<?php
categorias = apply_filters('taxonomy-images-get-terms', '', array( 'taxonomy' => 'category') );
foreach($categorias as $key => $categoria):
    if($key < 6):
    ?>
    <div class="box">
        <a href="<?php echo get_category_link($categoria->term_id);?>">
            <figure>
                <?php echo wp_get_attachment_image($categoria->image_id,''); ?>
            </figure>
            <img src="<?php bloginfo('template_directory');?>/images/icones/plus.png" class="plus-icone" alt="">
            <figcaption class="titulo-foto-categoria"><?php echo $categoria->name;?></figcaption>
        </a>
    </div>
    <?php
    endif;
endforeach;?>