<documentid="2964D7F1CD36E2AF69AD614B93F8B41B"ID-DOI="10.5281/zenodo.13244673"ID-ISSN="2345-7600"ID-Zenodo-Dep="13244673"IM.bibliography_approvedBy="felipe"IM.illustrations_approvedBy="felipe"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.taxonomicNames_approvedBy="felipe"IM.treatments_approvedBy="felipe"checkinTime="1722970128670"checkinUser="felipe"docAuthor="Nieser, Nico"docDate="2004"docId="B22C87F3144BE02CFBA7FDD8E1FDFD74"docLanguage="en"docName="RafflesBZool.52.1.79-96.pdf"docOrigin="Raffles Bulletin of Zoology 52 (1)"docStyle="DocumentStyle:19380AF0FBA5B2F218DD253A34ABE57F.5:RafflesBZool.2003-2005.journal_article"docStyleId="19380AF0FBA5B2F218DD253A34ABE57F"docStyleName="RafflesBZool.2003-2005.journal_article"docStyleVersion="5"docTitle="Anisops Spinola 1837"docType="treatment"docVersion="2"lastPageNumber="84"masterDocId="4E15FF8B144FE029FFA2FFD9E456FFA8"masterDocTitle="Guide To Aquatic Heteroptera Of Singapore And Peninsular Malaysia Iii. Pleidae And Notonectidae"masterLastPageNumber="96"masterPageNumber="79"pageNumber="83"updateTime="1722975444972"updateUser="ExternalLinkService"zenodo-license-document="CC-BY-4.0">
<mods:titleid="368840A9D8523B4BC471424FDCD8506F">Guide To Aquatic Heteroptera Of Singapore And Peninsular Malaysia Iii. Pleidae And Notonectidae</mods:title>
<bibRefCitationid="5E144B14144BE02DFA87FD98E194FDF0"author="Brooks, G"box="[1317,1474,577,600]"pageId="4"pageNumber="83"pagination="301 - 519"refId="ref12619"refString="Brooks, G. T., 1951. A revision of the genus Anisops (Notonectidae, Hemiptera). University of Kansas Science Bulletin, 34: 301 - 519."type="journal article"year="1951">Brooks (1951)</bibRefCitation>
who provides a key to species for males. Since then many species have been added including one described from
<bibRefCitationid="5E144B14144BE02DFCE9FD46E78FFD1E"author="Leong, C"box="[843,985,671,694]"pageId="4"pageNumber="83"pagination="101 - 102"refId="ref13333"refString="Leong, C. Y., 1963. Anisops lansburyi sp. n. (Hemiptera: Notonectidae) from Malaya. Proceedings of the Royal Entomological Society of London, (B) 32: 101 - 102."type="journal article"year="1963">Leong, 1963</bibRefCitation>
). In addition the distributional areas of many species are much greater than was suggested by Brooks.
There are 11 species actually known from the Malay Peninsula. They are remarkable for having haemoglobin cells anteriorly in their abdomen (
<bibRefCitationid="5E144B14144BE02DFB16FCE5E113FCFB"author="Bare, C"box="[1204,1349,828,851]"pageId="4"pageNumber="83"pagination="265 - 349"refId="ref12509"refString="Bare, C. O., 1928. Haemoglobin cells and other studies of the genus Buenoa (Hemiptera, Notonectidae). The University of Kansas Science Bulletin, 18: 265 - 349."type="journal article"year="1928">Bare, 1928</bibRefCitation>
). In these haemoglobin cells they store the reserve oxygen during a dive (
<bibRefCitationid="5E144B14144BE02DFCE9FCA2E780FC3A"author="Miller, P"box="[843,982,891,914]"pageId="4"pageNumber="83"pagination="166 - 175"refId="ref13489"refString="Miller, P. L., 1964. The possible role of haemoglobin in Anisops and Buenoa (Hemiptera, Notonectidae). Proceedings of the Royal Entomological Society of London, (A) 30: 166 - 175."type="journal article"year="1964">Miller, 1964</bibRefCitation>
). The amount of air they take with them under water on the outside of the body can be regulated and so that they can obtain neutral buoyancy which makes them belong to the few really planktonic insects. They usually live in ponds or pools, including virtually stagnant parts of streams, with few or no fish. However, some fish ponds may occasionally be infested with
, preying on the fry. Some species which live in farmponds are widely distributed, e.g.
<taxonomicNameid="FD854D66144BE02DFC56FBAEE038FB26"baseAuthorityName="Gorai & Chaudhuri"baseAuthorityYear="1962"box="[1012,1134,1143,1166]"class="Insecta"family="Notonectidae"genus="Anisops"kingdom="Animalia"order="Hemiptera"pageId="4"pageNumber="83"phylum="Arthropoda"rank="species"species="bouvieri">
Definite identification is usually possible only for males, which have several distinguishing secondary sexual characteristics. The front tarsi are one-segmented in males but two-segmented in females (
). In Malayan species, the most important identification characteristics are to be found on the head of the male, notably the length and place of origin of the
<figureCitationid="A2BE2A60144BE02DFAC0FAAAE737FA01"captionStart="Figs"captionStartId="5.[113,158,2063,2084]"captionTargetBox="[140,1427,1106,1998]"captionTargetId="figure-512@5.[111,1456,1074,2019]"captionTargetPageId="5"captionText="Figs. 12-17. Anisops male, head in lateral view. 12 A. barbatus; 13 A. bouvieri; 14 A.tahitiensis; 15 A.kuroiwae; 16 A. exiguus; 17 A. lansburyi. p = rostral prong; t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244694"httpUri="https://zenodo.org/record/13244694/files/figure.png"pageId="4"pageNumber="83">Figs. 12- 17</figureCitation>
<figureCitationid="A2BE2A60144BE02DFCE9FA68E7CFFA60"box="[843,921,1457,1480]"captionStart="Figs"captionStartId="6.[136,181,2092,2113]"captionTargetBox="[152,1461,1515,2048]"captionTargetId="figure-608@6.[128,1481,1483,2080]"captionTargetPageId="6"captionText="Figs. 18-20. Anisops male, head in frontal view; 19-20 rostrum removed. 18 A. niveus; 19 A. kuroiwae; 20 A. nasutus. t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244696"httpUri="https://zenodo.org/record/13244696/files/figure.png"pageId="4"pageNumber="83">Fig. 18</figureCitation>
<figureCitationid="A2BE2A60144BE02DFAD0FA68E1E2FA60"box="[1394,1460,1457,1480]"captionStart="Fig"captionStartId="1.[813,849,954,975]"captionTargetBox="[922,1336,191,932]"captionTargetId="figure-314@1.[874,1397,154,980]"captionTargetPageId="1"captionText="Fig. 2. Anisops kuroiwae, dorsal view of male, length 6.4 mm. a = anterior width of vertex; c = cephalic projection; s = synthlipsis"figureDoi="http://doi.org/10.5281/zenodo.13244676"httpUri="https://zenodo.org/record/13244676/files/figure.png"pageId="4"pageNumber="83">Fig. 2</figureCitation>
). The number and shape of the teeth in the stridulatory comb are very important for specific identification in some species. The apex of the comb is towards the posterior (i. e. the concave, flexor) margin of the tibia. In addition the shape of the forefemur, especially wether its apex is narrow or broad, and the general shape of the tibia; the number and position of spines on the tibia and the presence or absence of small spines on the tarsus are important characters. Other characters used in keys are various ratios. Important is the ratio between the
<figureCitationid="A2BE2A60144BE02DFB1FF8B3E156F829"box="[1213,1280,1898,1921]"captionStart="Fig"captionStartId="1.[813,849,954,975]"captionTargetBox="[922,1336,191,932]"captionTargetId="figure-314@1.[874,1397,154,980]"captionTargetPageId="1"captionText="Fig. 2. Anisops kuroiwae, dorsal view of male, length 6.4 mm. a = anterior width of vertex; c = cephalic projection; s = synthlipsis"figureDoi="http://doi.org/10.5281/zenodo.13244676"httpUri="https://zenodo.org/record/13244676/files/figure.png"pageId="4"pageNumber="83">Fig. 2</figureCitation>
<bibRefCitationid="5E144B14144BE02DFBFCF850E0A3F808"author="Truxal, F"box="[1118,1269,1929,1952]"pageId="4"pageNumber="83"pagination="1351 - 1523"refId="ref14052"refString="Truxal, F. S., 1953. A revision of the genus Buenoa (Hemiptera Notonectidae). The University of Kansas Science Bulletin, 35: 1351 - 1523."type="journal article"year="1953">Truxal (1953)</bibRefCitation>
most of the above terminology was introduced or redefined by
<bibRefCitationid="5E144B14144BE02DFA82F870E1E8F868"author="Brooks, G"box="[1312,1470,1961,1984]"pageId="4"pageNumber="83"pagination="301 - 519"refId="ref12619"refString="Brooks, G. T., 1951. A revision of the genus Anisops (Notonectidae, Hemiptera). University of Kansas Science Bulletin, 34: 301 - 519."type="journal article"year="1951">Brooks (1951)</bibRefCitation>
is, apart from a few exceptions, rather uniform and tends to fade in specimens killed or stored in alcohol. So it is usually ignored in the treatment of the genus below.
<figureCitationid="A2BE2A60144AE02CFF3CFEE3E4B4FEE7"box="[158,226,314,335]"captionStart="Fig"captionStartId="1.[813,849,954,975]"captionTargetBox="[922,1336,191,932]"captionTargetId="figure-314@1.[874,1397,154,980]"captionTargetPageId="1"captionText="Fig. 2. Anisops kuroiwae, dorsal view of male, length 6.4 mm. a = anterior width of vertex; c = cephalic projection; s = synthlipsis"figureDoi="http://doi.org/10.5281/zenodo.13244676"httpUri="https://zenodo.org/record/13244676/files/figure.png"pageId="5"pageNumber="84">Figs. 2</figureCitation>
<figureCitationid="A2BE2A60144AE02CFF4EFEE3E57EFEE7"box="[236,296,314,335]"captionStart="Figs"captionStartId="5.[113,158,2063,2084]"captionTargetBox="[140,1427,1106,1998]"captionTargetId="figure-512@5.[111,1456,1074,2019]"captionTargetPageId="5"captionText="Figs. 12-17. Anisops male, head in lateral view. 12 A. barbatus; 13 A. bouvieri; 14 A.tahitiensis; 15 A.kuroiwae; 16 A. exiguus; 17 A. lansburyi. p = rostral prong; t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244694"httpUri="https://zenodo.org/record/13244694/files/figure.png"pageId="5"pageNumber="84">13, 15</figureCitation>
<keyLeadid="817495D0144AE02CFFD3FE8EE6A6FE21"pageId="5"pageNumber="84">– Interocular space anteriorly not produced into a cephalic projection ................................................................................ 4</keyLead>
<figureCitationid="A2BE2A60144AE02CFF5AFE13E56BFE77"box="[248,317,458,479]"captionStart="Figs"captionStartId="5.[113,158,2063,2084]"captionTargetBox="[140,1427,1106,1998]"captionTargetId="figure-512@5.[111,1456,1074,2019]"captionTargetPageId="5"captionText="Figs. 12-17. Anisops male, head in lateral view. 12 A. barbatus; 13 A. bouvieri; 14 A.tahitiensis; 15 A.kuroiwae; 16 A. exiguus; 17 A. lansburyi. p = rostral prong; t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244694"httpUri="https://zenodo.org/record/13244694/files/figure.png"pageId="5"pageNumber="84">Fig. 15</figureCitation>
– Cephalic projection in dorsal view more or less acuminate at apex, in lateral view extending in front of eye half or more the total length of the frons (
<figureCitationid="A2BE2A60144AE02CFE2BFDF8E586FD9E"box="[393,464,545,566]"captionStart="Figs"captionStartId="5.[113,158,2063,2084]"captionTargetBox="[140,1427,1106,1998]"captionTargetId="figure-512@5.[111,1456,1074,2019]"captionTargetPageId="5"captionText="Figs. 12-17. Anisops male, head in lateral view. 12 A. barbatus; 13 A. bouvieri; 14 A.tahitiensis; 15 A.kuroiwae; 16 A. exiguus; 17 A. lansburyi. p = rostral prong; t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244694"httpUri="https://zenodo.org/record/13244694/files/figure.png"pageId="5"pageNumber="84">Fig. 13</figureCitation>
<taxonomicNameid="FD854D66144AE02CFD26FDF8E6A6FD9E"ID-CoL="5V393"baseAuthorityName="Gorai & Chaudhuri"baseAuthorityYear="1962"box="[644,752,545,566]"class="Insecta"family="Notonectidae"genus="Anisops"kingdom="Animalia"order="Hemiptera"pageId="5"pageNumber="84"phylum="Arthropoda"rank="species"species="bouvieri">
<figureCitationid="A2BE2A60144AE02CFECAFD83E5FBFDC7"box="[360,429,602,623]"captionStart="Figs"captionStartId="6.[136,181,2092,2113]"captionTargetBox="[152,1461,1515,2048]"captionTargetId="figure-608@6.[128,1481,1483,2080]"captionTargetPageId="6"captionText="Figs. 18-20. Anisops male, head in frontal view; 19-20 rostrum removed. 18 A. niveus; 19 A. kuroiwae; 20 A. nasutus. t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244696"httpUri="https://zenodo.org/record/13244696/files/figure.png"pageId="5"pageNumber="84">Fig. 19</figureCitation>
<figureCitationid="A2BE2A60144AE02CFDAAFD4DE619FD01"box="[520,591,660,681]"captionStart="Figs"captionStartId="6.[136,181,2092,2113]"captionTargetBox="[152,1461,1515,2048]"captionTargetId="figure-608@6.[128,1481,1483,2080]"captionTargetPageId="6"captionText="Figs. 18-20. Anisops male, head in frontal view; 19-20 rostrum removed. 18 A. niveus; 19 A. kuroiwae; 20 A. nasutus. t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244696"httpUri="https://zenodo.org/record/13244696/files/figure.png"pageId="5"pageNumber="84">Fig. 20</figureCitation>
<figureCitationid="A2BE2A60144AE02CFDCDFD68E6BFFD6E"box="[623,745,689,710]"captionStart="Figs"captionStartId="9.[111,156,2037,2058]"captionTargetBox="[111,748,1580,1991]"captionTargetId="figure-614@9.[92,769,1572,2012]"captionTargetPageId="9"captionText="Figs. 25-26. Anisops breddini, male, anterior part of body in dorsal view. 25 brachypterous form; 26 macropterous form. p = ciliated pit at base of hemielytral commissure."figureDoi="http://doi.org/10.5281/zenodo.13244702"httpUri="https://zenodo.org/record/13244702/files/figure.png"pageId="5"pageNumber="84">Figs. 25, 26</figureCitation>
<keyLeadid="817495D0144AE02CFFD3FD33E6A6FD57"box="[113,752,746,767]"pageId="5"pageNumber="84">– In dorsal view eyes not holoptic ........................................... 5</keyLead>
<figureCitationid="A2BE2A60144AE02CFE2DFCDEE582FCB4"box="[399,468,775,796]"captionStart="Figs"captionStartId="6.[136,181,2092,2113]"captionTargetBox="[152,1461,1515,2048]"captionTargetId="figure-608@6.[128,1481,1483,2080]"captionTargetPageId="6"captionText="Figs. 18-20. Anisops male, head in frontal view; 19-20 rostrum removed. 18 A. niveus; 19 A. kuroiwae; 20 A. nasutus. t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244696"httpUri="https://zenodo.org/record/13244696/files/figure.png"pageId="5"pageNumber="84">Fig. 18</figureCitation>
<figureCitationid="A2BE2A60144AE02CFD35FC98E6B2FCFE"box="[663,740,833,854]"captionStart="Figs"captionStartId="5.[113,158,2063,2084]"captionTargetBox="[140,1427,1106,1998]"captionTargetId="figure-512@5.[111,1456,1074,2019]"captionTargetPageId="5"captionText="Figs. 12-17. Anisops male, head in lateral view. 12 A. barbatus; 13 A. bouvieri; 14 A.tahitiensis; 15 A.kuroiwae; 16 A. exiguus; 17 A. lansburyi. p = rostral prong; t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244694"httpUri="https://zenodo.org/record/13244694/files/figure.png"pageId="5"pageNumber="84">Fig. 16</figureCitation>
<figureCitationid="A2BE2A60144AE02CFE8FFC4EE521FC04"box="[301,375,919,940]"captionStart="Figs"captionStartId="5.[113,158,2063,2084]"captionTargetBox="[140,1427,1106,1998]"captionTargetId="figure-512@5.[111,1456,1074,2019]"captionTargetPageId="5"captionText="Figs. 12-17. Anisops male, head in lateral view. 12 A. barbatus; 13 A. bouvieri; 14 A.tahitiensis; 15 A.kuroiwae; 16 A. exiguus; 17 A. lansburyi. p = rostral prong; t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244694"httpUri="https://zenodo.org/record/13244694/files/figure.png"pageId="5"pageNumber="84">Fig. 17</figureCitation>
<keyLeadid="817495D0144AE02CFFD3FC34E6B8FBB7"pageId="5"pageNumber="84">– Synthlipsis about one third or more the anterior width of vertex, length over 5.0 mm ............................................................... 8</keyLead>
<figureCitationid="A2BE2A60144AE02CFAF3FECEE1F2FE84"box="[1361,1444,279,300]"captionStart="Figs"captionStartId="5.[113,158,2063,2084]"captionTargetBox="[140,1427,1106,1998]"captionTargetId="figure-512@5.[111,1456,1074,2019]"captionTargetPageId="5"captionText="Figs. 12-17. Anisops male, head in lateral view. 12 A. barbatus; 13 A. bouvieri; 14 A.tahitiensis; 15 A.kuroiwae; 16 A. exiguus; 17 A. lansburyi. p = rostral prong; t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244694"httpUri="https://zenodo.org/record/13244694/files/figure.png"pageId="5"pageNumber="84">Fig. 12</figureCitation>
10. Along the median longitudinal axis the head is less than one half the length of the pronotum; tylus and frons not carinate, in lateral view frons extending in front of the eyes; stridulatory comb on foretibia with about 22 teeth 14 apical ones distinctly longer than the 8 basal ones which are differently orientated (
– Along median longitudinal axis the head is more than one half the length of the pronotum; tylus and adjacent part of the frons carinate, in lateral view dorsal half of frons not extending in front of eyes (
<figureCitationid="A2BE2A60144AE02CFC77FD54E04DFD0A"box="[981,1051,653,674]"captionStart="Figs"captionStartId="5.[113,158,2063,2084]"captionTargetBox="[140,1427,1106,1998]"captionTargetId="figure-512@5.[111,1456,1074,2019]"captionTargetPageId="5"captionText="Figs. 12-17. Anisops male, head in lateral view. 12 A. barbatus; 13 A. bouvieri; 14 A.tahitiensis; 15 A.kuroiwae; 16 A. exiguus; 17 A. lansburyi. p = rostral prong; t = tylus."figureDoi="http://doi.org/10.5281/zenodo.13244694"httpUri="https://zenodo.org/record/13244694/files/figure.png"pageId="5"pageNumber="84">Fig. 14</figureCitation>