Optomerus bispeculifer Classification Family Cerambycidae > Subfamily Cerambycinae > Tribe Rhinotragini > Genus Optomerus Diagnostic Features of Larvae Mature larva. Head very strongly transverse. Genae bearing numerous rather short, bristly setae. Mouthframe smooth, ferruginous; frontal sutures indistinct. Mandible entirely pitchy. Hypostoma pale ferruginous, smooth; sutures incurved; gula with sutures slightly raised. Maxilla with segment 3 of palp almost as long as segment 2. Labial palpi with segment 2 slightly longer than segment 1. Prothorax with posterior area of pronotum dull, finely micro-granulate; lateral regions dull, velvety micro-spiculate; prosternum velvety micro-spiculate sublaterally; proeusternum with a distinct median, longitudinal, setose elevation. Abdomen with ampullae rather dull, micro-granulate. Tergite 9 without a sclerotized process. Anal lobes sparsely setose. Legs well developed, 3-segmented, slightly shorter than maxillary palp. Spiracles with peritreme rather narrowly oval, thin, pale. Length up to 18 mm; maximum breadth (at prothorax) 5 mm. Pupa. Similar to that of Sphecomorpha from which it differs as follows. Elytra subparallel-sided and rounded apically. Abdomen with tergite 9 without a subrectangular elevation. Length up to 14.5 mm; maximum breadth 4.75 mm. Adapted from Duffy (1960). Biology and Economic Importance Biology unknown for members of this tribe. Species of this tribe are potentially invasive outside their native range. Selected References to Larvae Specimens Duffy, 1960