The segmentation gene network in insects can produce equivalent phenotypic outputs despite differences in upstream regulatory inputs between species. We investigate the mechanistic basis of this phenomenon through a systems-level analysis of the gap gene network in the scuttle fly Megaselia abdita (Phoridae). It combines quantification of gene expression at high spatio-temporal resolution with ...

Hitherto six species of scuttle fly of the cosmopolitan genus Phalacrotophora Enderlein were known from Europe, of which only two were recorded from Britain and the Netherlands (Disney, 1991). The larvae of these two species, P. berolinensis Schmitz and P. fasciata (Fallén), are parasitoids of the pupae of Coccinellidae (ladybird beetles) (Disney, Majerus & Walpole, 1994). The larval habits oft...

The scuttle fly, Megaselia scalaris, is often cited as a model in which to study early sex chromosome evolution because of its homomorphic sex chromosomes, low but measurable molecular differentiation between sex chromosomes, and occasional transposition of the male-determining element to different chromosomes in laboratory cultures. Counterintuitively, natural isolates consistently show sex li...

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We present SuperFly (http://superfly.crg.eu), a relational database for quantified spatio-temporal expression data of segmentation genes during early development in different species of dipteran insects (flies, midges and mosquitoes). SuperFly has a special focus on emerging non-drosophilid model systems. The database currently includes data of high spatio-temporal resolution for three species:...