A molecular phylogeny and revised classification for the oldest ditrysian moth lineages (Lepidoptera: Tineoidea), with implications for ancestral feeding habits of the mega‐diverse Ditrysia

Abstract

Abstract. The Tineoidea are the earliest-originating extant superfamily of the enormous clade Ditrysia, whose 152 000+ species make up 98% of the insect order Lepidoptera. Though more diverse than all non-ditrysian superfamilies put together (3719 vs 2604 species), the tineoids are not especially species-rich among ditrysian superfamilies. Their phylogenetic position, however, makes tineoids potentially important for understanding the causes of ditrysian hyperdiversity, through their effect on inferences about the traits of ancestral ditrysians. To reconstruct early ditrysian evolution, we need a firmly established ground plan for tineoids themselves, which in turn requires a robust knowledge of their biodiversity and phylogeny. Tineoid systematics is under-studied. The description of the world fauna remains very patchy, especially in the largest family, Tineidae, and phylogenetic studies within and among families have been few. Recently, molecular analyses have shown strong promise for advancing tineoid systematics. Here we present the largest tineoid molecular study to date, sampling five to 19 nuclear gene regions (6.6-14.7 kb) in 62 species, representing all tineoid groups ever assigned family rank, 25 of the 31 subfamilies recognized in recent classifications, and 40 genera spanning the morphological diversity of Tineidae, for which monophyly has not been established. Phylogenetic analysis used maximum likelihood, with synonymous substitutions alternatively included and excluded. The main findings confirm and extend those of other recent studies, as follows: (i) monophyly is strongly supported for Psychidae subsuming Arrhenophanidae, for Eriocottidae, and for Tineidae subsuming Acrolophidae but excluding Dryadaulinae and two genera previously assigned to Meessiinae; (ii) two new families are described, Dryadaulidae stat. rev. and Meessiidae stat. rev., based on subfamilies previously included in Tineidae but strongly excluded from this and all other families by our molecular results; (iii) Doleromorpha, formerly placed in Meessiinae sensu lato, is likewise here excluded from Tineidae, but left incertae sedis pending better characterization of what is potentially another new family; (iv) basal division of Tineidae sensu novo into 'tineine' and 'acrolophine' lineages is moderately to strongly supported, but most subfamily relationships within these lineages are very weakly supported, and polyphyly is confirmed for Meessiinae and Myrmecozelinae as previously defined; (v) basal division of Psychidae sensu novo into 'arrhenophanine' and 'psychine' lineages is moderately to strongly supported, as are most subfamily relationships within these lineages; (vi) Tineoidea are paraphyletic with respect to all other Ditrysia when synonymous substitutions are eliminated, with branching order (Meessiidae stat. rev. (Psychidae sensu novo ((Eriocottidae (Dryadaulidae stat. rev. + Doleromorpha)) (Tineidae sensu novo + all other Ditrysia)))). Support for tineoid non-monophyly varies, among the relevant nodes and among analyses...

A molecular phylogeny for the oldest (nonditrysian) lineages of extant Lepidoptera, with implications for classification, comparative morphology and life‐history evolution

“…In some Palaephatidae, finally, early instars have been reported to fold and tie the leaf edge, or tie two overlapping leaves together and feed within the resulting gallery. In this way, the palaephatids presage the later radiation of Ditrysia, many or perhaps most families of which show analogous forms of concealed external feeding, although the earliest‐diverging ditrysians, Tineoidea, seem to have returned to fungal and/or detritus feeding (Regier et al , ).…”

Revision of the genus Philonome Chambers and its proposed reassignment to the family Tineidae (Lepidoptera, Tineoidea)

“…1). In their resulting tree, Philonome was nested strongly within a monophyletic Tineidae sensu Regier et al (2015). Several interrelationships of the genera included in the clade were unresolved from the study, but Philonome was further nested within a subclade of Tineidae (Fig.…”

Power, resolution and bias: recent advances in insect phylogeny driven by the genomic revolution

“…This empirical example shows that compositional heterogeneity may not have much effect on phylogenetic results, but there is no doubt that this is dataset dependent. Phylogenetic studies on arthropods [9,40,41] and Lepidoptera [42,43] provide clear examples of compositional heterogeneity influencing phylogenetic estimates, which can result in artificial groupings with 100% bootstrap support (e.g., Regier et al Fig. 3 [43]).…”