Neotropical Entomology

, Volume 42, Issue 3, pp 288–292

Description of the Immatures of Scaptocoris carvalhoi Becker (Hemiptera: Cydnidae)

Systematics, Morphology and Physiology

DOI: 10.1007/s13744-013-0122-8

Cite this article as:
Vivan, L.M., Nardi, C., Grazia, J. et al. Neotrop Entomol (2013) 42: 288. doi:10.1007/s13744-013-0122-8

Abstract

Nymphs and adults of the burrower bug Scaptocoris carvalhoi Becker feed on vegetal sap of their host plants through the roots, and little is known on the morphology and biology of its immature stage. Therefore, we aimed to characterize the immatures of S. carvalhoi by describing the egg and the morphology of each instar. Eggs of S. carvalhoi have a smooth chorion surface without visible micropylar processes. The presence of five instars was confirmed by the coefficient of determination (R2 > 0.95) and by the growth constant (K between 1.2 and 1.6). Nymphs have an elliptical body and fossorial scythe-like forelegs. The tarsi are absent as in adults, and the prototarsal insertion region becomes visible only in the fourth instar. Nymphs from first to fourth instar of S. carvalhoi showed the presence of 1 + 1 trichobothria in urosternites III to VII, close to the anterior margin and inside the spiracles; besides these trichobothria, fifth instars presented 1 + 1 pre-trichobothria in urosternites III to V located posteriorly, almost in the row of spiracles close to the posterior margin of the urosternites. This is the first detailed morphological record of immatures belonging to Scaptocoris.

Keywords

Burrower bugs descriptive morphology nymphs  morphology soil pests 

Copyright information

© Sociedade Entomológica do Brasil 2013

Authors and Affiliations

  1. 1.Fundação MTRondonópolisBrasil
  2. 2.Univ Estadual do Centro-OesteGuarapuavaBrasil
  3. 3.Univ Federal do Rio Grande do SulPorto AlegreBrasil
  4. 4.Univ de São Paulo, ESALQ/USPPiracicabaBrasil

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