Revision of Tricimba Lioy and Aprometopis Becker (Diptera : Chloropidae) from Australia and the Papuan region

Abstract

The genus Tricimba. in its broadest sense. is revised from Australia. New Guinea. and Bismarck and Solomon Islands and Vanuatu . In all, 66 species are recorded from Australia. 39 from New Guinea and the Bismarck Archipelago. five from the Solomon Islands and two from Vanuatu . A total of 96 species is included in the keys: seven described species. 87 new species of Tricimba (T . aberrans. T . acuta, T. acuticercalis, T. aliciae, T. angustigena, T. antennata, T. approximata, T. aurata, T. aureopilosa, T. auriculata, T. biannulata, T. biloba, T. biseta, T. breviradialis, T. cana, T. calcarula, T. cardamomi, T. concava, T. difficilis, T. digitata, T. distigma, T. diversa, T. edentata, T. elongata, T. excavata, T, exsinuata, T. exvittata, T. facialis, T. flaw, T. flavigena, T. flavitibia, T. flavoscutellata, T. fusciseta, T. grevei, T. hardyi, T. katepisternalis, T. lactipennata, T. laevigata, T. languida, T. lata, T. latigena, T. liepae, T. longicercalis, T. longigena, T. longiseta, T. lutea, T. maculata, T. major, T. melanochaeta, T. minuta, T. monochaeta, T. monosticha, T. muitiseta, T. nigriseta, T. nitens, T. nitidifrons, T. nitidissima, T. obscura, T. occidentalis, T. oligochaeta, T. pandanicola, T. papuensis, T. parksorum, T. pendula, T, pilioculata, T. pilosa, T. pinguiseta, T. planiscutellata, T. pleichaeta, T. priori, T. propinqua, T. pubiantennata, T. quadriseta, T. rectiantennata, T. scrobiculata, T, simplex, T. solomonensis, T. tasrnanensis, T. tenuis, T. thistletoni, T. tibialis, T. tomentosa, T. tuberoscula, T. uniseta, T. vanuatensis, T. vulgaris, T. wauensis), one new species of Aprometopis (A. australis) and one new genus and species (Pseudotricimba anomala). Tricimba steatodae Hickman, 1971 is newly synonymised with T. convexa Malloch, 1927. The species considered are grouped into three genera and 17 species-groups within Tricimba. The relationships of the species-groups with each other and with extra-limital species-groups, and the relationships of the genera are tabulated and discussed. The genera Nartshukiella, Euhippelates, Eutricimba and Crassivenula are considered to correspond to the level of species-groups of Tricimba in this revision and are synonymised with Tricimba. The relationships of the tribes Tricimbini and Incertellini are discussed.