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A new species of Hyphydrus Illiger 1802 (Coleoptera Dytiscidae) from West New Guinea, and notes on other species of the genus
Abstract
Hyphydrus dani n. sp. is described from the highlands of West New Guinea. This species is probably the sister species of H. elegans (Montrouzier 1860). In addition, collecting notes on H. dani and H. lyratus Swartz 1808 are provided. The latter is reported from Bali, Lombok, Flores and Ceram for the first time, and the Balinese locality represents the first report of the species from paddy field waters. Faunistic data on H. decemmaculatus Wehncke 1877 and H. elegans as well as notes on the type material of H. curvipes Régimbart 1892 and of H. gibbicollis Régimbart 1892 are reported.
... This species seems to prefer sunny or partly shaded habitat with sand or clay on the bottom and not too strongly vegetated. Other species it was associated with were: Exocelina baliem Shaverdo, Hendrich & Balke, 2013, Hydrovatus enigmaticus Biström, 1997, Hyphydrus dani Biström, Balke & Hendrich, 1993, Hydaticus okalehubyi Balke & Hendrich, 1992, H. rivanolis Wewalka, 1979, and Rhantus dani Balke, 2001(Shaverdo et al. (2013, Biström et al. (1993), Balke and Hendrich (1992), Balke (2001). Limbodessus baliem, female, habitus. ...
Background:
To date only one species of Limbodessus diving beetles has been reported from the Island of New Guinea, L. compactus (Clark, 1862), which is widerspread in the Australian region.
New information:
We describe two new species of microendemic New Guinea Limbodessus and use a compact descriptive format flanked by enriched online content in wiki powered species pages. Limbodessus baliem sp.n. is described from ca. 1,600 m altitude in the Baliem Valley of Papua and Limbodessus alexanderi sp.n. from >3,000 m altitude north of Sugapa, Papua. Based on our analysis, we also transfer three species from other genera to Limbodessus Guignot, 1939, with the following changes: Limbodessus deflectus (Ordish, 1966), new combination; Limbodessus leveri (J. Balfour-Browne, 1944), new combination; and Limbodessus plicatus (Sharp, 1882), new combination.
... Hyphydrus (Biström, 1982;Biström et al., 1993;Hendrich & Balke, 1995). Singapore! ...
The present paper is the first comprehensive review of the aquatic Coleoptera, or water beetles, of Singapore. A total of 93 species are reported here. They are: Noteridae (9), Gyrinidae (9), Dytiscidae (35), Spercheidae (1 ), Hydrophilidae (30), Hydraenidae (3), Limnichidae (3), Curculionidae (2), and Chrysomelidae (1). The water beetle fauna of Singapore is mainly Oriental with a high percentage of Sundaic faunal elements. Thirty species (32%) are first recorded for Singapore. However, eight species are believed to be locally extinct, and 27 species (29%) are listed as threatened. The main causes of species becoming endangered are deforestation and change of ground water level in the vicinity of springs; as well as waste water pollution and infill. The water beetle communities of the main habitat types are briefly outlined. For each species all literature references are cited, and the distribution and ecology are described. A brief account on the conservation status and future prospects of Singapore's aquatic beetle fauna is given. The dytiscid species Copelatus andamanicus Régimbart, 1899, is here suggested to be a junior subjective synonym of C. oblitus Sharp, 1882.
... Hyphydrus (Biström, 1982;Biström et al., 1993;Hendrich & Balke, 1995). Singapore! ...
The present paper is the first comprehensive review of the aquatic Coleoptera, or water beetles, of Singapore. A total of 93 species are reported here. They are: Noteridae (9), Gyrinidae (9), Dytiscidae (35),
Spercheidae (1), Hydrophilidae (30), Hydraenidae (3), Limnichidae (3), Curculionidae (2), and Chrysomelidae (1). The water beetle fauna of Singapore is mainly Oriental with a high percentage of Sundaic faunal elements. Thirty species (32%) are first recorded for Singapore. However, eight species are believed to be locally extinct, and 27 species (29%) are listed as threatened. The main causes of species becoming endangered are deforestation and change of ground water level in the vicinity of springs; as well as waste water pollution and infill. The water beetle communities of the main habitat types are briefly outlined. For each species all literature references are cited, and the distribution and ecology are described. A brief account on the conservation status and future prospects of Singapore’s aquatic beetle fauna is given. The dytiscid species Copelatus andamanicus Régimbart, 1899, is here suggested to be a junior subjective synonym of C. oblitus Sharp, 1882.
... Widely distributed in the Oriental region and Australia, this species is frequently collected at light (Biströ m 1982). Data on habitat preferences of the species are provided by Biströ m et al. (1993) and Hendrich and Balke (1995). The material studied from Myanmar is entirely represented by specimens collected at light. ...
Five species of the genus Hyphydrus Illiger are reported from Myanmar based on the study of recently collected material and literature sources. Data on their ecology and distribution are presented. Hyphydrus schillhammeri sp.n. is described from Shan State of Myanmar and deemed to belong to the signatus-group of species. A key to identification of and comparisons between the new species and other species of the group are given.
Among the hundreds of thousands of species of beetles, there is one family, containing some 4,300 species, that stands out as one of the most diverse and important groups of aquatic predatory insects. This is the Dytiscidae, whose species are commonly known as diving beetles. No comprehensive treatment of this group has been compiled in over 130 years, a period during which a great many changes in classification and a near quadrupling of known species has occurred. In Diving Beetles of the World, Kelly B. Miller and Johannes Bergsten provide the only full treatments of all 186 Dytiscid genera ever assembled. Entomologists, systematists, limnologists, ecologists, and others with an interest in aquatic systems or insect diversity will find these extensively illustrated keys and taxon accounts immensely helpful. The keys make it possible to identify all taxa from subfamily to genera, and each key and taxon treatment is accompanied by both photographs and detailed pen-and-ink drawings of diagnostic features. Every genus account covers body length, diagnostic characters, classification, species diversity, a review of known natural history, and world distribution. Each account is also accompanied by a range map and at least one high-resolution habitus image of a specimen. Diving beetles are fast becoming important models for aquatic ecology, world biogeography, population ecology, and animal sexual evolution and, with this book, the diversity of the group is finally accessible.
Twenty-nine species of the genus Hyphydrus have so far been recorded from the Australasian and Oriental zoogeographical regions. The distribution of the species is given at the country-level. A key for the determination of species (males only) is presented. Hyphydrus bistrimaculatus, new species, is described on the basis of 12 specimens from the Aru Islands, Indonesia.
The systematics of New Guinean Colymbetini is revised. All of the species aremontane and/or subalpine, and include:Carabdytes upin Balke, Hendrich & Wewalka, 1992;Rhantus suturalis (MacLeay, 1825)s.l.; R. papuanus Balfour-Browne,1939; and R. ekari Balke & Hendrich, 1992a. Thefollowing new species are described: R. anggi, sp. nov.;R. bacchusi, sp. nov.; R. dani,sp. nov.; R. kakapupu, sp. nov.;R. riedeli, sp. nov.; andR. supranubicus, sp. nov.Rhantus neoguinensis Guéorguiev & Rocchi,1993 is a junior subjective synonym of R. suturalis s.l.All New Guinean Rhantus Dejean, 1833 belong to themonophyletic R. suturalis-group. Within that group,Rhantus simulans Régimbart, 1908 (southwestAustralia),R. dani, R. suturalis,R. ekari and R. kakapupu form amonophyletic subgroup; the latter two are sister-species. TheR. suturalis-group is suggested to be of Holarcticorigin. Possible scenarios that may explain the biogeographical history ofthis tribe in the Indo-Australian region are discussed. No evidence was foundfor monophyly of New Guinean Rhantus. Thebiogeographical history of Carabdytes upin remainsenigmatic. New Guinean Rhantus inhabit swamps atlakeshores, ponds and ditches, while C. upin Balkeet al., 1992 is a rheobiont. A checklist of worldspecies of the R. suturalis-group is provided.
Wamena (near Baliem river), 1700 m, IR 92-54 & 92-57, 23-28.VIII
- Exx
5 exx."W.-Neuguinea, Baliem Valley, Wamena (near Baliem river), 1700 m, IR 92-54 & 92-57, 23-28.VIII.1992, leg. M. Balke" (cBH).
Balke and L. Hendrich Fig. 10. -Station sampled: Irian Jaya, pool near Wamena
- M Bistrom
Bistrom, M. Balke and L. Hendrich Fig. 10. -Station sampled: Irian Jaya, pool near Wamena (IR 92-57).
FL 1-Flores, near Ruteng, 900 m, 26.VIII.1991, M. Balke leg
- Florescbh
- Mzh
- Zmb
Flores: 4 exx., "FL 1-Flores, near Ruteng, 900 m, 26.VIII.1991, M. Balke leg." (cBH, MZH, ZMB);
Ruteng and Mborong, 1200 m, 28.VIII.1991, Balke leg See Figs 10 and 11. Ceram: 15 exx.,"near Wahai Collecting notes. Bali. Collected from emergent vegetation, chiefly grasses Site was exposed, bottom was of clay
- Flores
- Danau Ranamesecbh
- Mzh Yano
2 exx.,"FL 3-Flores, Danau Ranamese, betw. Ruteng and Mborong, 1200 m, 28.VIII.1991, Balke leg." (cBH, MZH). See Figs 10 and 11. Ceram: 15 exx.,"near Wahai, 12.11.89 (10), S. Schodlleg." (NHMW); 18 exx., idem (12), M. Jach leg. (NHMW). Collecting notes. Bali. Collected from emergent vegetation, chiefly grasses, at the edge of a paddy field (Fig. 11), (Ta 26.4, Tw 22.8, 9:00). Site was exposed, bottom was of clay. This species has not yet been recognized as occurring in paddy waters (YANO et al. 1983).
Specimens were collected from a helocrene with comparatively cold water (M.A. }A.cH pers
- Lombok
Lombok. Specimens were collected from a helocrene with comparatively cold water (M.A. }A.cH pers. comm.).
semi-shaded, bottom chiefly of gravel and few leaves, pH 6.0-6.5, water cool (Fig. 12), (FL 1). The species was also captured from mats of floating vegetation at the edge of a lake (Fig. 13), (FL 3), bottom was gravel, semi-shaded
- Flores
Flores. Collected from a waterhole near a larger stream, semi-shaded, bottom chiefly of gravel and few leaves, pH 6.0-6.5, water cool (Fig. 12), (FL 1). The species was also captured from mats of floating vegetation at the edge of a lake (Fig. 13), (FL 3), bottom was gravel, semi-shaded, pH 6.5-7.0, water cool. Ceram. Collected from pools (M.A. JXcH pers. comm.).
Recent West, as well as Papua New Guinean records are: West New Guinea: 45 exx., "IR 10-W. New Guinea MZH), altitude about 4-10 m a.s.l.; 135 exx
- Bpbm
- Cbh
- Zmb Mzh
Another subspecies, H. lyratus foveolatus Regimbart 1892, is known from PNG (BrsTROM 1982). Recent West, as well as Papua New Guinean records are: West New Guinea: 45 exx., "IR 10-W. New Guinea, Nabire (Kali Bobo), 19, 20 and 26.IX.1990, M. Balke & L. Hendrich leg." (cBH, MZH), altitude about 4-10 m a.s.l.; 135 exx., "IR 22-W. New Guinea, track Nabire-Ilaga km 34, 120m, 23.VII.1991, M. Balke & L. Hendrich leg." (BPBM, cBH, MZH, ZMB), see Fig. 12.
Viaggio di Lamberto Loria nella Papuasia orientale. IV. Haliplidae, Dytiscidae et Gyrinidae
- Regimbart M
REGIMBART M. 1892. Viaggio di Lamberto Loria nella Papuasia orientale. IV. Haliplidae, Dytiscidae et Gyrinidae. Annali del Museo Civico di Storia Naturale di Genova (2) 10: 978-997.