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1 March 2013 Artocarpus hirsutus (Rosales: Moraceae): A New Larval Food Plant of Aeolesthes holosericea (Coleoptera: Cerambycidae)
G. P. Bhawane, A. B. Mamlayya
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Cerambycidae is one of the richest families in beetles, which includes 35,000 catalogued species distributed throughout the world (Grimaldi & Engel 2005). The number of cerambycid species reported from India is 1,500 (Beeson 1941; Breuning 1960–62, 1963a, 1963b, 1964, 1965, 1966). Aeolesthes is one of the large genera of the Cerambycidae with 31 species from different parts of the world. There are 6 Aeolesthes species in the Indian subcontinent, but these species are well distributed in the oriental region. These 6 species are: Aeolesthes holosericea Fab., Aeolesthes basicornis Gahan, Aeolesthes sinensis Gahan, Aeolesthes induta Newman, Aeolesthes indicola Bates and Aeolesthes sarta Solsky. Mature reproductive forms range from 20 to 44 mm in length and 6 to 13 mm in width and they are usually dark brown and reddish brown (Gahan 1906). Among these 6 species of longhorn beetle, A. holosricea, A. sarta, A. indicola and A. induta have attained pest status in the natural and artificial stands. The host plants in the Indian subcontinent area as follows: A. indicola feeds and reproduces on Salix spp. (Malpighiales: Salicaceae), and A. induta breeds in the wood of satinwood, Chloroxylon swietenia DC (Sapindales: Rutaceae), and the bridal couch plant, Hymenodictyon excelsum (Roxb.) Wall. (Gentianales: Rubiaceae) (Beeson, 1941).

Aeolesthes holosericea and A. sarta are the most injurious species in the Indian forests. Aeolesthes sarta is known to feed on the 15 different plant species. Aeolesthes holosericea feeds on 45 different plant species in the forest area of India. These host plants are presented in Table 1 (Beeson 1941, Mamlayya et al. 2009).

Detailed information is available on the biological requirements of the A. holosericea along with its host range and distribution within Indian subcontinent (Gahan 1906; Stebbing 1914; Khan & Khan 1942). The grubs of A. holosericea are known to damage healthy green trees, sickly standing trees and even freshly felled trees (Stebbing 1914). Beeson (1941) reported that A. holosericea has an annual life cycle under favorable conditions but in an unfavorable environment some may survive and complete 1 generation in 2 yr. Khan & Khan (1942) studied the bionomics of A. holosericea and reported that it requires 2 yr and 7½ months to 3 yr to complete a single generation.

Khan & Khan (1942) found that the egg of A. holosericea was about 2 -25 mm long and 1–0 mm wide; being broad, elliptical, and tapering towards either edge. Full-grown larvae measured 75 mm in length and 13.5 mm. in breadth, and they were yellow in color. The pupae were yellow in color and measured 42 mm long and 35 mm wide. The adult female measured 32 mm in length and 10 mm in breadth. The size male was slightly smaller than the female (Khan & Khan, 1942).

Aeolesthes holosericea occurs in greater part of India according to availability of host plants. Regupathy et al. (1995) reported it on Acacia chundra (Rottler) Willd. (Fabales: Faaceae). Makihara et al. (2008) reported that A. holosericea is distributed throughout Sri Lanka, India, Pakistan, South China, Hainan, Thailand, Malaysia, Indonesia and Laos, and recorded it on 46 different plant species. Prakash et al. (2010) studied its population dynamics in arjun (Terminalia arjuna (Roxb.) Wight & Arn.; Myrtales: Combretaceae) ecosystem of Andhra Pradesh. They added that this species shows peak abundance in the month of Dec.

The present study reports the first record of the grubs of A. holosericea occurring in the branches of the wild jackfruit, Artocarpus hirsutus Lam. (Rosales: Moraceae). In Aug 2011, on the Shivaji University campus, Kolhapur District (MS) India, 4 grubs and 1 pupal case of A. holosericea were found under bark of A. hirsutus. These larvae were obtained from single tree of A. hirsutus. The sample was collected from a single branch of 3 m (10 feet) length and 30 cm diam. These developing stages were brought to the laboratory with the pieces of the same branch and kept for rearing under laboratory conditions at 28 °C to 30 °C with varying RH. After an interval of 9 months, adults were obtained from the pupal cases. Mating was also observed under laboratory conditions, which lasted for 1.5 h. The mated female laid eggs on the surface of a branch piece of A. hirsutus (60 cm (2 feet) long and 30 cm in diam) in the laboratory. The eggs (Fig. 1), the full grown larva (Fig. 2), the adult (Fig. 3) and larval damage to the trunk (Fig. 4), are shown in the plate I. In the laboratory the adults were quantified and their morphological peculiarities were observed under stereomicroscope. The identification of the species was made with the help of available literature (Gahan 1906).

The Shivaji University Campus is spread over 341 ha (853 ac) and located at N 16°40′39. 98″ E 74°15′06.77″ The floral diversity of the campus includes herbs, shrubs, plants of social forestry importance, timber plants, medicinally important plants and forest trees. The soil is red brown and the area receives annual rainfall about 1900 mm. The campus has only 1 Artocarpus hirsutus tree on the grounds of the Department of Botany.

TABLE 1.

EARLIER REPORTED HOST PLANTS OF AEOLESTHES HOLOSERICEA FAB. FROM FORESTS OF INDIA.

t01_274.gif

According to the earlier reports on the host plants of A. holosericea, the floral community of Shivaji University Campus includes 10 host plant species of A. holosericea. They are Acacia Arabica (Lam.) (Fabales: Fabaceae), Butea frondosa Roxb. (Fabales: Fabaceae), Eucalyptus robusta Sm. (Myrtales: Myrtaceae), Ficus bengalensis L. (Rosales: Moraceae), Mangifera indica L. (Sapindales: Anacardiaceae), Morus alba L. (Rosales: Moraceae), Tectona grandis L. (Lamiales: Lamiaceae), Terminalia belerica (Gaertn.) Roxb. (Myrtales: Combretaceae), Terminalia arjuna (Roxb.) Wight & Arn., and Terminalia tomentosa Wight & Arn. Mamlayya et al. (2009) reported the occurrence of A. holosericea in the Shivaji University Campus on Albizzia lebbeck (L.) Benth. (Fabales: Fabaceae) and Samanea saman (Jacq.) (Fabales: Fabaceae). During the present observations, the immature stages of A. holosericea were recorded in the branches of A. hirsutus. The species was confirmed from the laboratory obtained specimens.

Plate 1.

Some life stages of the cerambycid, Aeolesthes holosericea, and damage caused by its grubs to the trunk of Artocarpus hirsutus. Fig. 1, eggs; Fig. 2, last instar larva, Fig. 3, adult; and Fig. 4, damage caused by the grubs to the truck of Artocarpus hirsutus.

p01_274.jpg

SUMMARY

This work contributes the knowledge regarding diet breadth of the cerambycid wood borer, Aeolesthe holosericea Fab., and which was found to develop and reproduce on Artocarpus hirsutus. Prior to this study, A. holosericea was reported on 47 different plant species. The earlier studies on the biology, occurrence and distribution did not report Artocarpus hirsutus as a larval food plant, but this study clearly showed that Artocarpus hirsutus is a new larval food plant of A. holosericea.

Key Words: life cycle, damage, jackfruit, host, distribution

ACKNOWLEDGMENTS

The authors are thankful to CSIR, New Delhi for financial support under the Research Scheme no. 37(1449)/10/EMR - II.

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G. P. Bhawane and A. B. Mamlayya "Artocarpus hirsutus (Rosales: Moraceae): A New Larval Food Plant of Aeolesthes holosericea (Coleoptera: Cerambycidae)," Florida Entomologist 96(1), 274-277, (1 March 2013). https://doi.org/10.1653/024.096.0145
Published: 1 March 2013
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