Annotated catalogue of the Haliplidae of China with the description of a new species and new records from China (Coleoptera, Adephaga)

Abstract A revised checklist of Haliplidae (Coleoptera: Adephaga) of China is presented. A new species Haliplus (Haliplus) latreillei sp. n. is described from Guizhou, China. Three species, Haliplus (Haliplidius) confinis Stephens, Haliplus (Haliplus) ruficollis (De Geer) and Haliplus (Haliplus) sibricus Motschulsky are reported from China for the first time. Haliplus dalmatinus Müller is excluded from the list of Chinese species. A number of new provincial records from China is presented.

The studies of the material of the Haliplidae deposited in the Coleoptera collection of the Sun Yat-sen University in Guangzhou, China and in several European collections result in a considerable extension on the knowledge of Chinese Haliplidae. This justifies a review of the species known so far from China, specified to the provinces in which they are found. In the present paper one new species of Haliplus is described and other three species of Haliplus are reported as new for China. Including this study 29 species are now known from China.

Material and methods
The present paper is based predominantly on 600 specimens of the family Haliplidae deposited in the Coleoptera collection of the Sun Yat-sen University (SYSU) in Guangzhou (Guangdong, China). All these specimens were identified by the first author and 25 specimens were re-examined by the second author. The second author examined another 210 specimens from the National Museum Prague, Czech Republic (NMPC); Naturhistorisches Museum Basel, Switzerland (NHMB), the Snow Entomological Collections of the University of Kansas, Lawrence, Kansas, USA (SEMC), the collection of F. Angelini, Brindisi, Italy (CA), the collection of H. Fery, Berlin, Germany (CF), the collection of A. Nilsson, Umeå, Sweden (CN) and second author's own collection (CV).
Head. Dark brown, somewhat lighter between eyes, anterior margin of clypeus densely punctured, but with much stronger and sparser punctures between eyes. Labrum yellowish brown with dark spot in the middle. Distance between eyes 1.6× width of one eye. Antennae light yellowish brown, not darkened apically. Palpi yellowish brown.
Pronotum. Yellow to yellowish brown. Without basal plicae, strongly and densely punctured. Lateral sides margined, straight to slightly convex. Base a little narrower than elytra at base.
Elytra. Yellowish brown, with dark interrupted lines on primary punctures rows, darkened along suture, with vague dark marks connecting primary puncture rows, without dark band basally. Completely margined. Primary puncture rows moderately strong and dense, 38-39 punctures in row 1. Secondary punctures moderately strong and dense along suture, moderately strong and much sparse on intervals. All punctures darkened.
Ventral side. Brown red, with legs and anterior 1/fifth of prosternal process yellow brown; elytral epipleura yellowish brown with strong darkened punctures, reaching to abdominal sternite 6. Prosternal process narrowed between coxae, grooved along each side, anterior edge not margined, with moderately strong punctation. Metaventral process slightly bulbous with a row of strong punctures on each side that is slightly impressed, else moderately punctured (Fig. 2). Metacoxal plates reaching to fifth sternite, moderately strongly punctured, near suture weakly punctured, row of setae on posterior edge (Fig. 3). Fifth and sixth abdominal sternite each with sparse transverse puncture row. Last abdominal sternite weakly punctured in apical portion. No setiferous striole present on dorsal face of hind tibia, longer tibial spur of hind legs with dense teeth on inner side, about 2/3× length of first metatarsomere.
Female. Unknown. Etymology. The species is named in honour of Pierre André Latreille (1762-1833), a French entomologist who firstly used Haliplus as the genus name in 1802. Differential diagnosis. This species is close to H. japonicus Sharp, 1873 andH. regimbarti Zaitzev, 1908 in body size and shape, arrangement of elytral dark spots and black lines, punctuation and the row of setae on posterior edge of the metacoxal plates. However, the new species lacks pronotal basal plicae, its pronotum lacks the transverse basal rim and it differs from the above species in the shape of the median lobe and parameres of the aedeagus. Despite the absence of pronotal plicae this species clearly belongs to the subgenus Haliplus s. str. due to the absence of the metatibial setiferous striole.
Distribution. Only known from the type locality.