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Contribution a l'Étude Morphologique et Biologique des Stictococcinae [Hom. Coccoidea]

Contribution a l'Étude Morphologique et Biologique des Stictococcinae [Hom. Coccoidea] SUMMARY C. Richard: Contribution to the morphological and biological study of Stictococcinae [Hom. Coccoidea]. The discrimination of the species of scale-insects belonging to the subfamily Stictococcinae can only be done by studying the female larvae of the first instar. The general features of these larvae are given before their systematic particularities, and a key of the known species. Some morphological differences reveal that the genus Stictococcus must now be divided in two subgenera: the nominal one, subg. Stictococcus s. str. and Parastictococcus subg. n. After establishing the new synonymies it appears that the nominal subg. includes: S. formicarius Newst., S. intermedius Newst. (= S. guineensis G.-Menor, syn. nov.), S. sjostedti Ckll., S. vayssierei n. sp.; while subg. Parastictococcus includes: P. acaciae De Lotto, P. anonae Gr. & Lg., P. brachystegiae Hall, P. gowdeyi Newst., P. hargreavesi Vayss., P. multispinosus Newst. (= S. dimorphus Newst., syn. nov.; = S. diversiseta Silv., syn. nov.; = S. aliberti Vayss., syn. nov.; = S. olivaceus Vayss., syn. nov.); amounting to ten species including one new sp. A description of the general features of the males leads to class them into the coccoid type, in spite of the particularities which set them rather clearly apart from the Lecaniinae and other Coccidae. The second part of this work describes the post-embryonic development of male and female and gives the list of the known host-plants, the principal ones belonging to Euphorbiaceae, Rubiaceae, Papilionaceae, Sterculiaceae (chiefly Theobroma cacao and Cola), so far as presently known. A study of the biogeographic distribution reveals that most of the Stictococcinae, proper to intertropical Africa, live in the damp forestal zones and the Cacao and Cola districts, where the mean temperature is 27 °C. It is noted that the species are more abundant North of the Equator (where their limit of repartition follows rather closely the 12 th parallel), while they are much less numerous, but more widely distributed, South of the Equator (the most Southern species reaches approximately the 20 th parallel). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annales de la Société entomologique de France (N S ) Taylor & Francis

Contribution a l'Étude Morphologique et Biologique des Stictococcinae [Hom. Coccoidea]

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Publisher
Taylor & Francis
Copyright
© 1971 Société entomologique de France
ISSN
2168-6351
eISSN
0037-9271
DOI
10.1080/21686351.1971.12277961
Publisher site
See Article on Publisher Site

Abstract

SUMMARY C. Richard: Contribution to the morphological and biological study of Stictococcinae [Hom. Coccoidea]. The discrimination of the species of scale-insects belonging to the subfamily Stictococcinae can only be done by studying the female larvae of the first instar. The general features of these larvae are given before their systematic particularities, and a key of the known species. Some morphological differences reveal that the genus Stictococcus must now be divided in two subgenera: the nominal one, subg. Stictococcus s. str. and Parastictococcus subg. n. After establishing the new synonymies it appears that the nominal subg. includes: S. formicarius Newst., S. intermedius Newst. (= S. guineensis G.-Menor, syn. nov.), S. sjostedti Ckll., S. vayssierei n. sp.; while subg. Parastictococcus includes: P. acaciae De Lotto, P. anonae Gr. & Lg., P. brachystegiae Hall, P. gowdeyi Newst., P. hargreavesi Vayss., P. multispinosus Newst. (= S. dimorphus Newst., syn. nov.; = S. diversiseta Silv., syn. nov.; = S. aliberti Vayss., syn. nov.; = S. olivaceus Vayss., syn. nov.); amounting to ten species including one new sp. A description of the general features of the males leads to class them into the coccoid type, in spite of the particularities which set them rather clearly apart from the Lecaniinae and other Coccidae. The second part of this work describes the post-embryonic development of male and female and gives the list of the known host-plants, the principal ones belonging to Euphorbiaceae, Rubiaceae, Papilionaceae, Sterculiaceae (chiefly Theobroma cacao and Cola), so far as presently known. A study of the biogeographic distribution reveals that most of the Stictococcinae, proper to intertropical Africa, live in the damp forestal zones and the Cacao and Cola districts, where the mean temperature is 27 °C. It is noted that the species are more abundant North of the Equator (where their limit of repartition follows rather closely the 12 th parallel), while they are much less numerous, but more widely distributed, South of the Equator (the most Southern species reaches approximately the 20 th parallel).

Journal

Annales de la Société entomologique de France (N S ) – Taylor & Francis

Published: Jul 31, 1971

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