TRAUB & AUDY 
76 
Acknowledgements 
We are grateful to Mr. Thomas M. Evans of the Department of Entomology, Army 
Medical Service Graduate School, for having prepared the accompanying illustrations; to 
Miss Mary Lou Morrow, of that institution, for considerable technical assistance; to Mr. Tom 
Harrisson for his fruitful collaboration with the Sarawak collections; to Mr. H. Womersley 
for releasing specimens of T. micula n. sp. which he had simultaneously described in draft 
manuscript ; and to Messrs. M. Nadchatram and Lee Fatt-Hing of the Colonial Office Unit 
for their technical assistance in mounting and screening the collections. 
Summary 
Eight new species of Trombicula from North Borneo are described and figured. Of these, 
Trombicula flagellif era and T. tuhana , from Mt. Kinabalu, have a palpal formula N/N/NNN 
and possess mastifemoralae on Leg III. Trombicula vorca , from a bird on Kinabalu, with 
very large eyes and a palpal formula B/B/NNb, is one of a group with T. corvi Hatori, T. 
densipiliata Walch, and T. nissani Dumbleton. 
The remaining five species are all in the subgenus Leptotrombidium : (1) T. (L.) baluensis , 
from true shrews and gymnures on Kinabalu, and characterized by very heavy subpectinate 
bristles. (2) T. (L.) pipellae , on Kinabalu rodents and viverrids, with extremely long postero- 
lateral setae, a PW of over 90^ and a 2-pronged palpal claw. (3) T. (L) pilalta from Rattus 
and tree shrews on Kinabalu above 7,000 ft. elevation, with an exceptionally long AM seta, 
3-pronged palpal claws, and PW a over 91^. (4) T. (L.) micula , very close to T. (L.) deliensis 
with a smaller and less deep scutum, from Nannosciurus and other squirrels near Kuching, 
Sarawak. (5) T. (L.) tarsala , also from Kuching, unique in that the tarsala on leg I and II is 
as long as the tarsus is broad at this point. 
The vectors, T. (L.) deliensis Walch and T. (L.) akamushi Brumpt are redescribed in so 
far as is necessary for comparisons with the abo/e species and for purposes of fresh locality 
and host records. A means of differentiating these two species by means of the PW/Coxa-II 
ratio is offered. 
References 
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STUD. INST. MED. RES. 
