Manopus biguttatus Laporte: Syntype male. Photos by Kerry Katovich. .
left lateral view caudal view
Genitalia of Manopus biguttatus.
Distribution of Manopus biguttatus.

Melolonthinae Catalog

Diagnosis: this species is recognized by its 8-segmented antennae,
and trapezoidal, quadrate pronotum with posterior margin medially concave.

Description:
Measurements: Prothorax at widest point 3.3 mm, elytra at widest point 4.5 mm, length 13.3 mm.

Color and vestiture: Head and pronotum dark brown, vestiture of white setae, scutellum dark brown, densely covered with white setae, elytra golden brown, mottled, ventral surface dark brown.

Head: Clypeus coplaner with frons, with anterior angles acute; labrum not coplaner with clypeus, prelabrum visible; labium with prementum quadrate, medially grooved; antennae 8-segmented, segments 6-8 forming the club, club thin, length equal to segments 3-6 combined, antennal insertions not visible in dorsal view.

Prothorax: Pronotum trapezoidal, quadrate, widest medially, anterior angle obtuse lateral margin convex, posterior angle acute, posterior margin straight, medially concave; coxa transverse; tibia bidentate; pretarsus with claws weakly divergent, equal in length, both claws narrowly split.

Mesothorax: Scutellum broadly triangular; elytra longer than wide, widest medially, lacking striae, surface mottled brown in coloration, anterior and posterior umbones prominent.

Metathorax: Metathoracic leg with coxa widely separated; femur ovate, narrowing distally; tibia clavate, widest medially, narrowing in distal 1/4th, widening at distal margin, posteroventral distal margin with two large spurs, spurs above tarsal articulation joint, posterior distal margin with deep, broad U-shaped groove; pretarsus with claws similar to prothoracic and mesothoracic claws.

Abdomen: Ventrites 2-4 subequal in length, 5th visible ventrite (=propygidium) length equal to the length of ventrites 3-4 combined, 6th ventrite equal in length to 5th ventrite length, posterior margin with a slight membranous margin, ventrite and sternite of 5th abdominal
segment lacking a complete suture; pygidium tear-shaped, longer than wide, narrowing posteriorly, posterior margin blunt.