Phthia

Body surface rather dull, sometimes with metallic iridescence restricted to ventral surface of head, calli, thorax, coxae, abdominal segments III–VI and lateral margins of abdominal sterna III–VII. Head usually longer than wide; antennal segment I thicker than following segments, cylindrical, weakly curved outward, distally thickened above upper half, longer than head; segments II and III slender, cylindrical; segment IV fusiform, longest; segment I usually shortest, segment II longer than III. Rostrum reaching posterior margin of abdominal sternite III or middle third of sternite IV. Anterior lobe of pronotal disk with narrow, arcuate, yellow transverse fascia; humeral angles acute to subacute, slightly raised and extending laterally; anterolateral borders of pronotum smooth; posterolateral borders barely sinuate, outer third dentate, inner third smooth. Scutellum variable in length, wider than long or longer than wide. Corium behind claval commissure with yellow transverse fascia. Fore and middle femora ventrally armed with two subapical spines and one row of obtuse denticles, dorsally smooth; hind femora gradually incrassate (less so in female), ventrally armed with two subapical spines and two rows of large and stout spines, dorsally smooth; male hind tibiae slender and armed. Abdominal sterna III–VI lateral to midline with yellowish to orange-red rectangular to quadrate maculae. Male genital capsule with posteroventral edge gently concave, bearing two broad spines on either side of midline, lateral angles quadrate.

Literature