Biosystematic studies on the family chalcididae (Hymenoptera: Chalcidoidea).
By: Jaseel R.
Contributor(s): Shanas S (Guide).
Material type:
BookPublisher: Vellayani Department of Agricultural Entomology, College of Agriculture 2023Description: 58p.Subject(s): Chalcid | Morphometric analysis | Neohaltichella nilgirica | Eniacomorpha | Antrocephalus decipiensDDC classification: 632.6 Dissertation note: MSC Abstract: The study entitled “Biosystematics studies on the family Chalcididae (Hymenoptera: Chalcidoidea)” was conducted during 2019-22 at the Department of Entomology, College of Agriculture, Vellayani with the objective of identification, morphological characterization and documentation of family Chalcididae. The base material for the study was field-collected specimens. Purposive sampling was carried out in 11 locations spread across 6 districts of Kerala. The specimens were collected by random sweep net method.
The collections were carried out in the morning and afternoon hours (9AM to 3PM) when the insect activity was at its highest. The net sweep contents were immediately transferred to absolute alcohol and the locations and collecting dates were noted. Under a high-power stereo microscope, the specimens that were obtained from the field were sorted and stored in labeled vials with absolute alcohol. The chalcid specimens were card-mounted for morphometric analysis and characterization.
The chalcid specimens were keyed out based on regional taxonomic keys and original descriptions. During the morphological characterization, the chalcid specimens that did not fit into any species keys were compared with all existing species descriptions.
The study revealed the presence of Neohaltichella nilgirica Narendran in Kerala, which is a new record. In addition to the new record, the species Eniacomorpha bakeri Crawford 1915 is re-described with the addition of male characters.
A total of 13 Chalcid wasps obtained from different locations in Kerala were morphologically characterized and documented through photographs. This includes one new report and previously reported seven species belonging to 6 genera under 4 subfamilies. The documented species are, Neohaltichella nilgirica Narendran, Antrocephalus decipiens Masi 1929, Tropimeris monodon Bouček, Dirhinus anthracia Walker 1846, Eniacomorpha bakeri Crawford 1915, Eniacomorpha. madagascariensis Masi 1947, Epitranus erythrogaster Cameron 1888, Brachymeria apicicornis Cameron 1911, and one specimen of genus Antrocephalus Kirby 1883 and 4 specimens of genus Hockeria Walker, 1834.A complete checklist of all the reported species of Chalcids from Kerala was prepared which includes 143 species.
| Item type | Current location | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Theses
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KAU Central Library, Thrissur Theses | Thesis | 632.6 JAS/BI PG (Browse shelf) | Not For Loan | 175846 |
MSC
The study entitled “Biosystematics studies on the family Chalcididae (Hymenoptera: Chalcidoidea)” was conducted during 2019-22 at the Department of Entomology, College of Agriculture, Vellayani with the objective of identification, morphological characterization and documentation of family Chalcididae. The base material for the study was field-collected specimens. Purposive sampling was carried out in 11 locations spread across 6 districts of Kerala. The specimens were collected by random sweep net method.
The collections were carried out in the morning and afternoon hours (9AM to 3PM) when the insect activity was at its highest. The net sweep contents were immediately transferred to absolute alcohol and the locations and collecting dates were noted. Under a high-power stereo microscope, the specimens that were obtained from the field were sorted and stored in labeled vials with absolute alcohol. The chalcid specimens were card-mounted for morphometric analysis and characterization.
The chalcid specimens were keyed out based on regional taxonomic keys and original descriptions. During the morphological characterization, the chalcid specimens that did not fit into any species keys were compared with all existing species descriptions.
The study revealed the presence of Neohaltichella nilgirica Narendran in Kerala, which is a new record. In addition to the new record, the species Eniacomorpha bakeri Crawford 1915 is re-described with the addition of male characters.
A total of 13 Chalcid wasps obtained from different locations in Kerala were morphologically characterized and documented through photographs. This includes one new report and previously reported seven species belonging to 6 genera under 4 subfamilies. The documented species are, Neohaltichella nilgirica Narendran, Antrocephalus decipiens Masi 1929, Tropimeris monodon Bouček, Dirhinus anthracia Walker 1846, Eniacomorpha bakeri Crawford 1915, Eniacomorpha. madagascariensis Masi 1947, Epitranus erythrogaster Cameron 1888, Brachymeria apicicornis Cameron 1911, and one specimen of genus Antrocephalus Kirby 1883 and 4 specimens of genus Hockeria Walker, 1834.A complete checklist of all the reported species of Chalcids from Kerala was prepared which includes 143 species.
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