Abstract
The subfamily Metriorrhynchinae is the most species-rich clade of Lycidae (Coleoptera). A recent proposal suggests that the Erotinae is a sister group of the Metriorrhynchinae. Within the Metriorrhynchinae, evidence is presented for the monophyly of the Conderini and Metriorrhynchini and their sister group position. The Trichalina, Hemiconderina and Metriorrhynchina form the tribe Metriorrhynchini. The relationships between the basal lineages of this group are poorly understood. Several clades are distinguished within the Metriorrhynchina, but there is only weak evidence supporting a relationships between them. The distribution of individual clades is discussed. Carathrix Kleine, 1926 (= Pseudodontocerus Pic, 1921), Dilolycus Kleine, 1926 (= Metriorrhynchus Gemminger et Harold, 1869), Flabelloporrostoma Pic, 1923 (= Metriorrhynchus Gemminger et Harold, 1869), Rossioptera Kasantsev, 1988 (= Xylobanellus Kleine, 1930), Samanga Pic, 1921 (= Broxylus C.O. Waterhouse, 1879), Strophicus C. O. Waterhouse, 1879 (= Enylus C.O. Waterhouse, 1879), and Tapromenoeus Bocak et Bocakova, 1989 (= Prometanoeus Kleine, 1925) are proposed as junior synonyms. Pseudosynchonnus Pic, 1922 is transferred to the Erotinae (Taphini) and Pseudosynchonnus Pic, 1922, Protaphes Kleine, 1926, and Parapyropterus Kleine, 1926 are proposed to be junior subjective synonyms of Lycoprogenthes Pic, 1915. Redescriptions of Metriorrhynchinae genera and a key to genera are provided.
Highlights
The Metriorrhynchinae is the largest subfamily of Lyci dae, both in the number of genera and number of species
Most Metrior rhynchinae are from Southeast Asia, the Indonesian Archipelago, New Guinea and Northern Australia
Metrior rhynchinae appear to be close to the Erotinae as they have very similar pronotal carinae in some forms, structurally similar elytral costae, male and female genitalia similar in some features, and generally similar larvae (Bocak and Matsuda, in press)
Summary
The Metriorrhynchinae is the largest subfamily of Lyci dae, both in the number of genera and number of species. Kleine (1933) listed in the last World Catalogue about 1200 species in 41 genera classified in this subfamily. In terms species this subfamily make up over 40 percent of the Lycidae. Most Metrior rhynchinae are from Southeast Asia, the Indonesian Archipelago, New Guinea and Northern Australia. Fur ther species occur in Africa, Madagascar, temperate Asia, Ceylon, and India. Within Lycidae, Metrior rhynchinae are defined by their circular phallobase (Figs 91-132), flat, conspicuous, unpaired vaginal gland in most representatives (Figs 143-160), and a pronotum with lanceolate median areola, usually with lateral and frontolateral pronotal carinae (Figs 57-86). Metrior rhynchinae appear to be close to the Erotinae as they have very similar pronotal carinae in some forms, structurally similar elytral costae, male and female genitalia similar in some features, and generally similar larvae (Bocak and Matsuda, in press)
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