Thysanoptera [Tuhulifera) from Papua. 359 



Family PMoeothripidae, Uzel. 

 Genus Macrothrips *, nov. 



Head at least twice as long as broad and longer than the 

 length of the piotliorax ; cheeks set with long spines. Eyes 

 comparatively small ; ocelli present. Antennce longer than 

 head; intermediate joints much elongated; sense-cones 

 small and inconspicnous ; hairs very small and fine, giving 



the joints the appearance of being naked. Mouth-cone 



Prothorax not more than two-thirds the length of head, 

 very abruptly raised to the posterior edge, thus throwing 

 the disk into a vertical position ; posterior edge forming a 

 strongly sculptured corona terminated at each posterior angle 

 by a large spine-sot tubercle. Anterior coxce (of male) 

 abnormally produced; apices of fore tibiaa and tarsi armed 

 with teeth. Fore legs of male greatly enlarged, femora 

 thickened and each with a large broad-seated tubercle or 

 blunt tooth at the base within. Wings present. 



Abdomen comparatively broad and heavy. 



Species large and massive. 



Type. M. papuensis, mihi. 



There are two carded specimens in this collection, one of 

 each sex. At first I was inclined to regard them as the sexes 

 of one species, but, owing to the strong and divergent 

 characters, which, I think, cannot be only sexual, they must 

 be described as separate species. Further, the male specimen 

 is very much larger than the female, whereas the males in 

 the Phloeothripidse are almost invariably smaller than the 

 females. 



Macrothrips pajyuensis, sp. n. (PI. XV. figs. 9-11.) 



^. Length 11 mm., breadth of mesothorax 2 mm. 



General colour very dark brown, tibiae and tarsi reddish 

 brown. 



Head three times as long as width of cheeks ; immediately 

 behind eyes narrower than the width across eyes, but filling 

 out gradually and narrowing again before base; cheeks full 

 and set with long white bristles or spines; vertex raised. 

 {Surface shining, finely and transversely striate, base faintly 

 reticulate, a belt of close punctures across centre, wrinkled 

 transversely behind eyes and narrowly sculptured between 

 ocelli. A strong backwardly curved protuberance set with a 

 fahort stout spine behind each eye. Eyes comparatively 



* Macro = h\Vi:e. 



