Subgenus Pachydinodes Kuntzen, 1919

Chlaenius (Pachydinodes) hamifer Chaudoir, 1856

Chlaenius bihamatus Chaudoir, 1856 a junior synonym of this species was described from specimens originating in Hong Kong, and is listed under that name by Chaudoir (1876b) and Bates (1889). Andrewes (1919a) questioned whether these specimens originated from Hong Kong "when C. bihamatus was described (Bull. Mosc. 1856, iii, 210). Chaudoir said he had received two examples taken by Capt. Boys in N. India, and another from Tranquebar; C. hamifer (I.c. 209) was said to come from Java. In the Monograph (Ann. Mus. Civ. Gen. 1876, 62) he tells us that he has two examples of C. bihamatus from Java and one from Hong-Kong, while G. hamifer now inhabits " toute la presqu'ile Cisgangetique." It is evident to me that in 1856 he transposed the localities, but no word of this appears in the Monograph, where the necessary rectification is made.Listed as occuring in Hong Kong by Saha et al. (1992). Material: 1 ex. Hong Kong, Lantau, Pui O, 18.iii.09, under stone; 2 exx. Hong Kong, Lantau, Pui O, 20.iii.07, under stone; Sight record 1 ex. Hong Kong, Lantau, Pui O, 8.iv.09; Sight record 1 ex. Hong Kong, Lantau, Pui O, 13.iv.08; Sight record 1 ex. Hong Kong, Lantau, Pui O, 14.iv.08; 1 ex. Hong Kong, Lantau, Pui O, 5.vi.12, under stone; Sight record 1 ex. teneral specimen, Hong Kong, Lantau, Shap Long, 1.v.15, under stone in dry marsh; Ƌ W.T.L., 15.vii.13; Sight record, Hong Kong, Lantau, Pui O, 23.ix.08; 1 ex. Hong Kong, Lantau, Shap Long, 28.ix.13, many seen; Sight record W.T.L., 2.x.13; 1 ex. Hong Kong, Lantau, Pui O, 14.x.06, under stone in damp area of dry marsh; 1 ex. Hong Kong, Lantau, Pui O, 21.xi.09, under stone. Biology: Imago found March to November. Freshwater and saltwater marsh. Attracted to light and fully winged.

Chlaenius (Pachydinodes) leucops Wiedemann, 1823

New record for Hong Kong. Identification confirmed by Lian Hong-bin (pers. comm.). Material: 1 ex. W.T.L., 27.vi.11; 3 exx. Hong Kong, Lantau, Pui O, 28.xii.12, under stone in dry marsh. Biology: Imago found June and December. Fresh water marsh. Attracted to light and fully winged.

Chlaenius (Pachydinodes) pictus Chaudoir, 1856

Bates (1873) lists this species as occurring in Hong Kong. Kirschenhofer (2003a) however does not list Hong Kong under this species' distribution.

Chlaenius (Pachydinodes) virgulifer Chaudoir, 1876

Chaudoir (1876b) described this species from seven Hong Kong specimens and two from Northern China.