Hydrovatus asymmetricus sp. n. (Coleoptera, Dytiscidae) - an enigmatic species from Southeast Asia

Hydrovatus asymmetricus sp. n. is described from Kamputchea, Burma and Indonesia (Java), and its enigmatic systematic position is discussed

A systematic review of the tribes Hyphydrini Sharp and Pachydrini n. trib. (Coleoptera, Dytiscidae)

Based on a phylogenetic study using adult morphology, the tribe Hyphydrini is redefined as including the following 12 genera: Andex Sharp, Coelhydrus Sharp, Darwinhydrus Shnp, Hydropeplus Sharp, Primospes Sharp, Hyphovatus Wewalka & Biström, Agnoshydrus n. gen. (contains two species: A. laccophiloides (Régimbart) and A. densus n. sp.), Microdytes J. Balfour-Browne, Allopachria Zimmermann, Hyphydrus Illiger, Hovahydrus Biström, and Desmopachria Babington. The two genera Heterhydrus Fairmaire and Pachydrus Sharp are transferred to Pachydrini n. trib. All genera in the two tribes are reviewed including descriptions and check lists. The phylogenetic analysis provided support for the monophyly of each of the genera Allopachria and Desmopachria, whereas that of Microdytes, Hyphydrus and Hovahydrus is considered doubtful. An identification key is provided for the genera and subgenera of both tribes. The following n. comb. are given: Microdytes pasiricus (Csiki, 1938) previously in Hydrovatus and Agnoshydrus laccophiloides (Régimbart, 1888) previously in Microdytes

Testing for aerobic heterotrophic bacteria allows no prediction of contamination with potentially pathogenic bacteria in the output water of dental chair units

Background: Currently, to our knowledge, quality of output water of dental chair units is not covered by specific regulations in the European Union, and national recommendations are heterogeneous. In Germany, water used in dental chair units must follow drinking water quality. In the United States of America, testing for aerobic heterotrophic bacteria is recommended. The present study was performed to evaluate whether the counts of aerobic heterotrophic bacteria correlate with the presence of potentially pathogenic bacteria such as Legionella spp. or Pseudomonas aeruginosa

New and little known species of Hydroglyphus (Coleoptera: Dytiscidae) from Arabia and adjacent areas

Hájek, Jiří, Wewalka, Günther (2009): New and little known species of Hydroglyphus (Coleoptera: Dytiscidae) from Arabia and adjacent areas. Acta Entomologica Musei Nationalis Pragae 49 (1): 93-102, DOI: http://doi.org/10.5281/zenodo.531922

Microdytes

Key to specimens of Microdytes from India 1 Punctures on metacoxae moderately course to very course......................................................................................... 2 - Punctures on metacoxae missing or very fine.............................................................................................................. 7 2 Punctures on metacoxae very course and regular......................................................................................................... 3 - Punctures on metacoxae moderately course and irregular............................................................................................ 6 3 Body oblong-oval, moderately convex; TL: 1.90–2.50 mm......................................... M. championi Balfour-Browne - Body globular, strongly rounded.................................................................................................................................. 4 4 Pronotum and elytra predominantly yellowish-brown; TL: 1.90–2.15 mm................................... M. sabitae Vazirani - Pronotum and elytra predominantly red-brown to dark-brown.................................................................................... 5 5 Elytral punctation consisting of coarse and fine punctures; TL: 1.55–1.80 mm ............................... M. svensoni sp. n. - Elytral punctation consisting of one kind of coarse punctures; TL: 170– 1.90 mm ................ M. belli Balfour-Browne 6 Body oblong-oval, elytral punctation fairly fine and regular; TL: 1.60–1.90 mm ........... M. maculatus (Motschulsky) - Body regularly oval, elytral punctation consisting of strong and fine punctures; TL: 1.60–1.90 mm........................... ........................................................................................................................... M. elgae Hendrich, Balke & Wewalka 7 Body regularly oval, punctation on head and pronotum distinct; TL: 1.40–1.50 mm .......... M. schoenmanni Wewalka - Body oblong-oval, punctation on head and pronotum very fine to almost missing..................................................... 8 8 Body dorsoventrally compressed, elytra predominantly yellow-brown; TL: 1.33–1.53 mm ............. M. whitingi sp. n. - Body moderately convex, elytra predominantly red-brown to dark brown.................................................................. 9 9 Larger species, head and pronotum predominantly dark brown to black; TL: 1.30–1.45 mm ...... M. boukali Wewalka - Smaller species, head and pronotum predominantly red-brown; TL: 1.19–1.30 mm ...................... M. cameroni sp. n.Published as part of Miller, Kelly B. & Wewalka, Günther, 2010, Microdytes Balfour-Browne of India with description of three new species (Coleoptera: Dytiscidae: Hydroporinae), pp. 26-36 in Zootaxa 2420 on page 27, DOI: 10.5281/zenodo.20474

Microdytes schoenmanni Wewalka

Microdytes schoenmanni Wewalka Microdytes schoenmanni Wewalka 1997: 34; Nilsson 2001: 229; Nilsson 2003: 75. Distribution. Thailand; Nepal; India: Darjeeling (Fig. 13).Published as part of Miller, Kelly B. & Wewalka, Günther, 2010, Microdytes Balfour-Browne of India with description of three new species (Coleoptera: Dytiscidae: Hydroporinae), pp. 26-36 in Zootaxa 2420 on page 35, DOI: 10.5281/zenodo.20474

Microdytes belli J. Balfour-Browne

Microdytes belli J. Balfour-Browne Microdytes belli J. Balfour-Browne 1946: 106; Vazirani 1968: 103: Vazirani 1969: 302; Vazirani 1977: 24; Sato 1981: 68; Biström, Nilsson & Wewalka 1997: 75; Wewalka 1997: 19; Nilsson 2001: 228. Material examined. 1 ♂, India, W, Maharashtra state, 4 km S of Lonavala, Bhoshi dam env., 500 m, 12.- 15.x.2005, J. Bezděk leg. (NMPC); 1 ex., India, W, Maharashtra state, 40 km W of Pune, Ulshi env., 7.- 11.x.2005, J. Bezděk leg. (NMPC); 4 ex., India, Maharashtra, 120 km NE of Mumbai, Igatpuri env., 19°42.17’N 73°33.06’E, 600 m, 1.-12.viii.2002, P. Šípek & M. Fikáček leg., J. Hájek det. (NMPC); 1 ♂, India, Goa, 30 km S of Marao [=Madgaon], Palolem env., 15°00.47’N, 74°01.58’E, 0-20 m, 12.-14.viii.2002, P. Šípek & M. Fikáček leg., J. Hájek det. (NMPC); 3 ex., INDIA, Kerala, 10 km WSW Munnar, Kallar Valley, 1000 m, 10°03’N 76°58’E, 7.i.1999, leg. D. Boukal (50) (NHMW, CGWW); 3 ex., INDIA, Tamil Nadu, Palni Hills, Kodaikanal env., Vellagavi, 900 m, 10°11’N 77°29’E, 13.i.1999, leg. D. Boukal (62) (NHMW, CGWW); 1 ex., INDIA, Tamil Nadu, Shevaroy Hills, Yercaud, Kiliyur Falls env., 1400 m, 11°47’N 78°12’E, 25.i.1999, leg. D. Boukal (85) (NHMW). Distribution. India: Maharashtra, Karnataka, Goa (new record), Kerala (new record), Tamil Nadu (new record) (Fig. 13).Published as part of Miller, Kelly B. & Wewalka, Günther, 2010, Microdytes Balfour-Browne of India with description of three new species (Coleoptera: Dytiscidae: Hydroporinae), pp. 26-36 in Zootaxa 2420 on pages 33-34, DOI: 10.5281/zenodo.20474

Microdytes championi J. Balfour-Browne

Microdytes championi J. Balfour-Browne Microdytes championi J. Balfour-Browne 1946: 107; Vazirani 1969: 303; Sato 1981: 68; Biström, Nilsson & Wewalka 1997: 75; Wewalka 1997: 21; Nilsson 2001: 228; Nilsson 2003: 75. Material examined. 41 ex., India, Darjeeling, Saruk, 700 m, Baghi Tar, 19.vii.1985, leg. Ch. J. Rai (NHMB, CGWW); 1 ex., India, Darjeeling, Kalimp., 800 m, Upper Janake, 17.iv.1987, leg. Ch. J. Rai (NHMB); 1 ex., India, Darjeeling, Pudung, 900 m, 18.iv.1990, leg. Ch. J. Rai (NHMB). Distribution. Nepal; India: Uttar Pradesh, Darjeeling (new record) (Fig. 13).Published as part of Miller, Kelly B. & Wewalka, Günther, 2010, Microdytes Balfour-Browne of India with description of three new species (Coleoptera: Dytiscidae: Hydroporinae), pp. 26-36 in Zootaxa 2420 on page 34, DOI: 10.5281/zenodo.20474