Morphological features of Compsus auricephalus (Louisiana, Acadia Parish): (A–C) mouthparts: (A) right maxilla, ventral view (cd: cardo; st: stipes; pg: palpiger; mpm1: maxillary palpomere 1; mpm2: maxillary palpomere 2; mpm3: maxillary palpomere 3; gat: galeal teeth; ga: galea; lat: lacinial tooth; la: lacinia), (B–C) prementum, (B) dorsal view, (C) lateral view (lpm1: labial palpomere 1; lpm2: labial palpomere 2; lpm3: labial palpomere 3; lg: ligula), (D) metendosternite, posterior view (sk: stalk; fa: furcal arm; cr: crux; ds: distal sheath; at: anterior tendons; lf: longitudinal flange; hm: hemiductus), (E) hindwing (Sc: subcosta; R: radial; Rr: radial recurrent; rm: crossvein between radial system and Mr; Mr: medial recurrent; w: radial window; prs: proximal radial sclerite; rsd: distal radial sclerite; rsc: radial sclerotisation; msc: medial sclerotisation; Cu: cubital; Cu1: branch of Cu; af: apical fold; Cu2: branch of Cu; 2A: anal vein 2; 3A: anal vein 3; ac: anal cell; 4A: anal vein 4; R3: radial 3; pst: postradial stripe; ppp: posterior part of postradial stripe; h: apical hook of medial stripe; mst: medial stripe).