We introduce a new graph model. In this model, vertices are points spread in a metric space and each vertex is assigned to a box in the space. Two vertices are connected by an edge if and only if its respective boxes contain the opposite vertex. We focus our study to the simplest case in which vertices are spread in a one dimensional euclidean metric space. We give both, a combinatorial and a s...

Case-building is energetically expensive and case-repair may be a viable alternative to rebuilding for caddisflies when the case is damaged. In this study, we damaged the larval cases of 3 Trichoptera genera: Lepidostoma spp.; Neophylax rickeri Milne, 1935; and Onocosmoecus unicolor (Banks, 1897). We manually damaged the anterior, middle, or posterior portions of the larval case. We measured ca...