INTRODUCTION

Saltatorial leaf-feeding Thysanoptera (Thripidae:Dendrothripinae) from Pakistan has been recorded.Thrips of the subfamily Dendrothripinae are re-markably saltatorial. They have an elongate andcharacteristically lyre-shaped metathoracic endo-furca, to which are attached the powerful musclesused by these minute leaf-feeding thrips whenjumping (Mound, 1999). Out of a world fauna inthis subfamily of 10 genera and 86 species, six gen-era and 11 species are here recorded from Australia(Mound, 1999). The species of Pseudodendrothripsare known as damaging mulberry leaves and thesouth-east Asian Morus pest P. bhattii Kudô is awidespread pest of Morus that represents a singlespecies.

Pseudodendrothrips in the present studies hasbeen recorded from the already reported host plantmulberry along with potato for the first time fromPakistan.

MATERIALS AND METHODS

Thrips were collected from leaves of mulberryand potatoes following the already adopted method.Thereafter, the slide making procedure of Palmer

et al. (1999) was followed and the specimens werefinally mounted in Hoyer’s medium.

These were identified with the help of availableliterature, detailed description along with measure-ments and illustration of various body parts havebeen provided for future references.

Abbreviations:Abdomen length (Abd. L); Antennal segment (A

(n). L.); Body length (B.L.); Femur length (Fem. L.);Fore wing anterior fringe of hairs number (FWFHant. #); Fore wing fore vein setae number (FWFVS#);Fore wing costal setae number (FWCS#); Fore winglength (FWL.); Head length (H.L.); Head width(H.W.); Hind wing length (HWL.); Hind wing fringeof hairs posterior number (HWFH post. #); Meso-thorax width (Meso. W.); Metafurca length; Meta-thorax width (Meta. W.); Ovipositor length (Ovi. L.);Posteroangular (Pa); Posteromarginal setae length(Pm (s) L.); Prothorax length (Pro. L.); Prothoraxwidth (Pro. W.); Pterothorax length (Ptero. L.);Sense cone length (Sen. C.L); Tarsus length (Tar.L.); Tibia length (Tib. L.).

RESULTS AND DICSUSSION

The subfamily Dendrothripinae is represented bya single genus Pseudodendrothrips along with onespecies from Pakistan. The detailed taxonomic char-acters of this genus and the species are provided

* Corresponding authorE--mail: apwaseem18@yahoo.com, Tel: 82-63-270-2528

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Saltatorial Leaf Feeding Genus Pseudodendrothrips(Terebrantia: Thysanoptera) and Its Species from Pakistan

AKRAM, Waseem*, Byung-Sik SHIN1, Chang-Yeon HWANG and Jong-Jin LEE

Faculty of Bio-Resources Science, College of Agriculture, Chonbuk National University, Jeonju 561-756; 1Department of Biology, Changwon National University, Changwon 641-773, Korea

ABSTRACT A single genus Pseudodendrothrips from the Subfamily Dendrothripinae has been collected for thefirst time from Pakistan and is represented by a single species, Pseudodendrothrips bhatti Kudo. This species has beencollected from mountainous to sub-mountainous tracts and is easily identified on the basis of meta-furca which ismuch enlarged and hind tarsus which is greatly enlarged contrasting to fore and mid tarsi. Detailed description alongwith differential characters, measurements and illustrations of the genus and the species are provided for the futurereferences.

Key words : Pseudodendrothrips, P. bhatti, Systematics

KOREAN JOURNAL OF ENTOMOLOGY Vol. 33, No. 2, pp. 69~~72, June 2003

Korean J. Entomol., 33(2), June 2003

for the future references of thripists from Pakistan.

Genus Pseudodendrothrips Schmutz, 1913

Pseudodendrothrips Schmutz, Sitz. Akad. Wissen.Wein 122: 992.

Small sized. Head narrow, twice as broad as long;Checks shorter than eyes and narrow towards

base; eyes larger and bulging; ocelli inside the tri-angle, set close together, area behind the posteriorocelli to the vertex provided with well-developedwrinkles; IOS inside the OT; AOS two pairs andequal to IOS; POS absent (Fig. 1a). Mouth conemoderately long; maxillary palpi 2-segmented(Fig. 1c). Antennae 9-segmented, globular andnarrowing from A4 towards apex, A3-4 with forkedsense cones, the latter with cone longer than the

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a b c

d

e

f

Fig. 1a-f. Pseudodendrothrips bhatti: a) Head and Pronotum; b) Antennal segment 6-9; c) Maxillary palpi; d) MNS; e) Meta-furca; f ) Meta tarsus.

Akram et al. -- Pseudodendrothrips 71

former, A6 with inner sense cone arising from base(Fig. 1b).

Pronotum transversely striated with blotch areabetween striation; Pa one while Pm three pairs,discal setae six pairs and shorter. Mesoscutumwith apodeme on anterior, transversely striate pos-terior to apodeme, median setae posteriad; MNSsculpture with closely packed wrinkled reticlesmedially held vertical, while those latter large,MMNS away from anterior margin; metafurcagreatly enlarged (Fig. 1d). Fore wings with costalmargin straight, pointed apically, fringe anterior,arising slightly away from coastal margin. Tarsi 1-segmented, hind greatly enlarged contrasting tofore and mid (Fig. 1f ).

Abdomen with subdivided longitudinal lateralstriation; median setae on terga closely held enlarg-ing towards posterior terga; T8 with comb regularand fine; T9-10 with microtrichia on posterior half;sterna transversely striated with three pairs ofposteromarginal setae. Ovipositor short not exceed-ing the 10th segment.

Comments. This genus has been collected forthe first time from Pakistan and thus has added tothe list of total genera collected.

Pseudodendrothrips bhatti Kudo, 1984Pseudodendrothrips bhatti Kudo, Kontyu, Tokyo,

52(4): 487-505.

Female (Macropterous). Yellow; head brown infront of anterior ocelli to vertex; pronotum slightlyshaded brown; fore wings except base and distalhalf light brown; A1-2 grey.

Head. Broader than long; sculpture with trans-verse striation between eyes to vertex. Eyes largerthan cheeks, area between facets provided witheight strong setae; IOS inside the OT, just abovethe posterior border of the ocelli, equal to AOSwhich are in two pairs; POS absent (Fig. 1a). Ante-nnae 9-segmented, A3-4 with forked sense cones,the latter with three rows of microtrichia each.Mouth cone moderate; maxillary palpi 2-segment-ed.

Thorax. Pronotum transversely striated withblotch areas; Aa, Am absent; Pa (57.14 µm) and Pm(34.28 µm) one and three pairs respectively; discalsetae six pairs and 22.85 µm long. Metanotumlongitudinally striated medially while laterallywith broad reticulations, MMNS away from anteri-or margin and closely held (Fig. 1d). Characteristi-

cally lyre-shaped metathoracic endofurca greatlyextended. Fore wings with 21 costal setae, shorten-ing towards apex; fringe anterior 25 while posteriorHWFH 54; FWFV with three basal and two distalsetae. Hind tarsi 134.27 µm.

Abdomen. T4-7 with posteromarginal microtri-chia in the middle. B1 on T9 slightly shorter thanB3 but longer than B2. Ovipositor very nearly reach-ing base of 10th segment.

Comments. The collected female specimenslargely tallies with the published description ofKudo (1984) of this species, but differs in the follow-ing characters and measurements (µm):

Head equal to the length of pronotum, latter with12 discal setae; fore wings with brown band, fadingtowards apex; scale pale; fore and mid tibiae un-shaded.

Measurements (µm): 1♀B.L. (1128.00); H.L. (105.70); H.W. (174.27); A.n.

L. (28.57; 37.14; 42.85; 41.42; 37.14; 34.28; 31.42;19.99); Sen. C.L. on A3 (22.85); Sen. C.L. on A4(31.42); Sen. C.L. on A6 (45.71); Pa. L. (59.99); PmS.L. (34.28; 28.57; 19.99) Pro. L. (105.70); Pro W.(191.41); Ptero L. (314.27); Meso. W. (281.41); Meta.W. (278.55); Meta furca L. (139.99); FWL. (636.93);

HWL. (566.16); FWFVS# (22); FWCS# (21); FWFHant. # (25); HWFH post. # (54).

Abd. L.606.60; Ovi. L. 188.56; Abd. L.9 & 10(128.56).

Material Examined. Jahlar (Chakwal) 1♀, 20VIII 1997; Kalam 1♀, 20 VI 1997.

Habitat. Mulberry (Morus alba); Potato (Solanumtuberosum).

Comments. This species has been recorded forthe first time from Pakistan and a single femalespecimen has been deposited in the Insectary,Department of Agri-Entomology University ofAgriculture for future references.

REFERENCES

Palmer, J.M., L.A. Mound and G.J. du Heaume, 1992. II

Femur Tibia Tarsus

Meta leg L. 125.70 145.70 134.27

Meso leg L. 91.42 99.99 71.42

Pro leg L. 91.42 102.85 65.71

Korean J. Entomol., 33(2), June 2003

Guides to insect of importance to man. Thysanoptera (Lon-don) International Institute of Entomology. Brit. Nat. Hist.Mus., 1-73.

Kudo, I., 1984. The Japanese Dendrothripini with descriptionof four new species (Thysanoptera: Thripidae). Kontyu,Tokyo 52(4): 487-505.

Mound, L.A., 1999. Saltatorial leaf-feeding Thysanoptera

(Thripidae: Dendrothripinae) from Australia and NewCaledonia, with newly recorded pests of ferns, figs andmulberries. Australian Journal of Entomology 38(4): 257-273.

(Received 21 April 2003; Acceptded 2 June 2003)

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