MACNBR   00242
MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
artículos
Título:
Description of the immature stages of Sigara (Tropocorixa) santiagiensis (Hungerford, 1928) (Insecta: Heteroptera: Corixidae)
Autor/es:
KONOPKO, S. A.
Revista:
JOURNAL OF NATURAL HISTORY
Editorial:
TAYLOR & FRANCIS LTD
Referencias:
Lugar: Londres; Año: 2013 vol. 47 p. 1959 - 1959
ISSN:
0022-2933
Resumen:
The immature stages of Sigara santiagiensis are described and illustrated for the first time. The eggs of Sigara can be distinguished by the chorionic surface. The main characters separating the five nymphal instars of S. santiagiensis are: body and head lengths; body, head, and eye widths; ocular index; number of: transverse sulcations of the rostrum, setae on the inner surface of protibiotarsus, campaniform sensilla on posterior surface of protrochanter, spines on posteroventral surface of mesotibia and on tibial comb of metaleg, long, slender setae on posterodorsal surface of  mesotarsus, spines and swimming hairs on  anteroventral and posterodorsal surfaces of metatarsus; and grade of development of the wing pads. The body length, the chaetotaxy of the mesonotum, pro- and metafemora, protibiotarsus, metatibia, metatarsus, and urosternites distinguish species or group of species of instars I and V of some of the species of the genus Sigara described up to now.