view. Abbreviations: caudal rami (cr), cephalic stylet (cs), globular bodies (gb), protruding organ (po), oral disc (od), swellings on tubular structures (sts), transverse lamellae (tl), tubular structures (ts).

FIGURE 2. Harpacticoid copepod with a in The tantulocarid genus Arcticotantalus removed from Basipodellidae into Deoterthridae (Crustacea: Maxillopoda) after the description of a new species from Greenland, with first live photographs and an overview of the class

FIGURE 2. Harpacticoid copepod with a tantulus larva (ZMUC CRU4884) of Arcticotantulus kristenseni sp. nov. attached to the posterior abdominal somite. This attachment site is typical, but attachment can occur everywhere on the host. Arrow points at larval head.

Figure 7 in Diversity of freshwater copepods (Maxillopoda: Copepoda: Calanoida, Cyclopoida) from Chiapas, Mexico with a description of Mastigodiaptomus suarezmoralesi sp. nov.

Figure 7. Mastigodiaptomus suarezmoralesi sp. nov. (A, B) Female, (A) genital field; (B) genitaldouble somite, ventral. (C–F) Male, (C) right antennule, antepenultimate segment; (D) right basis, fifth leg; (E) aculeus; (F) terminal spine of right Exp2. Measurements in µm.

Figure 6 in Diversity of freshwater copepods (Maxillopoda: Copepoda: Calanoida, Cyclopoida) from Chiapas, Mexico with a description of Mastigodiaptomus suarezmoralesi sp. nov.

Figure 6. Mastigodiaptomus suarezmoralesi sp. nov., male from Laguna de Montebello 1, Chiapas, (A) Habitus, dorsal; (B) habitus, right side; (C) rostral points; (D) left thoracic wing; (E) right thoracic wing (dorsal seta arrowed); (F) urosome, dorsal; (G) right antennule, last three segments separated; (H) right antennule, segments 8–16; (I) fifth leg caudal, Enps and left Exp2 separated. Scale bars 50 µm.

Figure 3 in Diversity of freshwater copepods (Maxillopoda: Copepoda: Calanoida, Cyclopoida) from Chiapas, Mexico with a description of Mastigodiaptomus suarezmoralesi sp. nov.

Figure 3. Aglaodiaptomus clavipes (Schacht, 1897). Male from Laguna Tziscao, Chiapas. (A) Habitus; (B) fifth leg, caudal (left Exp1 arrowed); (C) fifth leg, left Enp; (D) fifth leg, right Enp; (E) right antennule, segments 8–14; (F) right antennule, antepenultimate segment. Measurements in µm.

Figure 1 in Diversity of freshwater copepods (Maxillopoda: Copepoda: Calanoida, Cyclopoida) from Chiapas, Mexico with a description of Mastigodiaptomus suarezmoralesi sp. nov.

Figure 1. Sampling localities in Chiapas, Mexico. Marks represent the area where the new records, range extension and new species were collected. Square = Acanthocyclops einslei; circle = Metacyclops cushae; asterisk = Aglaodiaptomus clavipes and Mastigodiaptomus suarezmoralesi.

Figure 2 in Diversity of freshwater copepods (Maxillopoda: Copepoda: Calanoida, Cyclopoida) from Chiapas, Mexico with a description of Mastigodiaptomus suarezmoralesi sp. nov.

Figure 2. Aglaodiaptomus clavipes (Schacht, 1897). Female from Laguna Tziscao, Chiapas. (A) Habitus; (B) right antennule, segments 8–22; (C) urosome, dorsal; (D) Enp and Exp, fifth leg; (E) Exp2, and Exp3 (arrowed), fifth leg; (F) genital somite, ventral; (G) genital somite, lateral. Measures in photos are in µm. Scale bars 50 µm.