The soft scale (Coccidae) associates of Malaysian ant-plants

1998 ◽  
Vol 14 (4) ◽  
pp. 427-443 ◽  
Author(s):  
Hans-Peter Heckroth ◽  
Brigitte Fiala ◽  
Penny J. Gullan ◽  
Azarae HJ. Idris ◽  
Ulrich Maschwitz
Keyword(s):  
Host Plant ◽  
Host Species ◽  
Peninsular Malaysia ◽  
Scale Insects ◽  
Soft Scale ◽  
Genus Level ◽  
The Family ◽  
Single Host ◽  
Taxonomic Research ◽  
Host Plant Specificity

Myrmecophytic species of the Paleotropical plant genus Macaranga (Euphorbiaceae) have hollow stems that are almost always occupied by ants of the genus Crematogaster and scale insects of the family Coccidae (Hemiptera: Coccoidea). The coccids have a cryptic endophytic lifestyle and are confined to this microhabitat. They are much more diverse than previously recognised. First data are presented on the diversity, prevalence, specificity and distribution of the coccids associated with myrmecophytic Macaranga species. Twenty-two species of Coccidae in total, including 15 previously unknown from Macaranga, were discovered from 19 species of Macaranga in Peninsular Malaysia and Borneo. The original describers tentatively assigned the known coccid species to Coccus (Coccinae) but the Macaranga coccids still require taxonomic research to establish their correct placing. The coccids varied in their host-plant specificity from species that occurred in most of the sampled Macaranga to one species that was found almost exclusively only on a single host species. In addition to their occurrence on Macaranga, only three species, C. macarangae and C. secretus and morphospecies C. 214 were found on rare occasions in the stem interior of a few other myrmecophytes and in a non-myrmecophytic liana, but did not regularly colonise these plants. Most of the coccids can be regarded as highly specific at the plant genus level.

scholarly journals Review of the flower-inhabiting water scavenger beetle genus Cycreon (Coleoptera, Hydrophilidae), with descriptions of new species and comments on its biology

2018 ◽  
Vol 65 (1) ◽  
pp. 99-115 ◽  
Author(s):  
Emmanuel Arriaga-Varela ◽  
Sin Yeng Wong ◽  
Alexander Kirejtshuk ◽  
Martin Fikácek
Keyword(s):  
New Species ◽  
Host Species ◽  
Organic Material ◽  
Peninsular Malaysia ◽  
Gut Contents ◽  
Field Observations ◽  
Median Lobe ◽  
Malay Peninsula ◽  
Internal Organs ◽  
The Family

The hydrophilid genusCycreonOrchymont, 1919, previously known from two historical specimens only, is reviewed based on the numerous material collected recently from the inflorescences of various Araceae species in the Malay Peninsula and Borneo. Four species are recognized in the genus:C.sculpturatusOrchymont, 1919 from Sumatra,C.armandiShatrovskiy, 2017 from Singapore,C.adolescenssp. n.from peninsular Malaysia, andC.floricolasp. n.with two subspecies, the nominotypical one from Peninsular Malaysia, andC.floricolaborneanussubsp. n.from Borneo. All species are very similar, differing only by the pronotal punctation, shape of the clypeus and the mentum, and the form of the median lobe of the aedeagus. Specimens ofC.floricolasp. n.andC.adolescenssp. n.were collected from inflorescences of various genera of the family Araceae. The field observations and analysis of mid gut contents indicates that they feed on organic material on internal organs of the inflorescences, including the pollen of the host plant. They were also observed to carry a large amount of pollen and are likely pollinators of their host species of Araceae.

Review of the family Coccidae (Hemiptera: Coccomorpha) in Laos

Zootaxa ◽  
2018 ◽  
Vol 4460 (1) ◽  
pp. 1 ◽  
Author(s):  
JINYEONG CHOI ◽  
PHEOPHANH SOYSOUVANH ◽  
SEUNGHWAN LEE ◽  
KI-JEONG HONG
Keyword(s):  
Economic Importance ◽  
Identification Key ◽  
Scale Insects ◽  
Soft Scale ◽  
Adult Females ◽  
The Family

The family Coccidae Fallén, 1814 (Hemiptera: Coccomorpha), known as soft scale insects, is represented in Laos by 26 species. This includes 15 new country records: Ceroplastes cirripediformis (Comstock, 1881), C. floridensis Comstock, 1881, Coccus capparidis (Green, 1904), C. celatus De Lotto, 1960, C. formicarii (Green, 1896), C. gymnospori (Green, 1908), C. latioperculatum (Green, 1922), Drepanococcus cajani (Maskell, 1891), Eucalymnatus tessellatus (Signoret, 1873), Megapulvinaria maxima (Green, 1904), Paralecanium expansum (Green, 1896), Pulvinaria floccifera (Westwood, 1870), P. psidii Maskell, 1893, Saissetia miranda (Cockerell & Parrott in Cockerell, 1899), and S. oleae (Olivier, 1791). An identification key to adult females of all the soft scale species known from Laos is provided, together with diagnoses, photographs and host information. The economic importance of each species is also discussed. 

A COMPARATIVE STUDY OF HOST RECOGNITION AND THE SENSE OF TASTE IN LEPTINOTARSA

1991 ◽  
Vol 157 (1) ◽  
pp. 439-459
Author(s):  
J. L. HALEY SPERLING ◽  
B. K. MITCHELL
Keyword(s):  
Host Plant ◽  
Plant Species ◽  
Coarse Grained ◽  
Host Recognition ◽  
Physiological Measures ◽  
Sensory Stimuli ◽  
Fine Grained ◽  
The Family ◽  
Sensory Responses ◽  
Host Plant Specificity

Three species of Leptinotarsa beetles (L. decemlineata, L. texana and L. haldemani) with different host plant specificity were studied using behavioural and sensory physiological measures in an attempt to determine whether responses from chemosensory cells in the galeal sensilla of adult beetles vary with host plant preference in an understandable manner. Saps from leaves of Solarium tuberosum, S. elaeagnifolium, S. dulcamara and Lycopersicon esculentum were used as sensory stimuli. Behavioural observations were made on newly emerged adults and approach time, exploration time and number of bites in the first minute of the first meal were recorded. Number of bites in the first minute of the first meal differed across the four plant species for the three beetle species. For L. decemlineata and L. texana, sensory responses from cells in the galeal sensilla showed differences across plant species that could be related to host preference. It is suggested that at least two general types of sensory coding may be involved in host recognition by beetles in this genus. First, a ‘coarse-grained’ code based on degree of variability of input may operate to help the insect distinguish nonsolanaceous plants from solanaceous ones. Second, a ‘fine-grained’ code may help distinguish host from non-host within the family Solanaceae or perhaps within the genus Solanum. This fine-grained code may have elements of both the labelledline and across-fibre pattern codes discussed in the literature

Family-group names in the scale insects (Hemiptera: Sternorrhyncha: Coccoidea)—a supplement

Zootaxa ◽  
2013 ◽  
Vol 3616 (4) ◽  
pp. 325-344 ◽  
Author(s):  
D. J. WILLIAMS
Keyword(s):  
Family Group ◽  
Scale Insects ◽  
The Family

Williams (1969) published a list of the family-group names in the Coccoidea (scale insects) recognised at that time. The present paper supplements this earlier list and includes all nominal genera that have had family-group names based on them, including those in the earlier paper, in case it is not readily available to some workers. Nominal genera and their family-group names are listed alphabetically in catalogue form. There are now 49 families generally recognised in the scale insects, of which 16 are only known as fossils. Furthermore, 180 nominal genera have now had family-group names based on them. As stated in the 1969 list, all categories in the family group are deemed to be of co-ordinate status in nomenclature.

scholarly journals In vitro analysis of host plant specificity in Rhizoctonia solani

1997 ◽  
Vol 46 (5) ◽  
pp. 659-669 ◽  
Author(s):  
J. KEIJER ◽  
M. G. KORSMAN ◽  
A. M. DULLEMANS ◽  
P. M. HOUTERMAN ◽  
J. DE BREE ◽  
...  
Keyword(s):  
Rhizoctonia Solani ◽  
Host Plant ◽  
Host Plant Specificity ◽  
Vitro Analysis ◽  
In Vitro Analysis

Prosopanche cocuccii (Hydnoraceae): a new species from Southern Brazil

Phytotaxa ◽  
2021 ◽  
Vol 521 (3) ◽  
pp. 177-192
Author(s):  
JORDANO D. TAVARES DE CARVALHO ◽  
CATARINE MARKUS ◽  
ALDO MEROTTO JUNIOR ◽  
RENATO A. ZÁCHIA ◽  
MARILIA SCHUCH ◽  
...  
Keyword(s):  
New Species ◽  
Nicotiana Tabacum ◽  
Host Plant ◽  
Morphological Characteristics ◽  
Southern Brazil ◽  
Habitat Ecology ◽  
Single Host ◽  
Flower Organs ◽  
General Size ◽  
A New Species

Prosopanche cocuccii is described as a new species from Southern Brazil. It resembles P. bonacinae due to the trigonous rhizome and by the general size of the flower organs. Nevertheless, P. cocuccii is distinguished by the main floral morphological characteristics used to differentiate species. In addition, the new species presents some rare characters for the genus, such as a highly branched rhizome and flowers usually grouped in fascicles. We provide a description, illustrations, field photographs, morphological details under the stereomicroscope, and comments on habitat, ecology, distribution, and conservation of the new species, as well as an updated key for the genus Prosopanche. In addition, we identified that P. cocuccii produces a large number of rhizomes and fruits for each single host specimen of tobacco (Nicotiana tabacum), which resulted in a decrease in height and growth of its only known host plant.

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