{
  "taxon_key": "worms:1649784",
  "slug": "worms-1649784",
  "scientific_name": "Hansarsia difficilis",
  "common_name": null,
  "rank": "Species",
  "rank_order": 43,
  "taxonomic_status": "accepted",
  "status_checked": "2026-08-05",
  "parent_taxon_key": "worms:1649781",
  "lineage": {
    "kingdom": "Animalia",
    "phylum": "Arthropoda",
    "class": "Malacostraca",
    "order": "Euphausiacea",
    "family": "Euphausiidae"
  },
  "ids": {
    "worms_id": 1649784,
    "itis_id": null,
    "gbif_id": null,
    "ncbi_id": null,
    "inat_id": null
  },
  "groups": [],
  "notes": null,
  "direct": {
    "n_obs": 20972,
    "n_samples": 6963,
    "n_datasets": 1,
    "year_min": 1951,
    "year_max": 2019,
    "life_stages": [
      "juvenile",
      "furcilia",
      "calyptopis",
      "adult",
      "furcilia F1",
      "furcilia F2",
      "calyptopis C3",
      "calyptopis C2",
      "furcilia F3",
      "calyptopis C1",
      "damaged",
      "larvae",
      "metanauplius"
    ]
  },
  "rollup": {
    "n_obs": 20972,
    "n_taxa": 1,
    "n_species": 1,
    "n_datasets": 1,
    "year_min": 1951,
    "year_max": 2019
  },
  "datasets": [
    {
      "dataset_key": "cce-lter_euphausiids",
      "n_obs": 20972,
      "n_samples": 6963,
      "year_min": 1951,
      "year_max": 2019,
      "life_stages": [
        "juvenile",
        "furcilia",
        "calyptopis",
        "adult",
        "furcilia F1",
        "furcilia F2",
        "calyptopis C3",
        "calyptopis C2",
        "furcilia F3",
        "calyptopis C1",
        "damaged",
        "larvae",
        "metanauplius"
      ],
      "years": {
        "1951": 290,
        "1952": 202,
        "1953": 495,
        "1954": 592,
        "1955": 880,
        "1956": 481,
        "1957": 409,
        "1958": 686,
        "1959": 818,
        "1960": 374,
        "1961": 196,
        "1962": 240,
        "1963": 307,
        "1964": 229,
        "1965": 233,
        "1966": 355,
        "1967": 52,
        "1968": 165,
        "1969": 2199,
        "1970": 109,
        "1972": 297,
        "1974": 94,
        "1975": 403,
        "1976": 36,
        "1977": 255,
        "1978": 1138,
        "1979": 249,
        "1980": 248,
        "1981": 268,
        "1982": 271,
        "1983": 441,
        "1984": 2073,
        "1985": 229,
        "1986": 260,
        "1987": 125,
        "1988": 238,
        "1989": 322,
        "1990": 280,
        "1991": 348,
        "1992": 224,
        "1993": 228,
        "1994": 215,
        "1995": 213,
        "1996": 191,
        "1997": 236,
        "1998": 294,
        "1999": 294,
        "2000": 276,
        "2001": 208,
        "2002": 194,
        "2003": 89,
        "2004": 90,
        "2005": 87,
        "2006": 94,
        "2007": 67,
        "2008": 58,
        "2009": 173,
        "2010": 92,
        "2011": 59,
        "2012": 105,
        "2013": 77,
        "2014": 73,
        "2015": 59,
        "2016": 114,
        "2017": 97,
        "2018": 113,
        "2019": 63
      },
      "sources": [
        {
          "name": "Nematoscelis difficilis",
          "common_name": null,
          "code": "15",
          "ids": {
            "worms_id": 1649784,
            "itis_id": null,
            "gbif_id": null
          },
          "flags": [
            "synonym"
          ]
        }
      ]
    }
  ]
}