Paragus (Pandasyopthalmus) longiventris Loew  

Paragini, with the single genus Paragus, is a compact and distinctive group occurring in all continents other than South America and Antarctica. Paragus species are small, slender to moderately robust, with thorax black or with apex of scutellum pale, and abdomen usually extensively red-orange to entirely black. Paragus has postpronotum bare, antenna short, anterior anepisternum bare, abdomen parallel-side, face yellow in background colour, metaepisternum bare, scutum black laterally, at most with a poorly defined yellow polinose vitta, and metasternum bare.

The subgenus Pandasyopthalmus sensu Vujic et al. (2008) has eye uniformly pilose; scutum shining, finely punctured, without pollinose submedial vittae; scutellum with rounded posterior margin, without conspicuous teeth or bristles; abdomen elongate, usually narrowed between terga 2 and 3; terga 1–2 fused; terga 3–5 usually not fused, connection between terga 2 and 3 movable; connections between terga 3–5 immovable; male genitalia: minis small, lateral arms of minis long; aedeagus ‘amphora-like’.

Pandasyopthalmus is divided in two species groups: jozanus and tibialis groups. P. longiventris belongs to the tibialis group, whose species have face with distinct facial tubercle and with dark facial stripe in females; basoflagellomere about three times as long as pedicel; spurious vein extending beyond or to the meeting point of vein M1 with vein DM; male genitalia: ejaculatory apodeme narrow and distally with large umbrella-like fringe; lateral lobe of aedeagus reduced; postgonite much more protruded anteriorly than aedeagus; aedeagal apodeme with well-developed lateral arms; aedeagus with small, arm-like lateral projections; hypandrium usually with characteristic lateral projections.