Papers by Basant Agarwala
<p>Previously known as Aristobia testidua, this species is now correctly identified as <... more <p>Previously known as Aristobia testidua, this species is now correctly identified as <em>Aristobia reticulator</em> (Fabricius 1781) and adults also feed on the bark of a wild shrub, Microcos paniculata, found commonly in the wasteland and forests of Tripura and elsewhere in northeast India. The distribution range of this species is Southeast Asia.</p
Figs. 9–10. Eutaenia corbetti, abdomen. 9) Posterior part, lateral view: a) Male, b) Female; 10) ... more Figs. 9–10. Eutaenia corbetti, abdomen. 9) Posterior part, lateral view: a) Male, b) Female; 10) Terminal segments: a) Male, b) Female.
Fig. 6. Aristobia reticulator, thorax, ventral view showing coxal cavities, episterna, and epimera.
Figs. 7–8. Eutaenia corbetti. 7) Dorsal habitus: a) Male, b) Female; 8) Ventral habitus: a) Male,... more Figs. 7–8. Eutaenia corbetti. 7) Dorsal habitus: a) Male, b) Female; 8) Ventral habitus: a) Male, b) Female.
Fig. 1. Map showing distribution range of Aristobia reticulator in the Asian-Pacific region and k... more Fig. 1. Map showing distribution range of Aristobia reticulator in the Asian-Pacific region and known localities in the states of northeastern India.
Figs. 4–5. Imantocera penicillata, antenna. 4) Fourth segment; 5) Terminal segments (8-11): a) Ma... more Figs. 4–5. Imantocera penicillata, antenna. 4) Fourth segment; 5) Terminal segments (8-11): a) Male, b) Female.
Fig. 6. Imantocera penicillata, protarsal segments. a) Male, b) Female.
Figs. 1–2. Imantocera penicillata. 1) Dorsal habitus: a) Male, b) Female; 2) Ventral habitus: a) ... more Figs. 1–2. Imantocera penicillata. 1) Dorsal habitus: a) Male, b) Female; 2) Ventral habitus: a) Male, b) Female.
Fig. 8. Aristobia reticulator, abdominal sternites, male and female.
Fig. 3. Aristobia reticulator, head, anterior view.
Fig. 2. Aristobia reticulator, habitus. a) Male, b) Female.
Fig. 7. Aristobia reticulator, protarsal segments. a) Dorsal view, b) Ventral view, c) Lateral view.
Fig. 3. Imantocera penicillata, head, frontal view. a) Male, b) Female.
Current Science, Dec 25, 2017
Source parameters of earthquakes and intraplate deformation beneath the Shillong plateau and nort... more Source parameters of earthquakes and intraplate deformation beneath the Shillong plateau and northern Indo-Burman ranges.
Check List, 2012
Quantification of butterfly diversity and species richness is of prime importance for evaluating ... more Quantification of butterfly diversity and species richness is of prime importance for evaluating the status of protected areas. Permanent line transect counts were used to record species richness and abundance of butterfly communities of different habitat types in Trishna wildlife sanctuary. A total of 1005 individuals representing 59 species in 48 genera belonging to five families were recorded in the present study. Of these, 23 species belonged to the family Nymphalidae and accounted for 38.98% of the total species and 45.20% of the total number of individuals. Mature secondary mixed moist deciduous forest showed the maximum diversity and species richness, while exotic grassland showed minimum diversity and species richness. Out of 59 species, 31 are new records for Tripura state, while 21 are unique species and nine are listed in the threatened category. This study revealed that mature secondary forests are more important for butterfly communities, while exotic grasslands have a ...
Journal of Insect Science, 2010
Aphids and other phytophagous insects often show intra-specific variations in relation to host pl... more Aphids and other phytophagous insects often show intra-specific variations in relation to host plant utilization. In several instances, intra-species variations lead to host-plant specialization. These are considered to be important source of speciation. In a recent study (Foottit RG et al. 2010. Zootaxa 2358: 25-38) two forms of the banana aphid, Pentalonia nigronervosa f. typica Coquerel (Hemiptera: Aphididae) from banana hosts and P. nigronervosa f. caladii van der Goot collected from Zingiberaceae and Araceae respectively were described as separate species, P. nigronervosa Coquerel and P. caladii van der Goot, based on morphological and molecular differences. A study was undertaken to examine the ecological and biological characters in asexual wingless morphs of the two forms of P. nigronervosa sensu lat. using taro (Araceae) and banana (Musaceae) as host plants. The results showed consistent differences between the two forms. In biological characters, the apterous morphs of f. caladii from taro host plants were found to be significantly more fecund, showed a higher net reproductive rate, longer reproductive duration, and their adults lived longer than the f. typica aphids from banana host plants. In ecological characters, f. caladii aphids formed bigger colonies and in significantly less time on taro plants in comparison to f. typica aphids which formed smaller colonies in significantly more time on banana plants. Reciprocal transfer of the two forms of P. nigronervosa aphids between their host plant species lowered performance on the transferred host plants. These results confirmed that P. nigronervosa f. typica from banana hosts and P. nigronervosa f. caladii from taro hosts are indeed two different species in relation to host plant utilization and suggested that the observed differences in their fitness characters represented distinct genotypes.
Journal of Insect Science, 2013
BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access t... more BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.
Abstract. Cannibalism of eggs by larvae of Adalia bipunctata, an aphidophagous species of ladybir... more Abstract. Cannibalism of eggs by larvae of Adalia bipunctata, an aphidophagous species of ladybirds, is important for survival when aphids are scarce. Ladybirds survive longer by eating eggs of their own species rather than aphids. Since it costs less, in terms of larval growth, to eat eggs rather than aphids, cannibalism has a strong advantage under conditions of prey scarcity.
Several wildlife sanctuaries in the world are home to the surviving populations of many endemic s... more Several wildlife sanctuaries in the world are home to the surviving populations of many endemic species. Trishna wildlife sanctuary in northeast India is protected by law, and is home to the last surviving populations of Asian bison (Bos gorus Smith), spectacle monkey (Trachypithecus phayrie Blyth), capped langur (Trachypithecus pileatus Blyth), slow loris (Nycticebus coucang Boddaert), wild cat (Felis chaus Schreber), and wild boars (Sus scrofa L.), among many other animals and plants. The sanctuary was explored for species richness and diversity of butterflies. A six-month-long study revealed the occurrence of 59 butterfly species that included 21 unique species and 9 species listed in the threatened category. The mixed moist deciduous mature forest of the sanctuary harbored greater species richness and species diversity (39 species under 31 gen-era) than other parts of the sanctuary, which is comprised of regenerated secondary mixed deciduous forest (37 species under 32 genera), ...
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Papers by Basant Agarwala