ON A COLLECTION OF SCARABAEIDAE (INSECTA: COLEOPTERA) FROM ARUNACHAL PRADESH WITH THE DESCRIPTION OF A NEW SPECIES

There is very little published information on the Scarabaeidae of Arunachal Pradesh (N. E. F. A.). Tne present paper would be the first account of the family from the area. It is based on 206 specimens of Scarabaeidae belonging to the subfamilies Cetoniinae, Dynastinae and Rutelinae, collected by various survey parties from the Zoological Survey of India in the Arunachal Pradesh. These surveys were conducted by Dr. K. C. Jayaranlakrishna, Shri S. Biswas, Dr. A. N. T. Joseph, Dr. S. K. Tandon and Dr. 1. M. Julka. This collection comprises 20 species of which one species is new to science and described below. All the species wnich nave been dealt with in the present paper, are recorded for the first time from Arunachal Pradesh. It has been observed that these species are abundantly distributed in the north eastern part of India. Further these species so far have not been found from south India.


INTRODUCTION
There is very little published information on the Scarabaeidae of Arunachal Pradesh (N.E. F. A.). Tne present paper would be the first account of the family from the area.It is based on 206 specimens of Scarabaeidae belonging to the subfamilies Cetoniinae, Dynastinae and Rutelinae, collected by various survey parties from the Zoological Survey of India in the Arunachal Pradesh.These surveys were conducted by Dr. K. C. Jayaranlakrishna, Shri S. Biswas, Dr. A. N. T. Joseph, Dr. S. K. Tandon and Dr. 1. M. Julka.This collection comprises 20 species of which one species is new to science and described below.All the species wnich nave been dealt with in the present paper, are recorded for the first time from Arunachal Pradesh.It has been observed that these species are abundantly distributed in the north eastern part of India.Further these species so far have not been found from south India.LIST  Distinctive characters: Elongate and narrowed posteriorly, antennal club three-jointed and long; elytra reddish with three black spots on base, apex and near middle; blackish head and pronotum with two and four longitudinal lines respectively; scutellum and pygidium each with one longitudinal ~edian line; length 15 .5 mm, breadth 8 mm Remarks: This species was previously recorded from differen parts of northeast India.Distinctive characters : Elongate, pale pinkish olivaceous and faintly greenish above and leafy green beneath; clypeus green and deeply punctate at the sides; antennae brownish; pronotum shiny, deeply punctate at sides and nearly impunctate at the middle; scutellum dark green; elytra coarsely punctured at tile apex; tarsi black; pygidium with brownish hairs; length 30-31 mm.; breadth 13 5-15 mm.Remarks : This species \videly distributed in the different parts of Northen India and Pakistan.
Distinctive characters: Elonga:te, bright green with pinkish reflections above; antennae and tarsi brown; prothorax strongly punctate laterally and finely at the middle; apical part of the elytral margins and pygidium rugose; metnsternal process slender, slightly pointed and str()ngly curved at the apex; metasternum smooth, finely punctate and nairy at the sides, with a median line in the middle; length 20.Srnm.; breadth 9.Smm.
Remarks : This is rare species, previously reoorded from Siktim and Darjeeling.

TrigoDophoros nepalensis Hope
183t Tr;gonophorus Ilepalensis Hope, Gray's Zool.Miscel/., p. 24.Broad, robust and convex, coppery or greenish ~ith.whitish hairs oxcept middle of the metasternum and abdomen, upper surface opaque with partial metallic lustre : head.feebly rugose in front and densely punctate with long hairs and• a fine median ridge posteriorly; abrU:ID semirounded laterally and feebly notched in (ront, labrum and clypeua reftexed along margins; eyes moderately large with small hairs over and around it; antenna ten segmented, segment I three times longer than globular segment IT, segments III-VII smaller than II, VIII-X forming club; pronotum narrow in front, wider posteriorly, moderately lobed behind, slightly curved and rugose at the sides; elytron generally coppery or greenish with 5-6 pale yellow patches and a few spots, sometimes patches and spots confluent anu their number variable, humerus elevated in the middle, feebly punctate-striate with fine long hairs, strongly sinuated behind humerus, apical angles slightly rounded; pygidium finely rugose with long hairs, two lateral and one median spots whicn sometimes confluent; ventral side more hairy and shiny, mentum bilobed with hairs; maxillary palpi four segmented and labial palpi three segmented, apical segment of each palpus fairly long and narrow; prosternwn short; mesosternal process extremely short, stout and blunt; metasternum impunctate in the middle and rugose at the sides; front tibia tridented; each of meso and meta tibia with two pointed spurs at apex; stel"nites sparsely punctate in the middle, densely punctate and hairy laterally; lengtn 10-14 mm.; breadth 6-8 mm.

Trigonophorus nepalensis
In male abdomen broadly channeled at the middle and larger than the female.Remarks' : This new' species is closely allied to cliuteria hoffmeisteri White, but can be readily• distinguished by its smaller size, absence of pale yellow markings on the lateral side of the pronotum, moderately lobed pronotum and impunctate metasternum in the middle.
Distinctive characters: Body slender, more or less parallel sided, black head, pronotum and elytra coarsely punctured; metasternum finely punctate in middle and strongly punctured and pubesent along sides; antennae small; pygidium co~vex and closely punctured; length 24.5 mm. ; breadth 10.5 mm.

Remarks:
The present study is based on a single specimen collected from Arunachal Pradesh, but it was previously recorded from Naga Hills, Manipur, Uttar Pradesh,Andaman and Nlcobar Island, Burma and Bangladesh.Distinctive characters: Short, rubust and convex, very smooth and bright; indigo-blue or deep steel blue; clypeus and front finely and closely rugose, vertes closely punctured; antennae light brownish; pronotum closely punctate laterally, smooth and shiny in the middle; each elytron with a deep transverse impression near the sutural margin before the middle; meso-sternal process well produced, broad and apex bluntly rounded; pygidium coarsely punctured; length lO-l2mm.; breadth 5.5-7 mm.Remarkj: This species is abundantly found in the North India.
Distinctive chatacters: Elongate oval, bright 'and smooth, body and legs deep metaUic green; clypeus broad, litt~o elevated in the middle an d. slightly rugose, fron t densely punctured; pronotum sub-round'ed pUnctured in front rugose at the sidc& wit red markings upon cae siec of middle; scutellum broad and finely pnnctate, eacneIytron with mediall vitta.and witn• distinct rows of punctures on outer half; pygidlum with fine scattere d punctures; mesosternum impunctate in tne middle with distinct sctiferous puncture at the .sides,mesosterna!process snort and aQute; abdomen rugosely punctate at the ~ides a~d impuDctat eat the middle; length 16.5-18 mm., breadth 9.5-10 mm.Distinctive characters: Small, ovate, smooth and shiny;' upper s~rr~ce.and pygidium pinkish yellow; head and pronotum slightly reddish pink, pronotum finely punctate along sides-and nearly impun .. .Distinctive characters : Elongnte and small, parallel-sided and slightly depressed posteriorly; bright yellow with .palemetallic green lustre on head and middle of pronotum, head densely.rugose; elytra st.rongly and corsely, punctate-strigate; scutellum short and smoqth; legs long and bright yellow with blnckish brown apices of hind tibia and tarsi, fore tibiae broad, flat and bidentate; length 7 mm.; breadth 4 mm.

Remarks:
It has already been recorded from different parts of North East India and Nepal.