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<treatment id="03D387B4FF9AFFD7FF1BF83AB798DFDC" ID-DOI="http://doi.org/10.5281/zenodo.5970425" ID-GBIF-Taxon="142225598" ID-Zenodo-Dep="5970425" LSID="urn:lsid:plazi:treatment:03D387B4FF9AFFD7FF1BF83AB798DFDC" httpUri="http://treatment.plazi.org/id/03D387B4FF9AFFD7FF1BF83AB798DFDC" lastPageId="16" lastPageNumber="121" pageId="15" pageNumber="120">
<subSubSection id="C3606529FF9AFFC8FF1BF83AB70ADFEC" box="[151,1284,1921,1946]" pageId="15" pageNumber="120" type="nomenclature">
<paragraph id="8BC536A2FF9AFFC8FF1BF83AB70ADFEC" blockId="15.[151,1284,1921,1946]" box="[151,1284,1921,1946]" pageId="15" pageNumber="120">
<heading id="D08D81CEFF9AFFC8FF1BF83AB70ADFEC" bold="true" box="[151,1284,1921,1946]" fontSize="10" level="2" pageId="15" pageNumber="120" reason="2">
<emphasis id="B90EEAB0FF9AFFC8FF1BF83AB70ADFEC" bold="true" box="[151,1284,1921,1946]" pageId="15" pageNumber="120">
Key to larvae of North American
<taxonomicName id="4C7A4D21FF9AFFC8FDA4F83AB061DFEC" ID-CoL="62FJ6" ID-ENA="189838" authorityName="Leach" authorityYear="1815" box="[552,623,1921,1946]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="15" pageNumber="120" phylum="Arthropoda" rank="genus">
<emphasis id="B90EEAB0FF9AFFC8FDA4F83AB061DFEC" bold="true" box="[552,623,1921,1946]" italics="true" pageId="15" pageNumber="120">Baetis</emphasis>
</taxonomicName>
species (larvae of
<taxonomicName id="4C7A4D21FF9AFFC8FCC5F839B1DADFEC" authorityName="McDunnough" authorityYear="1925" box="[841,980,1921,1946]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="15" pageNumber="120" phylum="Arthropoda" rank="species" species="rusticans">
<emphasis id="B90EEAB0FF9AFFC8FCC5F839B1DADFEC" bold="true" box="[841,980,1921,1946]" italics="true" pageId="15" pageNumber="120">B. rusticans</emphasis>
</taxonomicName>
and
<taxonomicName id="4C7A4D21FF9AFFC8FB83F839B68DDFEC" box="[1039,1155,1921,1946]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="15" pageNumber="120" phylum="Arthropoda" rank="species" species="diablus">
<emphasis id="B90EEAB0FF9AFFC8FB83F839B68DDFEC" bold="true" box="[1039,1155,1921,1946]" italics="true" pageId="15" pageNumber="120">B. diablus</emphasis>
</taxonomicName>
unknown)
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C3606529FF9AFFD7FF1BF873B798DFDC" lastPageId="16" lastPageNumber="121" pageId="15" pageNumber="120" type="key">
<keyStep id="308E2E07FF9AFFD7FF1BF873B795D92B" lastPageId="16" lastPageNumber="121" pageId="15" pageNumber="120">
<paragraph id="8BC536A2FF9AFFC8FF1BF873B795DFA8" blockId="15.[151,1435,1992,2014]" box="[151,1435,1992,2014]" pageId="15" pageNumber="120">
<keyLead id="308B9597FF9AFFC8FF1BF873B795DFA8" box="[151,1435,1992,2014]" pageId="15" pageNumber="120">1 Labial palp short and broad, distinctly convex laterally, and with small medial projection on segment 2 (Figs. 1921); prono-</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF6DFF2CB795D92B" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
tum usually with submedian dark, inverted U-shaped markings (Fig. 53), but in darkly colored specimens only pale area within and lateral to U may be evident (Fig. 12); femora usually with large median quadrate dark marking (Fig. 34), but may be more elongate in western specimens (Figs. 35, 36); pedicels, paraprocts and abdominal sterna without robust setae (
<taxonomicName id="4C7A4D21FF85FFD7FABAFF69B31AD972" ID-CoL="68C2P" baseAuthorityName="Linnaeus" baseAuthorityYear="1761" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="fuscatus">
<emphasis id="B90EEAB0FF85FFD7FABAFF69B31AD972" italics="true" pageId="16" pageNumber="121">Baetis fuscatus</emphasis>
</taxonomicName>
group).......................................................................................... 2
<keyLead id="308B9597FF85FFD7FF1BFEB6B795D92B" pageId="16" pageNumber="121">- Labial palp usually more elongate, with or without a distinct medial projection on segment 2, and only slightly convex laterally (Figs. 17,18, 2227); pronotum variable (Figs. 51, 52, 54), rarely with inverted dark U-shaped markings; femora variable; pedicels, paraprocts and abdominal sterna with (Figs. 31, 33) or without robust setae................................ 4</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFEDFB795DA5C" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFEDFB795D9A4" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFEDFB795D9A4" pageId="16" pageNumber="121">
2 Abdominal terga 24, 68 each with three small, similarly sized round, pale markings near posterior margins (Figs. 15, 16), although markings may be reduced (Fig. 14) or abdominal terga nearly uniformly dark with submedian pair of pale parenthesis-shaped markings (Waltz
<emphasis id="B90EEAB0FF85FFD7FE63FE24B02FD9C2" box="[495,545,415,436]" italics="true" pageId="16" pageNumber="121">et al.</emphasis>
1996: Fig. 1); caudal filaments with a median dark band; east of Rocky Mountains (
<taxonomicName id="4C7A4D21FF85FFD7FAC0FE24B32AD9A4" ID-CoL="KCYP" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="intercalaris">
<emphasis id="B90EEAB0FF85FFD7FAC0FE24B32AD9A4" italics="true" pageId="16" pageNumber="121">B. intercalaris</emphasis>
</taxonomicName>
and synonym; comprised of at least 6 BINs).....................................
<taxonomicName id="4C7A4D21FF85FFD7FB1EFE06B74CD9A4" ID-CoL="KCYP" box="[1170,1346,445,466]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="intercalaris">
<emphasis id="B90EEAB0FF85FFD7FB1EFE06B74CD9A4" box="[1170,1346,445,466]" italics="true" pageId="16" pageNumber="121">Baetis intercalaris</emphasis>
</taxonomicName>
complex
</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFE61B795DA5C" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFE61B795DA5C" pageId="16" pageNumber="121">- Abdominal terga with two large sublateral pale markings near posterior margin and a small anteromedian pale marking (Figs. 11, 12) or with sublateral and anteromedian marking fused to form crown shaped pale marking (Figs. 8, 9, 13); caudal filaments with or without dark median band................................................................... 3</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFD8AB795DB62" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFD8AB795DACB" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFD8AB795DACB" pageId="16" pageNumber="121">
3 Caudal filaments with dark median band (Fig. 11); abdominal terga usually with anteromedian and sublateral markings separate and with tergum 5 distinctly paler than adjacent terga (Figs. 11, 12) and with distinct subquadrate dark marking on femora (Fig. 34); specimens from Pacific Northwest with some fusion of sublateral and anteromedian spots and with tergum 5 similarly marked to adjacent segments (s. 8, 9) and with variably sized elongate dark markings on femora (Fig. 35, 36); widespread (
<taxonomicName id="4C7A4D21FF85FFD7FEA1FD1CB3A5DACA" ID-CoL="KCY6" box="[301,427,679,700]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="flavistriga">
<emphasis id="B90EEAB0FF85FFD7FEA1FD1CB3A5DACA" box="[301,427,679,700]" italics="true" pageId="16" pageNumber="121">B. flavistriga</emphasis>
</taxonomicName>
,
<taxonomicName id="4C7A4D21FF85FFD7FE3AFD1CB02FDACA" ID-CoL="KD28" authorityName="McDunnough" authorityYear="1923" box="[438,545,679,700]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="phoebus">
<emphasis id="B90EEAB0FF85FFD7FE3AFD1CB02FDACA" box="[438,545,679,700]" italics="true" pageId="16" pageNumber="121">B. phoebus</emphasis>
</taxonomicName>
, and likely
<taxonomicName id="4C7A4D21FF85FFD7FD1EFD1CB10BDACA" ID-CoL="KD2K" authorityName="McDunnough" authorityYear="1925" box="[658,773,679,700]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="rusticans">
<emphasis id="B90EEAB0FF85FFD7FD1EFD1CB10BDACA" box="[658,773,679,700]" italics="true" pageId="16" pageNumber="121">B. rusticans</emphasis>
</taxonomicName>
)....................................
<taxonomicName id="4C7A4D21FF85FFD7FB49FD1CB74DDACA" ID-CoL="KCY6" box="[1221,1347,679,700]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="flavistriga">
<emphasis id="B90EEAB0FF85FFD7FB49FD1CB74DDACA" box="[1221,1347,679,700]" italics="true" pageId="16" pageNumber="121">B. flavistriga</emphasis>
</taxonomicName>
complex
</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFD7EB795DB62" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<materialsCitation id="3B123CFFFF85FFD7FF1BFD7EB795DB62" ID-GBIF-Occurrence="1835171865" location="Washington and Idaho" pageId="16" pageNumber="121" specimenCount="1" stateProvince="Washington and Idaho">
<keyLead id="308B9597FF85FFD7FF1BFD7EB795DB62" pageId="16" pageNumber="121">
- Caudal filaments uniformly pale; abdominal terga 28 with sublateral and anteromedian pale markings fused to form crown shaped pale area (Fig. 13); femora with indistinct or elongate dark marking; mostly southwestern but reported as far north as
<collectingRegion id="49BEF840FF85FFD7FF6DFD44B3B9DB63" box="[225,439,767,789]" isEnumeration="true" pageId="16" pageNumber="121">Washington and Idaho</collectingRegion>
.........................................................................
<taxonomicName id="4C7A4D21FF85FFD7FAAAFD44B795DB62" ID-CoL="KCZR" box="[1318,1435,767,788]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="notos">
<emphasis id="B90EEAB0FF85FFD7FAAAFD44B795DB62" box="[1318,1435,767,788]" italics="true" pageId="16" pageNumber="121">Baetis notos</emphasis>
</taxonomicName>
</keyLead>
</materialsCitation>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFCA7B795DBFC" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFCA7B795DB39" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFCA7B795DB39" pageId="16" pageNumber="121">
4 Scapes and/or pedicels (Fig. 33), paraprocts and abdominal sterna (Fig. 31) with robust setae in addition to fine setae and scales; pronotum usually with pair of dark, bilobed markings (Figs. 2b, 51) (
<taxonomicName id="4C7A4D21FF85FFD7FC32FC81B645DB39" ID-CoL="KD2J" baseAuthorityName="Pictet" baseAuthorityYear="1843" box="[958,1099,826,847]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="rhodani">
<emphasis id="B90EEAB0FF85FFD7FC32FC81B645DB39" box="[958,1099,826,847]" italics="true" pageId="16" pageNumber="121">Baetis rhodani</emphasis>
</taxonomicName>
group)..................... 5
</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFCECB795DBFC" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFCECB795DBFC" pageId="16" pageNumber="121">- Pronotum without pair of dark, bilobed markings, but may have pale bilobed marking (Fig. 52); scapes and/or pedicels, paraprocts, and abdominal sterna with only fine setae and scales..................................................... 9</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFC2AB795DBB2" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFC2AB795DBD1" blockId="16.[151,1436,151,1962]" box="[151,1435,913,935]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFC2AB795DBD1" box="[151,1435,913,935]" pageId="16" pageNumber="121">5 Gills with fine and robust setae on margins (Figs. 39, 40), serrations present or absent............................... 6</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFC14B795DBB2" blockId="16.[151,1436,151,1962]" box="[151,1435,943,965]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFC14B795DBB2" box="[151,1435,943,965]" pageId="16" pageNumber="121">- Gills with only fine setae and serrations on margins, robust setae absent (Fig. 41)................................... 7</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFC77B795DC4C" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFC77B792DB89" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFC77B792DB89" pageId="16" pageNumber="121">
6 Abdominal terga with robust setae near posterior margins (as in Fig. 30); gill margins smooth (Fig. 40); paraglossae with 5 subapical rows of setae; labial palps slender, length segment 2&gt;2× basal width of segment 3 (Fig. 25).......
<taxonomicName id="4C7A4D21FF85FFD7FA83FC51B792DB89" ID-CoL="KCZB" box="[1295,1436,1002,1023]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="magnus">
<emphasis id="B90EEAB0FF85FFD7FA83FC51B792DB89" box="[1295,1436,1002,1023]" italics="true" pageId="16" pageNumber="121">Baetis magnus</emphasis>
</taxonomicName>
</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFBBCB795DC4C" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFBBCB795DC4C" pageId="16" pageNumber="121">
- Abdominal terga without robust setae; gill margins serrate (as in Fig. 41); paraglossae with 34 subapical rows of setae; length of labial palp segment 2 &lt;2× basal width of segment 3 (Fig. 26).......................................
<taxonomicName id="4C7A4D21FF85FFD7FA95FB9EB795DC4C" ID-CoL="KCX5" box="[1305,1435,1061,1082]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="adonis">
<emphasis id="B90EEAB0FF85FFD7FA95FB9EB795DC4C" box="[1305,1435,1061,1082]" italics="true" pageId="16" pageNumber="121">Baetis adonis</emphasis>
</taxonomicName>
</keyLead>
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</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFBF9B795DCE4" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFBF9B795DC21" blockId="16.[151,1436,151,1962]" box="[151,1435,1089,1111]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFBF9B795DC21" box="[151,1435,1089,1111]" pageId="16" pageNumber="121">7 Median caudal filament reduced to 12 segments (Fig. 32).................................................... 8</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFBE4B795DCE4" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFBE4B795DCE4" pageId="16" pageNumber="121">- Median caudal filament with at least 3 segments, usually&gt;20% length of cerci in mature specimens and with fine setae laterally................................................................................................ 13</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFB22B795DC9C" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFB22B795DCD9" blockId="16.[151,1436,151,1962]" box="[151,1435,1177,1199]" pageId="16" pageNumber="121">
<materialsCitation id="3B123CFFFF85FFD7FF1BFB22B795DCD9" ID-GBIF-Occurrence="1835171931" box="[151,1435,1177,1199]" location="Northern" pageId="16" pageNumber="121" specimenCount="1" stateProvince="Northern">
<keyLead id="308B9597FF85FFD7FF1BFB22B795DCD9" box="[151,1435,1177,1199]" pageId="16" pageNumber="121">
8 Gills&gt; 2× longer than wide; far
<collectingRegion id="49BEF840FF85FFD7FD9BFB22B07CDCD9" box="[535,626,1177,1199]" country="Zambia" name="Northern" pageId="16" pageNumber="121">Northern</collectingRegion>
........................................................
<taxonomicName id="4C7A4D21FF85FFD7FA80FB21B795DCD9" ID-CoL="KCY8" box="[1292,1435,1178,1199]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="foemina">
<emphasis id="B90EEAB0FF85FFD7FA80FB21B795DCD9" box="[1292,1435,1178,1199]" italics="true" pageId="16" pageNumber="121">Baetis foemina</emphasis>
</taxonomicName>
</keyLead>
</materialsCitation>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFB0CB795DC9C" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFB0CB795DC9C" pageId="16" pageNumber="121">
- Gills &lt;2× longer than wide; widespread in western areas (
<taxonomicName id="4C7A4D21FF85FFD7FC80FB0CB181DCBA" ID-CoL="KCXF" authorityName="Dodds" authorityYear="1923" box="[780,911,1207,1228]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="bicaudatus">
<emphasis id="B90EEAB0FF85FFD7FC80FB0CB181DCBA" box="[780,911,1207,1228]" italics="true" pageId="16" pageNumber="121">B. bicaudatus</emphasis>
</taxonomicName>
and synonym; includes at least 4 BINs)..........................................................................................
<taxonomicName id="4C7A4D21FF85FFD7FB14FB6EB74DDC9C" ID-CoL="KCXF" authorityName="Dodds" authorityYear="1923" box="[1176,1347,1237,1258]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="bicaudatus">
<emphasis id="B90EEAB0FF85FFD7FB14FB6EB74DDC9C" box="[1176,1347,1237,1258]" italics="true" pageId="16" pageNumber="121">Baetis bicaudatus</emphasis>
</taxonomicName>
complex
</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFB4AB795DD0B" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFB4AB795DD53" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFB4AB795DD53" pageId="16" pageNumber="121">
9 Labial palps slender and elongate, with inner margin of segment 2 straight or convex (Fig. 18); labrum usually longer than wide and tapered distally (Fig. 29); abdominal tergum 5 distinctly paler than adjacent terga (Fig. 1) (
<taxonomicName id="4C7A4D21FF85FFD7FB28FAB4B71ADD52" ID-CoL="KCX7" box="[1188,1300,1295,1316]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="alius">
<emphasis id="B90EEAB0FF85FFD7FB28FAB4B71ADD52" box="[1188,1300,1295,1316]" italics="true" pageId="16" pageNumber="121">Baetis alius</emphasis>
</taxonomicName>
group)... 10
</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFA96B795DD0B" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFA96B795DD0B" pageId="16" pageNumber="121">
- Labial palps with distinct medial projection, with inner margin of segment 2 concave (Fig. 17); labrum wider than it is long (as in Fig. 28); abdominal color pattern with all terga similar, usually with thin pale median line and pair of diffuse pale sublateral markings (Fig. 6) (
<taxonomicName id="4C7A4D21FF85FFD7FE1AFADCB016DD0A" ID-CoL="KD3P" box="[406,536,1383,1404]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="vernus">
<emphasis id="B90EEAB0FF85FFD7FE1AFADCB016DD0A" box="[406,536,1383,1404]" italics="true" pageId="16" pageNumber="121">Baetis vernus</emphasis>
</taxonomicName>
group)................................................................... 11
</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFA3FB795DDC1" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFA3FB792DDEC" blockId="16.[151,1436,151,1962]" box="[151,1436,1412,1434]" pageId="16" pageNumber="121">
<materialsCitation id="3B123CFFFF85FFD7FF1BFA3FB792DDEC" ID-GBIF-Occurrence="1835171866" box="[151,1436,1412,1434]" location="Eastern" pageId="16" pageNumber="121" specimenCount="1" stateProvince="Eastern">
<keyLead id="308B9597FF85FFD7FF1BFA3FB792DDEC" box="[151,1436,1412,1434]" pageId="16" pageNumber="121">
10
<collectingRegion id="49BEF840FF85FFD7FF6DFA3EB327DDEC" box="[225,297,1413,1434]" country="Zambia" name="Eastern" pageId="16" pageNumber="121">Eastern</collectingRegion>
North America; caudal filaments with median dark band.......................................
<taxonomicName id="4C7A4D21FF85FFD7FAA4FA3EB792DDEC" ID-CoL="5WC2M" box="[1320,1436,1413,1434]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="pluto">
<emphasis id="B90EEAB0FF85FFD7FAA4FA3EB792DDEC" box="[1320,1436,1413,1434]" italics="true" pageId="16" pageNumber="121">Baetis pluto</emphasis>
</taxonomicName>
</keyLead>
</materialsCitation>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFA19B795DDC1" blockId="16.[151,1436,151,1962]" box="[151,1435,1441,1463]" pageId="16" pageNumber="121">
<materialsCitation id="3B123CFFFF85FFD7FF1BFA19B795DDC1" ID-GBIF-Occurrence="1835171864" box="[151,1435,1441,1463]" location="Western" pageId="16" pageNumber="121" specimenCount="1" stateProvince="Western">
<keyLead id="308B9597FF85FFD7FF1BFA19B795DDC1" box="[151,1435,1441,1463]" pageId="16" pageNumber="121">
-
<collectingRegion id="49BEF840FF85FFD7FF6DFA19B321DDC1" box="[225,303,1442,1463]" country="Zambia" name="Western" pageId="16" pageNumber="121">Western</collectingRegion>
North America; caudal filaments without medial dark band....................................
<taxonomicName id="4C7A4D21FF85FFD7FAA7FA19B795DDC1" ID-CoL="KCX7" box="[1323,1435,1442,1463]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="alius">
<emphasis id="B90EEAB0FF85FFD7FAA7FA19B795DDC1" box="[1323,1435,1442,1463]" italics="true" pageId="16" pageNumber="121">Baetis alius</emphasis>
</taxonomicName>
</keyLead>
</materialsCitation>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BFA04B795DE5A" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BFA04B795DD84" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFA04B795DD84" pageId="16" pageNumber="121">11 Gills length&gt;2.5× width, usually more than 2.5 abdominal segments in length (Figs. 6, 42); mostly far northern in distribution................................................................................................... 12</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BFA41B795DE5A" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BFA41B795DE5A" pageId="16" pageNumber="121">
- Gills length &lt;2× width, less than 2 abdominal segments in length (Fig. 45); widespread (
<taxonomicName id="4C7A4D21FF85FFD7FBBFFA41B6C4DE79" ID-CoL="KCXJ" authorityName="McDunnough" authorityYear="1925" box="[1075,1226,1530,1551]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="brunneicolor">
<emphasis id="B90EEAB0FF85FFD7FBBFFA41B6C4DE79" box="[1075,1226,1530,1551]" italics="true" pageId="16" pageNumber="121">B. brunneicolor</emphasis>
</taxonomicName>
and
<taxonomicName id="4C7A4D21FF85FFD7FB75FA41B75ADE79" ID-CoL="KD3P" box="[1273,1364,1530,1551]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="vernus">
<emphasis id="B90EEAB0FF85FFD7FB75FA41B75ADE79" box="[1273,1364,1530,1551]" italics="true" pageId="16" pageNumber="121">B. vernus</emphasis>
</taxonomicName>
)........................................................................................
<emphasis id="B90EEAB0FF85FFD7FB4FF9ACB795DE5A" box="[1219,1435,1559,1580]" italics="true" pageId="16" pageNumber="121">
<taxonomicName id="4C7A4D21FF85FFD7FB4FF9ACB74BDE5A" ID-CoL="KD3P" box="[1219,1349,1559,1580]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="vernus">Baetis vernus</taxonomicName>
complex
</emphasis>
</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BF98FB792DE11" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BF98FB792DE3C" blockId="16.[151,1436,151,1962]" box="[151,1436,1588,1610]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BF98FB792DE3C" box="[151,1436,1588,1610]" pageId="16" pageNumber="121">
12 Median caudal filament subequal in length to cerci.............................................
<taxonomicName id="4C7A4D21FF85FFD7FB62F98EB792DE3C" ID-CoL="KCYH" authorityName="Ide" authorityYear="1937" box="[1262,1436,1589,1610]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="hudsonicus">
<emphasis id="B90EEAB0FF85FFD7FB62F98EB792DE3C" box="[1262,1436,1589,1610]" italics="true" pageId="16" pageNumber="121">Baetis hudsonicus</emphasis>
</taxonomicName>
</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BF9E9B792DE11" blockId="16.[151,1436,151,1962]" box="[151,1436,1617,1639]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BF9E9B792DE11" box="[151,1436,1617,1639]" pageId="16" pageNumber="121">
- Median caudal filament length&gt; 0.8× length of cerci.............................................
<taxonomicName id="4C7A4D21FF85FFD7FA85F9E9B792DE11" ID-CoL="KCXL" authorityName="Lehmkuhl" authorityYear="1973" box="[1289,1436,1618,1639]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="bundyae">
<emphasis id="B90EEAB0FF85FFD7FA85F9E9B792DE11" box="[1289,1436,1618,1639]" italics="true" pageId="16" pageNumber="121">Baetis bundyae</emphasis>
</taxonomicName>
</keyLead>
</paragraph>
</keyStep>
<keyStep id="308E2E07FF85FFD7FF1BF9D4B798DFDC" pageId="16" pageNumber="121">
<paragraph id="8BC536A2FF85FFD7FF1BF9D4B795DE8C" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BF9D4B795DE8C" pageId="16" pageNumber="121">
13 Pronotum with pair of dark bilobed markings (Figs. 2b, 51); gills length &lt;2.0× longer than width; labial palp segment 2 with distinct median projection (Figs. 22, 23); abdominal terga with only fine setae, scales, and scale bases; tarsal claws usually with pair of fine subapical setae; fore femur length &lt;3.0× width, mid- and hind femora lengths each &lt;3.5× respective widths; outer incisors of mandibles with at least 3 teeth (Figs. 46, 47); widespread (
<taxonomicName id="4C7A4D21FF85FFD7FC4BF97CB65EDEAA" ID-CoL="KD3F" authorityName="Dodds" authorityYear="1923" box="[967,1104,1735,1756]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="tricaudatus">
<emphasis id="B90EEAB0FF85FFD7FC4BF97CB65EDEAA" box="[967,1104,1735,1756]" italics="true" pageId="16" pageNumber="121">B. tricaudatus</emphasis>
</taxonomicName>
and 6 synonyms; comprised of at least 16 BINs)...................................................................
<taxonomicName id="4C7A4D21FF85FFD7FB18F95EB74DDE8C" ID-CoL="KD3F" authorityName="Dodds" authorityYear="1923" box="[1172,1347,1765,1786]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="tricaudatus">
<emphasis id="B90EEAB0FF85FFD7FB18F95EB74DDE8C" box="[1172,1347,1765,1786]" italics="true" pageId="16" pageNumber="121">Baetis tricaudatus</emphasis>
</taxonomicName>
complex
</keyLead>
</paragraph>
<paragraph id="8BC536A2FF85FFD7FF1BF8B9B798DFDC" blockId="16.[151,1436,151,1962]" pageId="16" pageNumber="121">
<keyLead id="308B9597FF85FFD7FF1BF8B9B798DFDC" pageId="16" pageNumber="121">
- Pronotum dark medially, without dark bilobed markings (Figs. 3, 54); gills length 2.0× width (Figs. 43, 44); labial palp segment 2 with poorly developed median projection (Figs. 24, 27); abdominal terga with robust setae, especially near hind margins, in addition to fine setae, scales, and scale bases (Fig. 30); tarsal claws without subapical pair of setae; fore femur length&gt;3.0× width, mid- and hind femora lengths&gt;3.5× widths; outer incisors of mandibles fused into single scraping blade (small secondary tooth may be present) (Figs. 48-50); Rocky Mountains and westward (
<taxonomicName id="4C7A4D21FF85FFD7FC60F8CCB66ADFFA" ID-CoL="KD29" authorityName="Traver" authorityYear="1935" box="[1004,1124,1911,1932]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="piscatoris">
<emphasis id="B90EEAB0FF85FFD7FC60F8CCB66ADFFA" box="[1004,1124,1911,1932]" italics="true" pageId="16" pageNumber="121">B. piscatoris</emphasis>
</taxonomicName>
,
<taxonomicName id="4C7A4D21FF85FFD7FBFDF8CCB6D7DFFA" ID-CoL="KCZZ" authorityName="Mayo" authorityYear="1952" box="[1137,1241,1911,1932]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="palisadi">
<emphasis id="B90EEAB0FF85FFD7FBFDF8CCB6D7DFFA" box="[1137,1241,1911,1932]" italics="true" pageId="16" pageNumber="121">B. palisadi</emphasis>
</taxonomicName>
,
<taxonomicName id="4C7A4D21FF85FFD7FB68F8CCB76BDFFA" authorityName="McCafferty" authorityYear="1997" box="[1252,1381,1911,1932]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="persecutor">
<emphasis id="B90EEAB0FF85FFD7FB68F8CCB76BDFFA" box="[1252,1381,1911,1932]" italics="true" pageId="16" pageNumber="121">B. persecutor</emphasis>
</taxonomicName>
). ..................................................................................
<taxonomicName id="4C7A4D21FF85FFD7FB15F82EB732DFDC" ID-CoL="KD29" authorityName="Traver" authorityYear="1935" box="[1177,1340,1941,1962]" class="Insecta" family="Baetidae" genus="Baetis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Ephemeroptera" pageId="16" pageNumber="121" phylum="Arthropoda" rank="species" species="piscatoris">
<emphasis id="B90EEAB0FF85FFD7FB15F82EB732DFDC" box="[1177,1340,1941,1962]" italics="true" pageId="16" pageNumber="121">Baetis piscatoris</emphasis>
</taxonomicName>
complex
</keyLead>
</paragraph>
</keyStep>
</subSubSection>
</treatment>
</document>