LARVAE OF THE COSTA-RICAN HETAERINA (ODONATA, CALOPTERYGIDAE) WITH COMMENTS ON DISTRIBUTION

The larvae of seven of the nine Costa Rican species of Hetaerina (H. c apitalis, H. cruentata, H. fuscoguttata, H. majuscula, H. miniata, H. occisa and H. titia) were identified by matching their Cellulose Aceta te Gel Electrophoresis (CAGE) patterns with those of adults. CAGE allo ws larval descriptions to be processed at a much faster rate than thro ugh traditional rearing techniques and, provided that refrigeration an d a power supply are available, is relatively portable and robust. Adu lts of H. capitalis, H. cruentata and H. miniata were also reared from final instar larvae. Larvae of H. caja and H. sempronia were identifi ed by site association with adults and unique suites of morphological characters. Characters on the head, antennae, labium, pronotum, legs, abdomen, and caudal appendages are described and illustrated, and a ke y to final instar larvae of all nine species is presented. The distrib ution of Hetaerina in Costa Rica is influenced primarily by the Cordil lera.