Research & Reviews: Journal of Zoological Sciences
Menue-ISSN: 2321-6190 p-ISSN: 2347-2294
e-ISSN: 2321-6190 p-ISSN: 2347-2294
Bhubaneshwari Devi M*, Sandhyarani Devi O and Leiphon Wahengbam
Laboratory of Entomology, Department of Zoology, DM College of Science, Imphal, Manipur, India
Received date: 03/05/2017 Accepted date: 17/05/2017 Published date: 19/05/2017
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The aquatic beetle’s fauna of Manipur has never been studied from the last decade despite of State Fauna Series 10, Fauna of Manipur (Part-2) Insects published by Zoological Survey of India in 2004. In the present study, we provide an updated checklist of aquatic and semi aquatic coleopteran from Manipur based on the study of aquatic beetles diversity of Manipur (2012 to till date) and data from previous literatures were used to compile a checklist of the Manipur. The checklist includes data on the type localities, type specimens, descriptors, distributions and previous literature for 15 families of aquatic and semi aquatic coleopteran belonging to 49 genus and 100 valid species. From all this families, family Dytiscidae is the most abundant and diverse than the remaining. In the family Dytiscidae 45 species are recorded followed by 35 species of Hydrophilidae, 4 species of family Noteridae, 2 species each of family Gyrinidae, Hydraneidae, Haliplidae and 1 species each belonging to family, Curculionidae, Chrysomelidae, Dryopidae, Limnichidae, Histeridae, Hydrochidae, Sphericidae, Styphylinidae and Helophoridae respectively. Out of 100 species, 43 species were reported as new records from Manipur as well as 7 species from India
The aquatic beetles of Manipur belong in two sub-orders of order Coleoptera, under 15 families (i) sub order Adephaga and (ii) sub order Polyphaga. Out of these 15 families, 4 families such as Dytiscidae, Haliplidae, Noteridae and Gyrinidae belongs to sub order adephaga and 11 families such as Hydraneidae, Hydrochidae, Hydrophilidae, Histeridae, Staphylinidae, Helophoridae, Limnichidae, Curculionidae, Chrysomelidae, Scirtidae and Dryopidae belong to sub-order Polyphaga. Except Histeridae, Staphylinidae, Limnichidae, Curculionidae, Chrysomelidae, Scirtidae and Dryopidae were semi aquatic and the remaining was aquatic. The catalogues and review work on aquatic beetles of world were published earlier [1-11]. In India, the first pioneer in contribution to the taxonomy of Indian aquatic beetles was [12]. The work on aquatic beetles species from Central India were done by [13-18]. Subsequently total seventy two aquatic beetle species from Madhya Pradesh was reported by [19] and 332 species of diving beetles of India was reported by [20]. However, the aquatic beetle fauna from Manipur state was not known since the State Fauna Series No. 10 (Zoological Survey of India) by [21]. The present study was conducted to prepare a checklist on the aquatic beetles of Manipur. From the family Dytiscidae 45 species were recorded followed by 35 species of Hydrophilidae, 4 species of family Noteridae, 2 species each of family Gyrinidae, Hydraneidae, Haliplidae and 1 species each belonging to family, Curculionidae, Chrysomelidae, Dryopidae, Gyrinidae, Limnichidae, Histeridae, Hydrochidae, Sphericidae, Styphylinidae, and Helophoridae respectively [22]. The present checklist documents 100 species of aquatic and semi aquatic beetles recorded from Manipur. Out of 100 species, 43 species were reported as new record from Manipur as well as 7 species from India. Recently, 8054 species of aquatic beetles were known from the world, 588 species were represented in India and 100 species from Manipur. In India, among freshwater Coleoptera, there are certain zoo geographically interesting groups e.g., out of five species of Amphizoidae known from the world; one species is recorded from Kashmir in India. Family Psephenidae is known from North America and Tibet. In recent surveys specimens have been collected from torrential rivers and streams of Arunachal Pradesh and Uttar Pradesh.
A check list of the species recorded from India and adjoining areas was published by (14). Hydrophilidae is the dominant family and other four smaller families namely Hydraenidae, Hydrochidae and Sperchidae were often treated as subfamilies of Hydrophilidae. However in our finding family dytiscidae is the most diverse and abundant followed by Hydrophilidae.
The aquatic beetles study was carried out from 1st February 2012 up to 2017 March during the survey work of the major research project in different regions of 9 districts of Manipur, 4 in the valley and 5 in the hills. The aquatic beetles were collected using D-Frame net, Pond net, Kicking net as well as triangular dip net and circular net with a mesh size of 0.5 mm and dragged around the vegetation for one minute and such three drags constituted a sample. The number of individual was noted down. The large sized insects were captured using bottle traps in horizontal position and also vertical position. After two days the bottle traps were removed and trapped insects were preserved in 70% alcohol and brought back to the laboratory of Entomology, PG Department of Zoology, DM College of Science, Imphal. And identified with the help of standard identification manuals and published literature. A number of identified insects were confirmed in the division of Entomology, IARI, Pusa New Delhi. Male genitalia were removed from specimens that were first relaxed in lightly boiling water for 10 minute. An insect pin with a bent apex was inserted into the abdominal cavity to hook the base of the genital capsule. The entire capsule was then removed from the abdomen and placed in alcohol to dissect and examine. Male genitalia were then glued to a point and placed on the pin beneath the specimen.
The present checklist is presented in a taxonomic order; family, genus and species. It is also prepared by referring documents, consulting published books and journals. For every species in the checklist (genera with unidentified species), name of the species, author and sex of the species respectively is given.
Order- Coleoptera Linnaeus, 1758
Suborder- Adhephaga Schellenberg, 1806
Family- Dytiscidae Leach, 1815
Dytiscidae Leach, 1815:84; type genus: Dytiscus
Subfamily Agabinae Thomson, 1867
Agabides Thomson, 1867:84, as subtribe of Dytiscina; type genus: Agabus
Genus Agabus Leach, 1817
Agabus Leach, 1817:69; type species: Agabus paykullii
Agabus sinuaticollis Regimbart, 1899:278
Genus Platambus Thomson, 1859
Platambus Thomson, 1859:14; type species: Dytiscus maculates Linnaeus, 1758:412.
Platambus lindbergi Gueorguiev, 1963:218
Genus Platynectes Regimbart, 1887
Platynectes Regimbart, 1879:454; type species: Agabus decemnotatus
Aube, 1838b:319
Platynectes kashmiranus kashmiranus J. Balfour- Browne, 1944
Platynectes kashmiranus J. Balfour-Browne, 1944:352,
Subfamily Colymbetinae Erichson, 1837
Colymbetini Erichson, 1837:149; type genus: Colymbetes; sDESCR: Miller 2001:81.
Genus Rhantus Dejean, 1833
Rhantus Dejean, 1833:54; type species: Colymbetes pulverosus
Stephens, 1828:69 (Colymbetes suturalis W.S. Macleay, 1825:31).
Rhantus rugulosus Regimbart, 1899
Rhantus rugulosus Regimbart, 1899:310; TL: India; Holotype MNHN; DESCR: Balke 1995:233.
Rhantus taprobanicus Sharp, 1890
Rhantus taprobanicus Sharp, 1890b:346; TL: Sri Lanka: Bogawantalawa, Hadley; Syntypes BMNH; DESCR: Balke 1992:291.
Subfamily Copelatinae Branden, 1885
Copelatinae Branden, 1885:82; type genus: Copelatus
Genus Copelatus Erichson, 1832
Copelatus Erichson, 1832:18; type species: Dytiscus posticatus
Copelatus indicus Sharp, 1882
Copelatus indicus Sharp, 1882:582; TL: India; LT: Vazirani 1970a:312 BMNH; DESCR: Vazirani 1970a:312.
Genus Lacconectus Motschulsky, 1855
Lacconectus Motschulsky, 1855:83; type species: Lacconectus fulvescens Motschulsky, 1855:83. Paralacconectus Vazirani, 1970a:304; type species: Lacconectus scholzi Gschwendtner, 1922a:134.
Lacconectus biswasi Brancucci, 1986
Lacconectus biswasi Brancucci, 1986:121; TL: India: Manipur: Kamluvan; Holotype ZSI.
Lacconectus ritsemae Regimbart, 1883
Lacconectus ritsemae Regimbart, 1883:229; TL: Indonesia: Java; Holotype RMNH; DESCR: Brancucci 1986:115 (as ritsemai). Lacconectus ritsemai Vazirani, 1977a:59
Lacconectus fulvescens Motschulsky, 1855
Lacconectus fulvescens Motschulsky, 1855:83; TL: East India (Indesorientalis); LT: Brancucci 1986:108 ZMUM; DESCR: Brancucci 1986:107.
Subfamily Dytiscinae Leach, 1815
Dyticides Leach, 1815:84; type genus: Dytiscus. Aubehydrinae Guignot, 1942b:11; type genus: Aubehydrus
Genus Rhantaticus Sharp, 1882
Rhantaticus Sharp, 1880: cl; type species: Hydaticus signatipennis Laporte, 1835:95 (Hydaticus congestus Klug, 1833:48).
Rhantaticus congestus Klug, 1832
Hydaticus congestus Klug, 1833:48; TL: Madagascar; LT: Angus 2003:14 ZMHB; DESCR: Guignot 1961:843; N. COMB: Branden 1885:107.
Rhantus spp.
Genus Graphodesus Dejean, 1833
Graphodesus Dejean, 1833, Cat Col coll Dejean 2:54
Graphodesus sp.
Genus Sandracottus Sharp
Sandracottus Sharp, 1882:672; type species: Dytiscus fasciatus Fabricius, 1775:825 (Hydaticus mixtus Blanchard, 1843: pl. 4).
Sandracottus manipurensis Vazirani, 1969
Sandracottus manipurensis Vazirani, 1969b:277; TL: India: Manipur: Phaiphengmun (Phaiphenigaum); Holotype ZSI.
Genus Cybister Curtis, 1827
Cybister Curtis, 1827:151; type species: Dytiscus lateralis Fabricius, 1798:64 (Dytiscus tripunctatus Olivier, 1795:14).
Cybister confusus Sharp, 1882
Cybister confusus Sharp, 1882:739; TL: India, Sri Lanka, China; Syntypes BMNH; DESCR: Vazirani 1969b:295. Dytiscus zeylanicus Gmelin, 1790:1954; TL: Sri Lanka; Syntypes; N. SYN.: Zimmermann 1920:258.
Cybister limbatus, Fabricius, 1775
Dytiscus limbatus Fabricius, 1775:230; TL: China; Syntypes BMNH; DESCR: Vazirani 1969b:294; N. COMB.: Aube 1838b:55. Dytiscus aciculatus Herbst, 1784:123; TL: East Indies (Ostindien) Syntypes; N. SYN: Schonherr 1808:10.
Cybister tripunctatus lateralis Fabricius, 1798
Dytiscus lateralis Fabricius, 1798:64; TL: India: Tamil Nadu Tranquebar; Syntypes ZMUC; DESCR: Zaitzev 1972:357 (as gotschi); N. STAT: Nilsson 2001:90.
Cybister sugillatus Erichson, 1834 Cybister sugillatus Erichson, 1834:227; TL: China; Syntypes ZMHB; DESCR: Vazirani 1969b:281.
Cybister posticus Aube, 1838
Cybister posticus Aube, 1838b:87; TL: East India (Indes orientales); Syntypes; DESCR: Vazirani 1969b:284.
Genus Dytiscus Linnaeus, 1758
Dytiscus Linnaeus, 1758:411; type species: Dytiscus marginalis
Dytiscus sp.
Genus Eretes Laporte, 1833
Eretes Laporte, 1833:397; type species: Dytiscus griseus Fabricius, 1781:293.
Eretes sticticus Linnaeus, 1767
Dytiscus sticticus Linnaeus, 1767:666; TL: Africa: Barbaria; Syntypes BMNH; DESCR: Miller 2002:264; N. COMB.: Sharp 1882:699. Eunectes conicollis Wollaston, 1861a:97; TL: Cabo Verde; LT: Miller 2002:266 BMNH; N. SYN.: Branden 1885:108.
Genus Hydaticus Leach, 1817
Hydaticus Leach, 1817:69; type species: Dytiscus transversalis
Pontoppidan, 1763:677.
Hydaticus bipunctatus bipunctatus Wehncke, 1876
Hydaticus bipunctatus Wehncke, 1876a:196; TL: Philippines; Syntypes; DESCR: Wewalka 1975b:92.
Hydaticus fabricii fabricii W.S. Macleay, 1825
Rhantaticus Sharp, 1880: cl; type species: Hydaticus signatipennis Laporte, 1835:95 (Hydaticus congestus Klug, 1833:48).
Hydaticus vittatus vittatus Fabricius, 1775
Dytiscus vittatus Fabricius, 1775:825; TL: India; LT: Wewalka 1975b:88 HMUG; DESCR: Wewalka 1975b:87; N. COMB.: Leach 1817:72.
Genus Clypeodytes Regimbart, 1894
Clypeodytes Regimbart, 1894:230; type species: Hydroporus cribrosus Schaum, 1864:107.
Clypeodytes severini Regimbart, 1892
Bidessus severini Regimbart, 1892:116; TL: India: Jharkhand (Bihar): Mandar; Syntypes MNHN; DESCR: Vazirani 1969b:325;N. COMB: Regimbart 1899:216.
Genus Hydroglyphus Motschulsky, 1853
Hydroglyphus Motschulsky, 1853:5; type species: Dytiscus geminus Fabricius, 1792:199.
Guignotus Houlbert, 1934:53; type species: Dytiscus geminus Fabricius, 1792:199.
Hydroglyphus flammulatusSharp, 1882
Bidessus flammulatus Sharp, 1882:359; TL: China: Jiangxi: Jiujiang (Kiu Kiang); Syntypes BMNH; DESCR: Vazirani 1969b:314;N. COMB: Bistrom 1988:12.
Hydroglyphus inconstans Regimbart, 1892
Bidessus inconstans Regimbart, 1892:119; TL: India: Bihar: Konbir-Nowatoli, Mandar; Syntypes MNHN; DESCR: Vazirani1969b:322; N. COMB: Bistrom 1988:14.
Genus Leiodytes Guignot, 1936
Leiodytes Guignot, 1936:20; type species: Hydroporus evanescens Boheman, 1848:252.
Leiodytes nicobaricus Redtenbacher, 1867
Hydroporus nicobaricus Redtenbacher, 1867:21; TL: India: Nicobar Islands: Faui; LT: Wewalka 1982:124 NMW; DESCR:Nakane 1993:3; N. COMB.: Biström 1988:27.
Genus Hydrovatus Motschulsky, 1853
Hydrovatus Motschulsky, 1853:4; type species: Hyphydrus cuspidatus Kunze, 1818:68.
Hydrovatus confertus Sharp, 1882
Hydrovatus confertus Sharp, 1882:329; TL: Thailand (Siam); LT: Vazirani 1970b:102 BMNH; DESCR: Bistrom 1997:524.
Hydrovatus bonvouloiri Sharp, 1882
Hydrovatus bonvouloiri Sharp, 1882:335; TL: India (India bor.); Syntypes BMNH; DESCR: Bistrom 1997:392.
Hydrovatus acuminatus Motschulsky, 1859
Hydrovatus acuminatus Motschulsky, 1859:42; TL: SE Asia (continent Indien); Syntypes; DESCR: Bistrom 1997:351.
Genus Hyphydrus Illiger, 1802
Hyphydrus Illiger, 1802:299; type species: Dytiscus gibbus Fabricius, 1777:238 (Dytiscus ovatus Linnaeus, 1761:547).
Hyphydrus birmanicus Regimbart, 1888
Hyphydrus birmanicus Regimbart, 1888:614; TL: Myanmar: Bhamo (Bhamo); LT: Vazirani 1977a:21 MNHN; DESCR: Bistrom1982:100.
Hyphydrus sumatrae Regimbart, 1880
Hyphydrus sumatrae Regimbart, 1880:211;
Genus Laccophilus Leach, 1815
Laccophilus Leach, 1815:84; type species: Dytiscus minutus Linnaeus, 1758:412.
Laccophilus anticatus anticatus Sharp, 1890
Laccophilus anticatus Sharp, 1890b:341.
Laccophilus chinensis Boheman, 1858
Laccophilus chinensis Boheman, 1858:21; TL: China: Hong Kong; LT: Wewalka 1975a:152 NHRS; DESCR. Brancucci1983b:329.
Laccophilus beroni Rocchi, 1986
Laccophilus Leach, 1815:84; type species: Dytiscus minutus Linnaeus, 1758:412. SOFM.
Laccophilus Leach, 1815:84; type species: Dytiscus minutus Linnaeus, 1758:412. Laccophilus flexuosus Aube, 1838
Laccophilus flexuosus Aube, 1838b:430;
Laccophilus indicus Gschwendtner, 1936
Laccophilus solutus var. indicus Gschwendtner, 1936:366; TL: India: Assam, Bengal, Punjab; Syntypes OLML; DESCR: Brancucci 1983b:322; N. STAT.: Brancucci 1983b:322.
Laccophilus inefficiens (Walker, 1859)
Hydroporus inefficiens Walker, 1859:51; TL: Sri Lanka; LT: Wewalka 1975a:152 BMNH; DESCR: Brancucci 1983b:332; N. COMB.: Sharp 1882:287.
Laccophilus medialis Sharp, 1882 Laccophilus medialis Sharp, 1882:309;
Laccophilus parvulus parvulusAube, 1838Laccophilus parvulusAube, 1838b:429;
Laccophilus ritsemaeRegimbart, 1880
Laccophilus ritsemae Regimbart, 1880:209; TL: Indonesia: Sumatra: Moaralabuh (Moeara Laboe); Holotype RMNH; DESCR:Brancucci 1983b:335.
Laccophilus sharpiRegimbart, 1889
Laccophilus sharpi Regimbart, 1889:151, by indiation to Laccophilusflexuosus Aube sensu Sharp 1882:310; TL
Laccophilus parvulus obtususSharp, 1882
Laccophilus obtusus Sharp, 1882:311; TL: Singapore; LT: Brancucci 1983b:361 BMNH; DESCR: Brancucci 1983b:360; N.STAT.: Brancucci 1983b:360.
Laccophilus uniformisMotschulsky, 1859
Laccophilus uniformis Motschulsky, 1859:46; TL: SE Asia (continent Indien); LT: Brancucci 1983b:367 ZMUM; DESCR:Brancucci 1983b:366.
Laccophilussp.
Genus Neptosternus Sharp, 1882
Neptosternus Sharp, 1882:286; type species: Neptosternus ornatus Sharp, 1882:317.
Neptosternus horaiVazirani, 1953
Neptosternus horaiVazirani, 1953:424; TL: India: Chennai (Madras): Hoganical Falls; Holotype ZSI; DESCR: Vazirani1969b:253.
FAMILY Noteridae
Genus Canthydrus Sharp, 1882
1882. Canthydrus Sharp, Sci. Trans. R. Dublin Soc.
Canthydrussp.
Genus Neohydrocoptus Sato 1972
Neohydrocoptus Sato, 1972: Annls Hist. Nat. Mus. Nat. Hung. 64:144.
Neohydrocoptus subvittulus Motschulsky, 1859.
Hydrocoptus subvittulus Motschulsky, 1859:48: Wehncke, 1883:148. Zimmermann, 1919a: 11: 1920.
Genus: Hydrocanthus Sharp, 1882
Hydrocanthus Sharp, 1882: Scient, Trans. R. Dublin Soc. 2(2): 268, 920.
Hydrocanthus guignoti Young, 1985
Hydrocanthus debilis Guignot 1957:5 (Central and South America) Hydrocanthus guignoti Young, 1985: Proceeding of theAcademy of Natural sciences of Philadelphia 137:90-98.
FAMILY: Haliplidae
Genus: Haliplus Latreille, 1802
1802. Haliplus Latreille, Hist. Nat. Crust. Ins. 3:77.
Haliplus manipurensis Vazirani
1966. Haliplus manipurensis Vazirani Proc. Zool. Soc. Calcutta 19: 132.
Haliplus sp.
FAMILY Gyrinidae
Genus: Dineutus Macleay, 1825
1825. Dineutus Macleay, Annulosa javanica., 1: 30.
Dineutus (Protodineutus) indicusAube, 1938
1938. Dineutus indicus Aube, Species coleopteres, 6: 772
Sub Order Polyphaga Emery, 1886
FAMILY Dryopidae Billberg, 1820
Genus: Elmomorphus Sharp, 1888
Elmomorphus Sharp, 1888: 242; Sato, 1985: 255; Kodada et al., 2003: 455; Satô and Yoshitomi, 2005: 636. Dryopidius Grouvelle, 1896: 33. Elmomorphellus Chujo and Sato, 1964: 193. Type species: Elmomorphus brevicornis Sharp, 1888: 243.
Elmomorphus brevicornis Sharp
Elmomorphus brevicornis Sharp, 1888: 243
(Natural History Museum, London): South Japan, Laccophilus Leach, 1815:84; type species: Dytiscus minutus Linnaeus, 1758:412. Laccophilus Leach, 1815:84; type species: Dytiscus minutus Linnaeus, 1758:412.
FAMILY: Hydraneidae
Genus: Ochthebius Leach, 1815
1815, Ochthebius Leach in Brewster’s Edinb. Enc., 9:95
Ochthebiussp.
FAMILY Helophoridae Leach, 1815
Genus: Helophorus Fabricius 1775
Helophorus sp.
FAMILY Hydrochidae Thomson 1859
Genus: Hydrochus Leach, 1817
1903. Hydrochus Leach, Zool. Misc, 3:90.
1924. Hydrochus Leach: Knisch, Col. Cat., 14 (Pars.79):96-104
Hydrochus annamita Regimbart,1903
1903. Hydrochus annamita Regimbart, Ann. Soc. Ent. Fr., 72:64
Hydrochus locustris Nietner, 1856
1856. Hydrochus locustris Nietner, Journ. As. Soc. Berg., 25:537.
Hydrochus spp.
FAMILY: Hydrophilidae Latreille, 1802
Sub family Shaeridiinae
Tribe I. Sphaeridiini Latreille, 1802
Genus: Sphaeridium Fabricius, 1775.
1775. Sphaeridium Fabricius, Syst. Ent., PP. 66.
1924. Sphaeridium Fabricius: Knisch, Col. Cat., 14 (Pars.79): 119-127.
Sphaeridium severini D'Orchymont 1919
1919. Sphaeridium severini d'orchymont, Ann. Soc. Ent. Fr. 88: 116, f 7.
1924. Sphaeridium severini: Knisch, Col. Cat., 14 (Pars 79): 127.4. S. severini d' orchymont, 1919
Sphaeridium quinquemaculatum Fabricius, 1798
1798. Sphaeridium quinquemaculatum Fabricius, Syst. Ent. Suppl., P: 39.
1924. Sphaeridium quinquemaculatum: Knisch, Col. Cat., 14 (Pars. 79): 124.
Genus Coleostoma Brulle, 1835
Coelostoma Brulle, 1835:293. Type species: Hydrophilus orbicularis, Fabricius 1775 (Monotypy)
Coelostoma subditum D'occhymont 1936
Genus Cercyon Leach, 1817
1817. Cercyon Leach, Zool. Misc., 3:95
1924. Cercyon Leach: Knisch, Col. Cat., 14 (Pars.79): 127-152.
Cercyon lineolatus Motschulsky, 1863
Trichopoda lineolata Motschulsky, 1863. Bull. Soc. Imp. Nat. Mosc. 36: 444.
Cercyon lineolatus: Sharp 1890. Trans. R. ent. Soc. Lond. 2: 357.
Cercyon (C. S. Str.) punctigerum Knisch
1921. Cercyon (C. S. Str.) pllnctigerllm Knisch, Archiv. Natllrg, 85 (A-8): 79.
Cercyon (Cercyon S. Str.) vicinalis Walker
1859. Cercyon (C. S. Str.) vicino/is Walker. Ann. Mag. Nat. Hist., (3) 3: 258.
1924. Cercyon (C. S. Str.) vicinalis: Knisch. Col. Cat., 14 (Pars. 79): 150.
Cercyon sp.
Genus 5. Dactylosternum Woll.; 1854
1854. Dactylostemum Woll., Ins. Mader. P. 99, t.3. f.
1. Dactylosternum hydrophiloid es M'cLeay 1825.
1825. Dacty/osternum hydrophiloides M'Leay, Annul. lavan. P:
36. Dactylosternum abdominale Fabricius, 1792
1792. Dactylosternum abdominale F., Ent. Syst. 1:
79.Genus: Oosternum Sharp, 1882
1882. Oosternum Sharp, Bioi. Centro Amer. 1: 112.
1924. Oosternum: Knisch, Col. Cat., 14 (Pars 79):
154. Oosternum horni d' orchymont, 1914
1914. Oosternum horni d'orchymont. Em. Millei, 3: 326, f.2, P.
327. Tribe III. Megastemini
Genus: Pachysternum Motsch, 1863
1863. Pachysternum Motsch, Bull. Soc. Imp. Nat. Moscoll. 36: 446.
Pachysternum coomani d'Orchymont 1926
1926. Pachyslernum coomani d'Orchymont, Ann. &: Bull. Soc. Ent. Belg., 66: 221. 225.
Pachysternum nigrovittatum Motsch. 1863
1863. Pachystemum nigrovittatum Motsch, Bull. Soc. Imp. Nat. Moscou, 36: 447, 1. 9, f. 22.
Subfamily IV. Hydrophilinae Latreille, 1802
Tribe I. Acidocerini Zaitzev, 1908
Genus: Helochares Mulsant, 1844
Helochares Mulsant, 1844, Palp. P. 197
Helochares: Knisch, 1924, Col. Cat., 14 (Pars 79): 192-199.
Helochares pallens MacLeay, 1825
1825: Enhydrus pallens MacLeay, Annul. Javan. P. 35.
1924. Helochares pallens: d’ Orchymont, Ann. Bull. Soc. Ent. Belg. 66:232.
Helochares anchoralis Sharp 1890
1890. Helochares anchoralis Sharp, Trans. Ent. Soc. Lond. P: 352.
Helochares atropiceus Regimbart, 1903
Helochares atropiceus Regimbart, 1903, Ann. Soc. Ent. F. 72:53
Helochares crenatusRegimbart, 1903
1903. Helochares crenatus Regimbart, Ann. Soc. Ent. Fr.72: 54.
Helochares lentus Sharp 1890
1890. Helochares lentus Sharp. Trans. Ent. Soc. Lond. P: 352.
1924. Helochares lentus: Knisch., Col. Cat., 14 (pars.79): 193.
Helochares taprobanicus Sharp
1890. Helochares taprobanicus Sharp, Trans. Ent. Soc. Lond. p: 351.
1924. Helochares taprobanicus: Knisch, Col. Cat., 14 (pars. 79): 199.
Genus Chasmogenus Sharp, 1882
Chasmogenus Sharp, 1882:73. Crephelochares Kuwert, 1890:38. Syn.:d’Orchymont 1919:148.
Chasmogenous abnormalis Sharp, 1890.
Philydrus abnormalis Sharp, Trans Ent. Soc. London, 1890:351. Phylhydrus ferrugatus Regimbart, Ann. Soc. Ent. France, 72,1903:57. Enochrus abnormicollis Zaitzev, Hor. Soc. Ent. Ross, XXXVIII, 1908: 385.
Genus Enochrus Thomson, 1859
1859. Enochrus Thoms, Skand. Col., 1:18
1924. Enochrus: Knisch. Col. Cat., 14 (Pars. 79): 200-219.
Enochrus nigropiceus Motschulsky, 1861
Philhydrus nigropiceus Motschulsky 1861:109. Enochrus (Lumetus) nigropiceus (Motschulsky): Zaitzev 1908: 388. Enochrus (Methydrus) nigropiceus (Motschulsky): Hebauer 2001: 21.
Enochrus (Methydrus) esuriens Walker, 1858
Enochrus (Lumetus) esuriens Walker, 1858:209. Enochrus (Lumetus) esuriens Walker: Knisch 1924:208. Enochrus (Methydrus) esuriens Walker: Orchymont 1928: 112.
Enochrus rubocintus Regimbart, 1903
1903. Philhydrus rubocintus Regimbart, Ann. Soc. Ent. Fr. 72: 214
Enochrus sp.
Tribe II. Hydrophilini Latreille, 1802
Genus Sternolophus Solier, 1834
1834. Sternolophus Solier, Ann. Soc. ent. Fr. 3:302-310.
Genus Hydrophilus Muller, 1764
1764. Hydrophilus Muller, Fauna Ins. Fridrichsdal, P.16.1980. Hydrophilus Smetna, Mem. Ent. Soc. Canada, 111:10-11. Hydrophilus Biswas and Mukhopadhyay, Zool. Surv. India, State Fauna Series 3: 1995. Fauna of West Bengal, Part 6 (A): 159-161.
Hydrophilus
Hydrophilus olivaceous Fabricius, 1781
1781. Hydrophilus olivaceous Fabricius 1781, Spec. ins. 1: 289.
Hydrophilus indicus Bedel 1892
1892. Hydrous indicus Bedel, Rev. d 'Ent., 10: 310. 316.
1893. Hydrophilus indicus, Kuwert, Deut. Ent. 'Zeit., P.88.
Hydrophilus temnopteroides d'Orchymont 1913
1913. Hudrous temnopteroides d'Orchymont, Ann. Soc. Ent. Belg. 57: 319.
1924. Hydrous temnopteroides, Knisch, Col. Cat. 14: (Pars 79): 257-258.
Hydrophilus sp. Laccophilus Leach, 1815:84; type species:Dytiscus inutesLinnaeus, 1758: 412.
Genus Tropisternus Solier, 1834
Tropistrenus Solier, 1834:302, Type species: Hydrophilus lateralis Fabricius 1775 (des. Brulle, 1835)
Tropisternus sp.
Tribe III. Amphiopini Short & Fikacek, 2013
Genus Amphiops Erichson, 1843
1843. Amphiops Erichson, Archiv. Naturg., 9(1): 229.1924. Amphiops Erichson, Knisch, Col. Cat. 14 (pars. 79): 259-260.
Amphiops simplex Sharp, 1890
1890. Amphiops simplex Sharp, Trans. Em. Soc. Lond. P.354.
Amphiops pedestris Sharp 1890
1890. Amphiops pedestris Sharp, Trans. Ent. Soc. London, p: 354.
1924. Amphiops pedestris Knisch, Col. Cat. 14 (Pars.79): 260.
Amphiops mirabilis Sharp, 1890
Tribe IV. Berosini Mulsant, 1844
Genus: Berosus Leach, 1817
1817. Berosus Leach, Zool. Misc., 3: 92.
1924. Berosus Leach; Knisch. Col. Cat. 14 (pars. 79): 261-276.
Berosus fairmairei Zaitzev 1908
1908. Berosus /airmairei Zaitzev, Horae Soc. Ent. Ross, 38: 355.LaccophilusLeach, 1815:84; type species: Dytiscus minutus Linnaeus, 1758:412.31. Berosus pulchellus M'Leay 1825
1825. Berosus pulchellus M'Leay, Annul. Jav. P: 35.
Berosus indicus Motschulsky 1861
1861. Berosus indicus Mots., Bull. Soc. Imp. Nat. Moscou. 34: 110.
Genus Regimbartia Zaitz, 1908
Regimbartia Zaitz, 1908, Horae Soc. Ent. Ross, 38: 362 (Catal).
Regimbartia attenuata Fabricius, 1801.
1801. Regimbartia attenuata F., Syst. Eleuth., 1: 235 (Hydrophilus).
1995. Regimbartia attenuate Biswas and Mukhopadhyay, Zool. Surv. India, State Fauna Series 3: Fauna of West Bengal, part 6(A): 163.
Tribe Anacaenini Thomson, 1859
Genus 2. Paracymus Thomson 1867
1867. Paracymus Thomson, Skand. Col. 9: 119-120.
1924. Paracymlls Thomson, Col. Cal., 14 (79): 164-168
Paracymus sp.
Tribe Laccobiini Bertrand, 1954
Genus Laccobius Erichson, 1837
1937. Laccobius Erichson.
Laccobius sp.
Family: Curculionidae Latreille, 1802
Genus Neochetina Hustache, 1926
Neochetina bruchi Hastache 1926
Neochetina sp.
Family: Chrysomelidae Latreille, 1802
Genus: Donacia Fabricius, 1775
Donacia Fabricius, 1775; Type species: Donacia crassipes, Fabricius 1775.
Donacia sp.
FAMILY Histeridae Gyllenhal, 1808
Genus: Histerus
Histerus sp.
FAMILY Scirtidae Fleming, 1821.
Genus: Scirtid
Limnicus sp.
FAMILY Staphylinidae Latreille, 1802
Genus: Paedrus
Paedrus sp.
The authors are thankful to the Council of Scientific and Industrial Research (CSIR), PUSA, New Delhi for giving financial assistance of MRP Ref. no.37 (1633)/14/EMR-II during the course of the work. Thanks are also due to the Principal and Head, PG
Department of Zoology, DM College of Science, Imphal for providing laboratory facilities.