Bioscience Discovery, 8(2):129-132, April - 2017

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Research Article

Morphological study of male genitalia of (Insecta: ) of subfamily

Dipak Phand and Dhairyashil Ahirrao

PG Department of Zoology, S.S.V.P.S. L.K. Dr. P.R. Ghogrey Science College, Dhule (M.S.) [email protected]

Article Info Abstract Received: 12-02-2017, Tryphoninae, the subfamily of Ichneumonidae is recognized by the compressed Revised: 14-03-2017, abdomen and brownish body. Most of the Tryphoninae species are Accepted: 17-03-2017 ectoparasitoids of larvae of . This subfamily is divided into seven Keywords: tribes which included 28 genera and 187 species in Indo- Australian area. In Male genitalia, male genitalia areorgans with the process of mating. The male genitalia Ichneumonidae, are one of the sound character in classifying various genera and species of the Tryphoninae, , recta, Ichneumonidae. The male genitalia of the Netelia (Apatagium) recta Netelia latrolatro (Enderlein) and Netelia (Toxichilodies) latrolatro (Holmgren) were described.

INTRODUCTION Tryphoninae and represented the subgenital plate, In the male genitalia were blunt and lateral view of half paramere and lateral view of morphologically external. Male genitalia are the aedeagus of the taxa. The male genitalia of Netelia organs with the process of mating. The male were figured for the first time by Townes (1939), genitalia was one of the sound character in who stressed that, these parts was of morphological classifying various genera and species of the significance in copulation with the females. Later Ichneumonidae. Peck (1937) and Pratt (1939) works on the male genitalia of this genus were those studied the male genitalia of Ichneumonidae. by Rao and Nikam (1970); Nikam (1973 a, b); Tryphoninae, the subfamily of Ichneumonidae was Gavino Delrio (1974); Kaur and Jonathan (1979); recognized by compressed abdomen and brownish Kazuhiko Konishi (1985) and (l986a, b). body. Most of the Tryphoninae species was In the present investigation male genitalia of Netelia ectoparasitoides of larvae of Lepidoptera. This (Apatagium) recta (Enderline) and Netelia subfamily was divided into seven tribes, which (toxochiloides) latrolatro (Holmgren) was studied. include twenty eight genera and one hundred eighty seven in Indo-Australian area. Morphology of Male genitalia of Ichneumonidae: In the recent years male genitalia of ichneumonidae The male genitalia of an Ichneumonidae (Fig la and has been taken into account for classification at lb) consist of paramere, volsella, gonolocina, various taxonomic categories. It was Netelia Grey aedeagus, subgenital plate and gonoring. Paramere where in male genitalia have been considered for was paired lobe exterior to the aedeagus. It acts as the first time segregating its various subgenera lever. Volsella was enclosed between paramere and (Kazuhiko Konishi, 1985; 1986 a and 1986b). aedeagus. Its apical region is known as distivolsella Netelia was one of the largest genus of Tryphoninae and it possess gonolacina on the side. It acts as and divided into nine subgenera. Peck (1937) sperm receptacle. attempted the male genitalia of subfamily http://biosciencediscovery.com 129 ISSN: 2231-024X (Online) Phand and Ahirrao Aedeagus was the cylindrical, pointed structure. Its in shape and acts as supporting sclerites in the apical region is called as penis valve, while the process of copulation. Gonoring is located at the basal region is termed as apodeme. It is useful for genital complex on which all the different parts of transfer of the sperms. Subgenital plate is variable genital complex are resting.

MATERIALS AND METHODS medioventral area flat. Basal apodeme of aedeagus The study on the male genitalia was attempted by was elongate, convex and curved. In the following method of Townes (1939). N.(Toxochiloides) latrolatro is aedeagus is Abdominal tips of the male Ichneumon flies were 0.875mm in length and 0.15mm in width. Pens cut off and treated with liquid ammonia for 16 valve tabular outwardly concave,apical end hours. Then different parts of genitalia were scattered pits are present and basal apodeme of separated under binocular microscope and were aedeagus is petiolate. processed through alcohol grades and mounted on The volsella : Distrenepasticizer xylene (DPX). The volsella of N. (Apatagium) recta was 0.625mm in length and 0.275mm in width. Convex in lateral RESULTS AND DISCUSSION view, laterally rounded mush bended downwards The male genitalia of Netelia (Apatagium) rectra and provided with marginal twelve pits and along (Enderlein) and Netelia (Toxochiloides) latrolatro periphery six spines. Remaining part of the (Holmgren) possess striking variations and volsellatrapezoid,bearing bristles in interior similarities as showed in Fig.2 and 3 region,medially broad, posteriorly blunt. In The subgenital plate : N.(Toxochiloides) latrolatro volsella is O.625mm in The subgenital plate of Netelia (Apatagium) recta length and 052mm in width. Dorsolaterally is was 0.625mm in length and 0.875mm in width. protruding into a round knob on flat area it bears Apical margin slightly convex, subapically concave, thirteen pits through which hair emerge out. dorsaledges straight with many spines and Posterior end is round and blunt. scales.Anticosta curved inwardly, smooth and The Gonolacina : shiny. Speculum very moderate thick and blunt. In The gonolacina of volsella in N. (Apatagium) recta Netelia (Toxochiloides) latrolatro (Holmgren) in was 0.225 mm in length and 0.125 mm in width. 0.75mm in length and 0.875mm in width. When Tip small like a bud with apex facing downwards, viewed from dorsal side it appears pentagonal, basically overlapping with the volsella at its apical curved with scales and smaller spines. Anticosta corner and bearing eight fine teeth on its surface. In smooth, deeply notched speculum triangular with N. (Toxochiloides) latrolatro gonolacina is pointed apex. 0.275mm in length and 0.075mm in width. It is The Aedeagus : attached to the dorsolateral margin of the The aedeagus of N. (apatagium) recta was 0.8mm in volsella,truncate at the free end having twelve pits. length and 0.2mm in width.Apical1y blunt, conical, Its outer lateral side is convex.

http://jbsd.in 130 ISSN: 2229-3469 (Print) Bioscience Discovery, 8(2):129-132, April - 2017 The Paramere : apically flat and spinose, outer two third part of the The paramere of N. (Apatagium) recta was 1.625 paramere fully covered with fine hair.Gonocoxal mm in length and O75 mm in width, medially arm tapering and pointed. Pad is located on broad,narrow towards the basal side with grounded subapicalportion,bluntly jointed to the pad apical margin. Basoapically with distinct, pointed dorsomedially. spinner Pad is situated above gonoforceps and The Gonoring : apically open. Brace narrow and tips of brace The gonoring of N. (Apatagium) recta was 0.5mm laterally tapering. Pad pointed and touching each in length and 0.025 mm in width attached below the other, brace prominent, outer two third part of paramere, apically pointed, medially narrow and paramere fully covered with fine hair. Gonocoxal nasally tubular. In N.(Toxocholoides) latrolatro is arm tapering and label. In N. (Toxochiloides) 0.75mm in length and 0.25mm in width. Apically latrolatro is 1.5 mm in length and 0.875 mm in blunt, medially broad and nasally narrow. width. Broad in middle, pointed at basal side,

The value of the male genitalia of Hymenoptera for The parameters are important sclerites separating taxonomy has been discussed for the first time by various groups and subfamilies of the Peck (1937). Immediately a noteworthy attempt was Ichneumonidae Peck 1937. The volsella is variable made by Pratt (l939). In majority of the in its shape and structural peculiarities, since it Hymenoptera, the lateral and posterior margins of basically takes apart in finding,clasping and subgenital plates has specific values as in stretching the membrane lying adjacent to the Ichneumon - Linnaeus (1758), Nikam 1973a and female gonopore of Ichneumonidae. The lateral 1973b, Phand and Ahirrao, 2013, 2015a and 2015b. semicircularsclerites form the angular gonocardo variations in the shape of gonoring have been noted.

http://biosciencediscovery.com 131 ISSN: 2231-024X (Online) Phand and Ahirrao A typically Ichneumonidae aedeagus is weakly Nikam PK, 1973a. Studies on Indian depressed and cylindrical with its posterior apex Ichneumonidae, three new species of Netelia curved centrally. This is the intromittent organ and (Netelia) GrayTryphoninae from Marathwada. J. thus being important, Peck (1937) noted fine Zool. Soc. India 25: l - 2. species which were divided into three groups on the Nikam PK, 1973b. Studies on Indian shape of aedeagus. Similar structure was observed Ichneumonidae,key to the Indo-Australian species in male genitalia of subfamily Pimplinae (Phand of Netelia (Netelia) Gray Marathwada. and Ahirrao, 2013, 2015a and 2015b). Univ.J.Zool.Soc. India 12(5):113-124. ACKNOWLEDGEMENT Peck O, 1937. The male genitalia of Hymnoptera, The authors are grateful to the President, Chairman, especially the Ichneumonidae, Can. J. Res., 15 (D) Secretary and Principal of S.S. V.P.S L.K Dr.P.R (12): 21-274. Ghogrey Science College Dhule. Phand DL and Ahirrao DV, 2013.Morphological diversity of the male genitalia of Ichneumonidae REFERENCES (Insecta: Hymenoptera) of subfamily Pimplinae – Gavino Delrio, 1974. Revision desespecesouest III. Int. J. Biotech Biosci., 3(4):282-285. palerctiques da genera Natalia Gary (Hymenoptera : Phand Deepak L and Ahirrao Dhairyashil V, Ichneumonidae). Instituto di Entomologia aqraria 2015a. Morphological study of male genitalia of dell Universita di Sassari vol. XXlll pp. 1-126. Ichneumonidae (Insecta: Hymenoptera) of Kaur, Raminder and Jonathan JK, subfamily Pimplinae – I. Journal of Experimental 1979.Ichneumonologiaoreintalis, partVlll. The tribe Biology and Agricultural Sciences, 3(1): 32-36. phytodietini from India (Hymenotra: Phand Deepak L and Ahirrao Dhairyashil V, Ichneumonidae). 2015b. Diversity of the male genitalia of Kazuhiko Konishi, 1985. A revision of the ichneumonidae (Insecta : Hymenoptera) of subgenus Parabates Foerster of the Genus Netelia subfamily Pimplinae – II, Life Science Bulletin, Gray from Japan (Hymenoptera : Ichneumonidae). 12(1):49-51 KontyuTokyo. 53(4):616-624. Pratt HD, l939. Studies on the Ichneumonidae of Kazuhiko Konishi, 1986a. A revision of the New England, 2: The male genitalia of the subgenus Apatagium Enderlin of the Genus Netelia subfamily Ichneumonidae. Annexure Entomological Gray from Japan (Hymenoptera: Ichneumonidae). society Amsterdam, 32:727-742. Kontyu Tokyo.54(2):261-270. Rao SN and Nikam PK, l970. Studies on Indian Kazuhjko Konishi, 1986b. A new subgenus and Parasitic Hymenoptera (Ichneumonidae) from species of the Genus Netelia Gray from Marathwada, subfamily Tryphoninae. Marath. Japan(Hymenoptera : Ichneumonidae) from New Univ. J. Sci.,9 (2):99-102. Guinea. Kontyu Tokyo.54 (3):415-419. Towens H, 1939. The Nearctic species of Netelia Linnaeus C, 1758. Systemanaturae per regnatria (Paniscus of author) and a revision of genera of natural, secundum classes, orlines, genera, species Netelini (Hymenoptera : Ichneumonidae) 1:168- cum characteribus different is a synonyms, locis, 231. edition decima, rofonnata. Tom. I. Laurentil Salvii, Holmiae, pp 844.

How to Cite this Article: Dipak Phand and Dhairyashil Ahirrao, 2017. Morphological study of male genitalia of Ichneumonidae (Insecta: Hymenoptera) of subfamily Tryphoninae. Bioscience Discovery, 8(2):129-132.

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