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Hymenoptera: Ichneumonidae: Pimplinae) from Malaysia Serangga 15(1-2): 9-24 ISSN 1394-1530 © 2010, Centre for Insect Systematics, Universiti Kebangsaan Malaysia & Department of Museums Malaysia ONE NEW SPECIES AND ONE NEW RECORD OF THE GENUS ZAGLYPTUS FOERSTER (HYMENOPTERA: ICHNEUMONIDAE: PIMPLINAE) FROM MALAYSIA Alia Rizki & Idris, A.B. Centre for Insect Systematics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia 43600 Bangi, Selangor, Malaysia E-mail: [email protected] ABSTRACT One new species, Zaglyptus ruslani sp nova and one new record, Zaglyptus nigrolineatus Gupta from Malaysia are described. One holotype species, Zaglyptus indicus nigrithorax Gupta is also redescribed. A key to species is provided. Keywords: Ichneumonidae, Ephialtinae, Pimplinae, Zaglyptus, Malaysia ABSTRAK Spesies baru, Zaglyptus ruslani sp nova dan satu rekod baru, Zaglyptus nigrolineatus Gupta telah diperihalkan dari Malaysia. Satu spesies holotip Zaglyptus indicus nigrithorax Gupta telah juga pun diperihalkan kembali. Kekunci untuk spesies daripada Malaysia disediakan. 10 Serangga Kata kunci: Ichneumonidae, Ephialtinae, Pimplinae, Zaglyptus, Malaysia INTRODUCTION The Zaglyptus belonging to the tribe Ephialtini (Pimplini sensu Townes 1969), was assigned to a genus by Foerster (1869) based on the type species Polysphincta varipes Gravenhorst and designed subsequent by Woeldestedt (1877). However, Gauld et al (2002) classified Zaglyptus to the Polysphincta genus-complex (Hymenoptera: Ichneumonidae: Pimplinae) based on phylogenetic analysis of this suprageneric group. The first Oriental species was described by Cushman in 1933 as Z. formosus from Formosa. Recently Gupta (1960) had revised this genus for oriental region and found only Z. indicus nigrithorax Gupta from Malaysia (Yu & Horstmann 1997). Zaglyptus is worldwide in distribution but contains relatively few species. This genus is koinobiont ectoparasitoid of spider. Within a silken nest of an egg sac-guarding spider female, their larvae are able to develop on both the spider’s eggs and the female (Finch 2005). For example, Z. varipes Gravenhorstr attacks nest- making spiders that place their egg cocoons within nest (Townes 1969). In the present study, the genus Zaglyptus was revised for the first time for Malaysia. Zaglyptus ruslani sp. nov. was found to be as new spesies while Zaglyptus nigrolineatus Gupta was redescribed and that it is a new record for Peninsular Malaysia. MATERIALS AND METHODS Morphological terminology used in this study follows the modified Townes’s system (1969). Specimens were examined by stereo microscope (Zeiss Sterni SV 11 Apo) and key characteristics are shown in photographs produced with Zeiss AxioCam MRc (version 5.05.10) and optimized with an Image Analyzer system. Materials used for this work were collected by Malaise Trap (MT) and sweeping net, and have been deposited in Centre for Insect Systematics, School of Environmental and Natural Resource 1st proof - Nov 2010 Alia Rizki & Idris 11 Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia (CIS-UKM). The type specimen of Z. indicus nigrithorax Gupta was loaned from United States National History Museum, Smithsonian Institution, Washington D.C. (WASHINGTON). TAXONOMIC ACCOUNTS Family Ichneumonidae Latreille, 1802 Subfamily Pimplinae, Tribe Ephialtini Hellen, 1915 Genus Zaglyptus Foerster Zaglyptus Foërster, Verh. Naturh. Ver. Rheinlande 25: 166. 1869: 25. Type: Polysphincta varipes Gravenhorst. by subsequent designation, Woeldestedt, 1877: 17. Diagnosis Distinguished from other genera of Ephialtini by the following characters: 1) propodeum with a lateral subapical tubercle, the tubercle strong in female, weak in male; 2) basal tooth of lower valve of ovipositor mostly smooth, finely roughened toward the tip and with an elongate free tip. Description Small insects (fore wing length 3-7 mm). Body a little less long and slender than most other Ephiltini. Face and clypeus variously colored, reddish black or yellow or white. Clypeus not divided into basal and apical parts. Clypeus margin thin, concave; mandible not twisted, strongly tapered with uppertooth distinctly longer than the lower tooth; occipital carina complete, mediodorsally more or less convex; upper part of gena smooth; male with lower part of gena simple; subocular sulcus absent. Pronotum moderately long, with anterior margin slightly reflexed, lower corner rounded in front, angled about 90º behind, very slightly in turned; epomia small but distinct; mesoscutum finely punctate with notauli moderately impressed anteriorly; prepectal 1st proof - Nov 2010 12 Serangga carina present; mesopleural suture weakly but quite distinctly angled centrally; submetapleural carina discernible only as an anterior vestige; propodeum quite short, but convex and with strong pale posterolateral swellings and a median posterior swelling, polished, with at most only the pleural carina discernible; propodeal spiracle subcircular. Claws of female with a pointed basal lobe. Fore wing with areolet absent. Nervelus intercepted usually above the middle. First tergite short and broad, with an oblique groove on each side just beyond the middle, its median and lateral longitudinal carinae present or absent. Second tergite with rather sharp oblique basolateral grooves and oblique apicolateral grooves which together delimit a median, raised, rhombic area. Third and fourth tergites with strong transverse tubercles, their apical impunctate bands occupying 0.22 their length. Female subgenital plate sclerotized apically and apicolaterally, the rest membranous. Ovipositor straight, compressed, with basal tooth enlarged and forming a long free barb. Ovipositor sheath smooth, finely granular toward the tip. Ovipositor sheath about 0.47 as long as fore wing. Zaglyptus is a moderately small cosmopolitan genus, Zaglyptus species are believed to attack spider In this present study, the genus Zaglyptus was revised for the first time for Malaysia. Zaglyptus ruslani was described as new spesies and Zaglyptus nigrolineatus Gupta as new record for Malaysia has been redescribed. Keys to the species Zaglyptus Fo½rster from Malaysia 1 Notauli weakly impressed; face black; submetapleural carina complete; swellings on the tergite smooth................................indicus nigrithorax Gupta Notauli deeply impressed; face yellow; submetapleural carina present along anterior part as a short n sharp ridge reach middle coxae; swellings on the tergite with punctures.....................................................................2 2(1) Mesoscutum almost yellow with three black stripes; face without black marks in the middle. Propodeum with 1st proof - Nov 2010 Alia Rizki & Idris 13 rectangular spot at the basal. First tergite with black triangle spot at the basal............nigrolineatus Gupta Mesoscutum almost black with yellow median lobe; black spot at the middle of face; propodeum with black band at the basal and apical. First tergite with black triangle spot from basal to apical.......ruslani sp. nov. Zaglyptus indicus nigrithorax Gupta (Fig. 1) Zaglyptus indicus nigrithorax Gupta, 1961, Indian J. Ent., 22: 50. ♀. Key. Des. Type: ♀, Malaysia: Pahang: Lubok Tamang, 3500 ft., Pahang State, at light, 7-VI-1923, H.M. Pendlebury (WASHINGTON) [checked]. Diagnosis This species is clearly distinguished from other species of Zaglyptus by notauli weakly impressed; face black; submetapleural carina complete; swellings on the tergite smooth. Description Female. Head. Face shiny with a few hairs and a shallow impression on each side; frons shiny; frontal orbital smooth; middle apical of clypeus with bilobed clift; clypeus finely scattered punctate, shiny with a few hairy; epistome suture with shallow impression; malar space without subocular grooves; malar space 0.5 the basal width of the mandible; shiny and rugulose in the middle; maxilla palp with four segments; labium palp with three segment; mandible moderately large and weak; upper and lower mandible equally in size; pedicel smaller; vertex shiny and smooth; occipput present; occipital carina present and convex. Thorax. Notauli weak; with upper part of pronotum smooth; mesoscutum hairy with sparsely fine punctate; mesopleurum smooth; speculum smooth; metapleurum shiny; skutelum shiny and impunctate; propodeum weakly punctate on each lateral medially; submetapleural carina complete; propodeal spiracle weakly round; basal carina of propodeum absent; apical carina of propodeum very short. 1st proof - Nov 2010 14 Serangga Wings. Areolet present; receiving second recurrent vein basad of its second intercubitus vein; nervulus opposite of basal vein; discoidella present; nervellus intercepted below the middle. Abdomen. First tergite with complete lateral longitudinal beyond the spiracle; first tergite length longer than width; strongly punctate on basal part; second tergite width longer than length; anterolaterally with distinct oblique grooves making an angle<40º; middle part of tergite with strong and deeply punctate but basally smooth; third to seventh tergite with impunctate swelling on lateromedian part; apically smooth and basally with densely rugosopunctate. Ovipositor. Ovipositor sheath with short hairy, ovipositor of approximately uniform size and tapered to the tip; tip of ovipositor sharp; basally normal; lower valve distinct and uncovered upper valve. Color. Antenna brownish; scapus and pedicel yellowish white; vertex black; frons black; face black; clypeus brownish black; occiput black; post-occiput black; pronotum black; mesopleurum black; mesoscutum black;
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