taxonID	type	description	language	source
831C3D6D623FC193FAFD4E1C7610A3ED.taxon	etymology	Etymology. the name of the species means un-armed in Latin; it refers to the absence of ornamentation on the intercoxal sclerites, the lack of spinules at base of caudal furcal setae, the reduced number of setae on second antennal endopod, and the reduced ornamentation on antennal basis.	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
831C3D6D623FC193FAFD4E1C7610A3ED.taxon	materials_examined	Additional material. One adult female collected 1.02.1935 from Laguna Rincon, Haiti (slide SMNK- 2391; labelled as Microcyclops dubitabilis with A 1, maxilla, P 1 - P 4). One adult female collected from Laguna Rincon, Haiti (slide SMNK- 2392; labelled as Microcyclops dubitabilis with urosome). One adult female collected 05.1986 from Shark river slough, Everglades National Park, Florida, USA (slide 2 of 7, USNM- 251321; labelled as Microcyclops varicans with A 1, A 2, P 1 - P 4, and urosome).	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
831C3D6D623FC193FAFD4E1C7610A3ED.taxon	diagnosis	Diagnosis. Adult female: Dorsal margin of prosomal somites smooth; body length 565 to 615 µm in paratypes. Antennule 12 - segmented, not reaching the distal margin of the first prosomal segment (Fig. 2 A). Fifth pediger nude; cylindrical free segment of P 5 more than 3 times as long as wide, with tiny inner spine; genital double somite expanded proximally. Anal somite with strong spines on ventral distal margin; length to width ratio of caudal ramus less than 3; no spinules at base of lateral and outermost terminal caudal setae (Fig. 2 B). Outer median terminal and inner median terminal caudal setae with heteronomous setulation (Fig. 2 B). Endopodites and exopodites of P 1 - P 4 bisegmented with setation formula as in Table 1, inner basis of P 1 with long spine (long arrow in Fig. 2 C), Enp 2 P 1 with one pore on lateral margin (short arrow in Fig. 2 C). Intercoxal sclererites of P 1 - P 4 unarmed, long setules on inner margin of basipodites of P 1 - P 4, medial spine of Enp 2 P 4 almost as long as the segment and twice the length of the lateral spine (Fig. 2 D). Adult male: unknown.	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
831C3D6D623FC193FAFD4E1C7610A3ED.taxon	description	Description of female. Antennule 12 - segmented; antenna with 3 - segmented Enp armed with 1, 6, and 7 setae respectively (Fig. 3 A, B-position of missing setae in specimens is arrowed). Antennal basis with one group of spinules on the basal-outer margin in caudal view (Fig. 3 A, B); frontal surface of the antennal basis with two rows of tiny spinules (Fig. 3 C). Nine teeth on mandibular gnathobase (Fig. 3 D). Maxillule (Fig. 3 E) with unarmed palp; apical region of maxillular palp with two armed setae plus one smooth seta, three setae (one armed) on lateral lobe, proximal seta smooth (Fig. 3 F). Distal coxal endite of the maxilla with two long setae: the proximal seta with two tiny spines at its base and bifurcated, distal seta with one row of tiny spines along one margin (Fig. 3 G, H). Basipodite with one claw-like projection bearing 5 - 7 strong spines on the concave margin and one long, armed seta on its base; two-segmented Enp bearing 2 and 3 setae respectively (Fig. 3 G). Because of the condition of the microscope slide preparatum we could not verify one basal seta on maxillar Enp 1 (arrowed in Fig. 3 H). Maxilliped with syncoxa (3 setae), basis (2 setae), and two-segmented Enp bearing 1 and 3 setae. Basis of maxilliped with a row of spinules on frontal and caudal surfaces (Fig. 3 I). Basipodites of P 1 − P 3 with long hair-like setules on the inner margins; one row of tiny spinules along the lateral margins of coxa; intercoxal sclerites naked (Fig. 4 A-D). Basis of P 1 with one long spine on inner margin; spine reaching distal middle of Enp 2 P 1 and armed with heteronomous setulation: hair-like setules on its base, tiny spinules distally (Figs 2 C; 4 A, B). One pore on the lateral margin of Enp 2 P 1 (Fig. 4 A, B). Basipodite of P 4 with long hair-like setules on inner margin; P 4 intercoxal sclerite quadrangular (Figs 2 D; 4 E, F), Enp 2 P 4 2.14 + / - 0.2 times as long as wide; and medial spine 1.97 + / - 0.25 as long as lateral spine and 0.91 + / - 0.04 as long as the segment (Figs 2 D; 4 E, F). Fifth pediger nude; P 5 with one cylindrical free segment, 3.23 + / - 0.4 times as long as wide, bearing one tiny medial spinule. Free segment 0.27 + / - 0.01 times as long as distal seta (Figs 2 B; 4 G, H). Hyaline fringes of urosomites serrated (Fig. 2 B), petaloid or rounded (Fig. 5 A, C-F). Length to width ratio of caudal ramus 2.54 + / - 0.44, inner margin naked; no spinules at base of lateral caudal (II) and outermost terminal caudal setae (III) (Fig. 2 B). Only 5 - 8 strong spinules present ventrally on the distal margin of anal somite, no spinules dorsally (Fig. 5 A, C-E). Lateral caudal seta (II) inserted at 58.6 + / - 3.9 % of caudal ramus. Dorsal caudal seta (VII) 0.9 + / - 0.1 times as long as caudal ramus, and innermost terminal caudal seta (VI) 1.4 + / - 0.04 times as long as caudal rami (Fig. 2 B). Relative lengths of terminal caudal seta from outermost caudal seta to innermost caudal seta is 1.0: 4.9: 7.3: 1.6 (Figs 2 B; 5 B, C). Outer median terminal caudal seta (IV) and inner median terminal caudal seta (V) with heteronomous setulation: proximally with spinule-like setules and distally with long and fine setules (Figs 2 B; 5 B, C).	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
EA276BFA1BEA7325C9A6C529E175D339.taxon	description	Description of female. Antennule 11, or 12 - segmented (intra- and interpopulation variation); 3 - segmented endopod of antenna bearing 1, 9, and 7 setae, respectively (Fig. 6 A, B). Antennal basis with three long rows of spinules on caudal surface (Fig. 6 B): two basal rows, and one median row; frontal surface of antennal basis with two rows of tiny spinules (Fig. 6 C). Labrum with 6 − 7 teeth between two curved lateral teeth, and 3 − 4 strong spinules on each round projections of the plate (Fig. 6 D). Eight teeth on mandibular gnathobase (Fig. 6 E). Maxillule as in Fig. 6 F, maxillular palp with one armed seta plus two smooth setae apically, three smooth setae on lateral lobe, and one proximal nude seta (Fig. 6 G, H). Maxilla with armed setae on distal coxal endite: proximal seta with one long spine-like setule at its base and bifurcated apically, distal seta with one row of tiny spines along inner margin (Fig. 6 I-K, M). Basipodite with claw-like projection bearing 6 − 8 thin spinules on concave margin and one long seta on its base; this seta armed with two rows of spinules (long spinules on inner margin, and short spinules on outer margin) (Fig. 6 I-L). Maxilla with two-segmented Enp bearing 2 and 3 setae respectively (Fig. 6 I-L). Maxilliped with syncoxa (3 setae), basis (2 setae), and two-segmented Enp bearing 1 and 3 setae, respectively. Basis of the maxilliped nude, two spinules present on frontal surface of Enp 1 (Fig. 6 N). Dorsal margin of prosomal somites smooth (Fig. 7 A). Basis of P 1 medially hairy. One short spine present on inner margin, spine biserially armed with spinule-like setules (homonomous ornamentation) and reaching slightly beyond distal margin of the Enp 1 P 1. Intercoxal sclerite of P 1 naked (Fig. 7 B-D). Pore on lateral margin of Enp 2 P 1 sometimes present (interpopulation variation). Inner margin of basis of P 2 and P 3 hairy, and intercoxal sclerites of these swimming legs naked (unfigured). Inner margin of P 4 basis with short hairs; intercoxal sclerite naked, rectangular (Fig. 7 E-H), Enp 2 P 4 1.9 + / - 0.1 times as long as wide; medial spine 1.8 + / - 0.3 times as long as lateral spine, and 0.8 + / - 0.1 times as long as segment. Apical spines of Enp 2 P 4 are subequal only in female USNM- 251322 (Fig. 7 E). Fifth pediger nude; P 5 free segment cylindrical, 3.6 + / - 0.8 times as long as wide, without inner spine. Free segment 0.4 + / - 0.1 times the length of the distal seta (Figs 7 I-K; 8 C). Length to width ratio of caudal ramus 2.4 + / - 0.2, inner margin naked. With or without spines at base of seta II (intrapopulation variation), spinules always present at base of setae III. Distal margin of anal somite bearing spinules: medial spinules are longer than lateral ones on ventral surface; spinule row can extend laterally or dorsally (Fig. 8 A-C). Seta II inserted at 71 + / - 5.7 % of caudal ramus. Seta VII 1.02 + / - 0.3 times as long as caudal ramus, and seta VI 1.4 + / - 0.2 times longer than caudal ramus. Relative lengths of terminal caudal seta from outermost caudal seta to innermost caudal seta are 1.0: 4.9: 7.1: 1.6 (Fig. 8 A, C). Seta IV and seta V with heteronomous setulation: proximally with spine-like setules and distally with long and fine setules (Fig. 8 A-C). Sixth leg with two medial spines and one lateral seta (Fig. 8 D).	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
1C9918BDFDB5D5B9BBA4B2181711EA73.taxon	description	Description of female. Antennule 12 - segmented (Fig. 9 A). Antenna with 3 - segmented endopod with 1, 9, and 7 setae, respectively (Fig. 9 F). Frontal surface of antennal basis with one basal row of spinules arranged in arc next to medial (inner) margin, and one median row of spinules next to lateral (outer) margin. (Fig. 9 D, E). Caudal surface of antennal basis with two basal rows of spinules arranged in arc, plus two rows of long spinules on outer margin (Fig. 9 F). Labrum with 7 marginal teeth between two lateral curved teeth, and two rows of long spinules (6) overhanging distal margin (Fig. 9 B, C). Gnathobase of the mandible with eight teeth (Fig. 9 G). Maxillular palp with three apical setae, three setae on lateral lobe, and one proximal seta. The proximal seta armed on both margins, one seta on lateral lobe and one apical seta with setules (Fig. 9 H). Distal coxal endite of the maxilla with two long setae: the proximal seta with two long basal spinules and bifurcated apically, distal seta smooth (Fig. 9 I). Basipodite with one claw-like projection bearing thin spinules on concave margin, and one long smooth seta on its base. One-segmented Enp bearing 5 setae (Fig. 9 I). Maxilliped with syncoxa (2 setae), basis (2 setae), and two-segmented Enp bearing 1 and 3 setae, respectively. Ornamentation of setae on syncoxa and Enp 1 variable (intrapopulation variation, arrowed in Fig. 9 J). Syncoxa and basis of maxilliped with a row of spinules on caudal surface next to lateral margin (Fig. 9 J). Dorsal margin of prosomal somites slightly serrated (Fig. 10 A). Basis of P 1 − P 3 with pilose inner margin. Intercoxal sclerites of P 1 - P 3 with one row of short spinules (Fig. 10 B-G), in some populations the sclerite of P 3 with two rows of spinules (Fig. 10 H). Enp 2 P 1 with two pores on lateral margin (Fig. 10 C). Because of the condition of the specimen in slide USNM- 222299, it was not possible to verify the presence of spinules on the sclerite as well as the pores on the second endopodal segment of P 1 (Fig. 10 B). P 1 basis with long medial spine reaching distal third of Enp 2 P 1. Spine ornamented with long setules near base and with short spinule-like setules more distally (Fig. 10 B, C). Inner margin of P 4 basis with strong spinules. Intercoxal sclerite rectangular, and ornamented with two rows of spinules (Fig. 10 I, K). Enp 2 P 4 2.2 + / - 0.1 times as long as wide; medial spine 1.5 + / - 0.1 times as long as the lateral spine, and 0.6 + / - 0.06 times as long as segment (Fig. 10 J, K). Sixth leg with one long seta plus two short spines (Fig. 10 L). Fifth pediger nude (Fig. 11 A). Urosomal somites with serrated hyaline fringes (Fig. 11 B, C). Fifth leg with one cylindrical free segment 3.8 + / - 1.4 times as long as wide; tiny spinule present on inner margin. P 5 free segment 0.3 + / - 0.1 times the length of the distal seta (Fig. 11 C). Distal margin of anal somite with a continuous row of strong spinules on ventral and dorsal surfaces (Fig. 11 B, C). Caudal ramus 3.6 + / - 0.4 times longer than wide, inner margin naked. Spinules present at base of caudal setae II and III; seta II inserted at 69 + / - 3.2 % of the caudal ramus (Fig. 11 C). Seta VII 0.7 + / - 0.1 times as long as caudal ramus, seta VI 0.8 + / - 0.1 times as long as caudal ramus. Relative lengths of terminal caudal seta from outermost caudal seta to innermost caudal seta: 1.0: 5.7: 9.5: 1.8 (Fig. 11 C, D). Seta IV and seta V with homonomous setulation, with long and fine setules at whole length (Fig. 11 D); inner median terminal caudal seta (V) with interrupted row of setules along the proximal, lateral margin (Fig. 11 E, F).	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
279BBF967B344048BA6FE7376BA86106.taxon	description	Description of female. This description is a complement to the original description of Fiers et al. (2000). Frontal surface of antennal basis with one basal, inner row of spinules arranged in an arc, and one longitudinal row of spinules near lateral margin (Fig. 12 A). Antenna with three-segmented endopod bearing 1, 9, and 7 setae, respectively (Fig. 12 B). Caudal surface of antennal basis with two rows of long spinules next to exopodal seta, one group of long spinules at basal position, one basal row on inner margin and another basal row on outer margin (Fig. 12 B). Nine teeth on the distal margin of the labrum (Fig. 12 C). Eight teeth present on gnathobase of mandible (Fig. 12 D). Maxillular palp with three apical setae (one of these setae armed with long setules); lateral lobe with three setae, the longer seta armed; proximal seta nude (Fig. 12 E). Maxillar basipodite with one claw-like projection bearing thin spines on concave margin and one long seta with one (Fig. 12 F) or four tiny spinules (Fiers et al. 2000); maxilla with two-segmented Enp bearing 2 and 3 setae on first and second endopodal segments, respectively (Fig. 12 F). Maxilliped with syncoxa (3 setae), basis (2 setae), and two-segmented Enp bearing 1 and 3 setae. Syncoxa and basis of maxilliped with rows of spinules on caudal surface (Fig. 12 G). Two pores on lateral margin of second endopodal segment of P 1, very long spinules present at insertion of apical spine of Enp 2 P 1. Long medial spine of P 1 basis with heteronomous setulation (Fig. 13 A). Inner margin of P 1 − P 3 basis with long hair-like setae (Fig. 13 A, B), inner margin of P 4 basis with one row of tiny spinules and one row of long setules (Fig. 13 C). Intercoxal sclerites of all swimming legs ornamented on caudal surface: P 1 with one row of spinules and P 2 to P 4 with two rows of spinules (Fig. 13 A-C). Enp 2 P 4 2.5 + / - 0.1 times as long as wide; medial spine is 2.0 + / - 0.1 times as long as lateral spine, and 0.8 + / - 0.1 times as long as the segment. Fifth pediger with rows of spinules on ventro-lateral surfaces. Fifth leg with tiny spinule on inner margin (Fig. 13 D); cylindrical free segment 3.7 + / - 0.1 times longer than wide and 0.45 + / - 0.01 times as long as distal seta of P 5. Caudal ramus 5.9 + / - 0.4 times longer than wide. Seta VII 0.5 + / - 0.1 times as long as caudal ramus, seta VI 0.5 + / - 0.05 times as long as caudal ramus. Relative lengths of terminal caudal seta from outermost to innermost caudal seta, 1.0: 6.5: 10.4: 2.0. Seta IV and seta V with homonomous setulation, bearing long and fine setules (Fig. 13 E).	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
C2CD645B8E9022E4BBD12B4379068E18.taxon	description	Description of female. The following description is complementary to the original description of Dussart (1984). Antennule 12 - segmented. Dorsal margin of prosomal somites 1 to 3 smooth (unfigured); hyaline fringe of fifth pediger serrated dorsally (Fig. 14 A). Intercoxal sclerite of P 1 smooth, inner margin of P 1 basis with long hair-like setules, without spine on inner margin (Fig. 14 B). Enp 2 P 1 with one pore on lateral margin. Row of long spinules present at base of apical spine and lateral seta of Enp 2 P 1 (Fig. 14 C). Inner margin of P 4 basis with long setules, intercoxal sclerite quadrangular, with one row of long spinules on caudal surface (Fig. 14 D). Enp 2 P 4 2.2 times as long as wide; medial spine 1.4 times as long as lateral spine, and 0.8 times as long as segment. Anal somite with continuous row of spinules along distal margin (ventrally and dorsally), but on ventral surface medial spinules are longer and stronger than lateral spinules (Fig. 14 E). No spinules at base of caudal seta II, but spinules present at base of caudal seta III; length to width ratio of caudal ramus 2.7. Relative lengths of terminal caudal setae from outermost to innermost seta, 1.0: 6.1: 8.9: 2.1. Caudal setae IV, and V with homonomous setulation, bearing long and fine setules (Fig. 14 E). Dorsal caudal seta (VII) 0.7 times as long as caudal rami, and innermost caudal seta (VI) 1.2 times longer than caudal rami. Lateral caudal seta (II) inserted at 75.5 % of caudal ramus length.	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
6901C32FF6E2384A8F4C462D6673D280.taxon	description	Description of female. Dorsal posterior margin of second prosomal somite with crenulated hyaline fringe (Fig. 15 A, B), posterior margin of fourth prosomal somite wrinkled (Fig. 15 B). Caudal surface of antennal basis with three oblique rows of tiny spinules near inner margin and two basal (proximal) rows of long spinules near outer margin (Fig. 15 C, D, F). Antenna with three-segmented endopod bearing 1, 9, and 7 setae, respectively. Frontal surface of antennal basis with three rows of spinules: one proximal oblique, one near lateral (outer) margin in middle of segment, and one next to exopod seta (Fig. 15 E). Mandible with nine teeth on gnathobase (Fig. 15 G). Maxillular palp with two armed and one naked setae apically; one armed seta plus two nude setae on lateral lobe, proximal seta with tiny spinules (Fig. 15 H). Distal coxal endite of maxilla with two long setae: proximal seta with two long, basal setules and bifurcated apically; distal seta armed with a continuous row of tiny spinules along one (inner) margin (Fig. 15 I). Basipodite with claw-like projection bearing two stout teeth followed by a row of tiny spinules, and one long smooth seta on its base; two-segmented Enp bearing 2 and 3 setae, respectively (Fig. 15 I). Maxilliped with a row of spinules in syncoxa, Bsp, and Enp 1, on frontal view (Fig. 15 J). Inner margin of basipodite with long and fine hairs in P 1 − P 3 (Fig. 16 A, B). One pore present on lateral margin of Enp 2 P 1. Spine absent on inner margin of BspP 1 (Fig. 16 A). Inner margin of BspP 4 with long. Inner margin of BspP 4 with long spinules (Fig. 16 D). Intercoxal sclerites naked in P 1 and P 2 (Fig. 16 A, B). Usually one distal row or sometimes two rows of spinules present on intercoxal sclerite of P 3 (Fig. 16 C). P 4 sclerite with two rows of spinules (Fig. 16 D): spinules in distal row larger and stronger than those in proximal row (Fig. 16 D). Medial apical spine of Enp 2 P 4 1.3 + / - 0.1 times as long as lateral apical spine, and 0.7 + / - 0.03 times as long as segment; length to width ratio of segment 2.5 + / - 0.1. Strong spinules present (Figs 16 E, 17 D) or absent (Fig. 17 A) on fifth pediger near base of lateral seta of P 5. This character shows both inter- and intrapopulation variation; in one population, the females do not have spinules next to lateral seta (MNHN-Cp 7296, unfigured here), while the males of the same population do (Fig. 17 E). Free segment of fifth leg 2.5 + / - 0.2 times longer than wide, with relatively large spinule in distal position (Figs 16 E, 17 A); free segment 0.4 + / - 0.08 times as long as apical seta. Distal margin of anal somite with continuous row of strong spinules on ventral and dorsal surfaces (Figs 17 B, F). Caudal ramus 3.7 + / - 0.3 times longer than wide, inner margin naked. Spinules present at base of caudal seta III. Caudal seta II inserted at 71.1 + / - 1.15 % of caudal ramus length (Fig. 17 B). Seta VII and VI 0.5 + / - 0.1 and 0.8 + / - 0.1 times as long as caudal ramus, respectively. Relative lengths of terminal caudal seta from outermost to innermost, 1.0: 4.9: 7.1: 1.3 (Fig. 17 B). Caudal setae IV and V with homonomous setulation, with hair-like setules only (Fig. 17 B).	en	Gutierrez-Aguirre, Martha Angelica, Cervantes-Martinez, Adrian (2016): Taxonomic evaluation of eleven species of Microcyclops Claus, 1893 (Copepoda, Cyclopoida) and description of Microcyclopsinarmatus sp. n. from America. ZooKeys 603: 33-69, DOI: http://dx.doi.org/10.3897/zookeys.603.7480, URL: http://dx.doi.org/10.3897/zookeys.603.7480
