Morphological study of the thorax of the five nymphal instars of Triatoma arthurneivai Lent & Martins (Hemiptera, Reduviidae, Triatominae)

Revista Brasileira de Entomologia

João Aristeu Da Rosa²  Marcello Pereira Medeiros²  Mario Cilense¹  José Maria Soares Barata¹ 

[1] ,UNESP Faculdade de Ciências Farmacêuticas Araraquara SP ,Brazil

关键词: Distinction;    gland;    instar;    nymph;    Triatoma arthurneivai;    Distinção;    estádios;    glândula;    ninfas;    Triatoma arthurneivai;   

DOI  :  10.1590/S0085-56262005000300001

来源: SciELO

【 摘 要 】

Scanning electron microscope (SEM) was done in order to study dorsal, ventral and lateral sides of 1st, 2nd, 3rd, 4th and 5th nymphal instars of Triatoma arthurneivai. The five nymphal instar can be recognized based on different pronotum, mesonotum and metanotum shapes and characteristics. In the 1st instar collar, hairless areas and tubercles are absent. The 2 nd instar presents collar, hairless areas and tubercles. In the 3rd instar occurs the development of wing pads. In the 4 th instar the four wing pads are expanded, but do not reach the abdomen and in the 5th instar the anterior wing pads almost overlap the posterior ones. At the ventral side, two metasternal glands openings (1+1) were found in all five nymphal instars. Brindley's gland evaporation areas (1+1) are located at the mesopleuron, as well as an evaporation area is located at the propleuron in all nymphal instars (1+1).

【 授权许可】

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