Kovács I. (szerk.): A Magyar Természettudományi Múzeum évkönyve 78. (Budapest 1986)

Rougemont, G. M.: New Stiliderus Motschulsky species from the Indo-Australian Region (Coleoptera, Staphylinidae)

ANNALES HISTORICO-NATURALES MUSEI NATION ALI S HUNGARIC1 Tomus 78. Budapest, 1986 p. 79-82. New Stiliderus Motschulsky species from the Indo-Ausíralian Region (Coleoptera, Staphylinidae)* by G. M. DE ROUGEMONT, London Abstract

— A list is given of material studied, including new records. The aedeagus of S. kiloloensis (LAST) is figured for the first time; S. loksai sp. n.. S. wauensis sp. n., S. maritimus sp. n. and 5. madangensis sp. n. are described, and a plate of figures is given of the aedeagi of the nine species now known belonging to the New Guinea hieroglyphicus group. With 10 figures. Thanks to the kindness of DR. O. MERKL I have been able to examine material of the genus Stiliderus (sensu lato: BLACKWELDER 1939, & ROUGEMONT) in the collections of the Hungarian Natural History Museum. The study has revealed three new species, and a fourth was provided by my friend MR. H. LAST, who recognised it's originality and invited me to describe it. I am grateful to both these colleagues, as also to the staff of the British Museum, Natural History, for allowing frequent access to the collections. SYSTEMATICS Stiliderus kiloloensis (LAST) Stilicoderus kiloloensis LAST, 1984, Annls hist.-nat. Mus. natn. hung. 76: 137. 1 was unaware of the existence of this species which was described after the final draft of the manuscript of my revision, part 1. In accordance with the criteria used in my revision & key, a short supplement to the author's description and a figure of the aedeagus are given below. The third known member of the funebris group, to which it runs at the beginning of my key. It differs from both the other species, S. funebris LAST and S. nubilus LAST at first sight by the bicolorous elytra and indistinctly paler terminal segments of the abdomen. It differs furthermore by the slightly asperate micro-puncturation of the elytra (simple in the other two species). The median tooth of the labrum is equal in length but stouter than the lateral pair. The aedeagus is characteristic, but typical in structure, of the group, with a very large wish-bone shaped dorsal plate of the median lobe. Proportions of holotype: length: ca. 9.5 mm.; length of head: 128; breadth of head: 130; length of antennae: 268; length of pronotum: 132; breadth of pronotum: 125; length of elytra: 146; breadth of elytra: 150. Stiliderus aerosus (LAST) Stilicoderus aerosus LAST, 1984, Fol. ent. hung. 45 (2): 114. Stiliderus aerosus: ROUGEMON (1986) Ent. Abh. Mus. Tierk. Dresden 49 (8): 154. 2 cfcf & 1 $ : New Guinea / NE, Wau, McAdam Park IX. 1968 / no. NG-W-B 38 / leg. Dr. J.. Balogh; 1 9 : New Guinea / NE, Wau 22. IX.-30. IX. 1969 / No. NGW-R 9 : leg. Dr. J. Balogh. These exx. agree with the S. aerosus holotype which I have seen, including the long recumbent pubescence and the aedeagus, but lack the aeneous lustre of the fore-body. The new material comes from a locality far to the SE of that of the holotype material. * 22nd contribution to the knowledge of Staphylinidae.