Identity, morphology and natural history of lema species (Coleoptera: Chrysomelidae: Criocerinae) infesting orchids (Asparagales: Orchidaceae) in India. (Record no. 289368)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02901nam a22001937a 4500 |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 632.6 |
| Item number | AKS/ID PG |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Akshaja Suresh |
| 245 ## - TITLE STATEMENT | |
| Title | Identity, morphology and natural history of lema species (Coleoptera: Chrysomelidae: Criocerinae) infesting orchids (Asparagales: Orchidaceae) in India. |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Vellayani |
| Name of publisher, distributor, etc | Department of Agricultural Entomology, College of Agriculture |
| Date of publication, distribution, etc | 2021 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 56p. |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | M Sc |
| 520 ## - SUMMARY, ETC. | |
| Abstract | The present study entitled “Identity, morphology and natural history of Lema species<br/>(Coleoptera: Chrysomelidae: Criocerinae) infesting orchids (Asparagales: <br/>Orchidaceae) in India” was conducted at the College of Agriculture, Vellayani from <br/>2019-2021 to ascertain identity of the Lema species (Coleoptera: Chrysomelidae: <br/>Criocerinae) infesting orchids in India and describe them; and study the immature <br/>stages as well as lifecycle of Lema sp. infesting orchids in south India. <br/>The orchids in north-east India are attacked by Lema pectoralis unicolor<br/>Clark, distributed in China and the Indo-Malayan subregion. The Lema beetles <br/>attacking orchids in south India (Kumari and Lyla, 2001) and the Andaman and <br/>Nicobar Islands (Baskaran et al., 2016; Bharathimeena, 2016) belongs to a new <br/>species, here named as L. vimala n. sp. This is the first report of L. pectoralis unicolor<br/>in India. The beetles infesting south Indian orchids were collected from different <br/>orchid farms in Thiruvanathapuram. It was reared under laboratory conditions and the <br/>life cycle was studied in detail. The external morphology of Lema pectoralis unicolor<br/>and Lema vimala n. sp. was studied, illustrated and descriptions were prepared. The <br/>male and female genitalia of both the species were dissected, studied and <br/>photographed. Endophallus of L. vimala n. sp. was fully everted and the endophallic <br/>sclerites were studied and illustrated. Illustrations and descriptions of egg, and final <br/>instar larvae as well as pupa were prepared. The duration of life cycle ranged from 19 <br/>to 24 days, with egg period of 2 to 5 days, larval period of 5 to 9 days and pupal <br/>period of 10 to 14 days. The adults lived for 68 to 170 days. Other biological <br/>observations such as feeding and breeding behavior were also recorded. Eggs were <br/>found only on flowers and the grubs fed only on flowers while the adults fed on <br/>flowers, epiphytic roots and leaves. The grubs carry fecal shield on their back. Egg <br/>cannibalism by first instar grubs was recorded. Adults perform thanatosis. Pediobius<br/>sp. on eggs, Tetrastichus sp. nr julis on larva, and an unidentified Ichneumonidae on <br/>pupa were the parasitoids recorded on L. vimala n. sp. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Agricultural Entomology |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Lema species |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Orchids |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Prathapan, K D (Guide) |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://krishikosh.egranth.ac.in/handle/1/5810215797 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Item type | Theses |
| Not for loan | Collection code | Home library | Current library | Shelving location | Date acquired | Full call number | Barcode | Date last seen | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Reference Book | KAU Central Library, Thrissur | KAU Central Library, Thrissur | Theses | 25/04/2022 | 632.6 AKS/ID PG | 175308 | 25/04/2022 | Theses |