Til 10 1U-U)-BANDED TIlHIl'S. 23 



THE FULL-GROWN NYMPH OK PUPA. 



(PI. V, fiR. 4.) 



Length 1 .Oi7 mm. ; width at mosothoracic angU's 0.2507 mm. ; shape similar to adult. 

 Color translucent white to yellowish orange, first three segments and last segment of 

 the abdomen bright red. Head 0.1208 mm. in length, 0.1!)(J3 mm. in width; white, 

 with more or less orange (in older pupte surface distinctly reticulated); eyes oval, 

 dark red, larger than in prepupal stage, facets large; three ocelli present in close tri- 

 angle between the eyes in older pupae, white, surrounded by orange. Antennae laid 

 backward on head and reaching to beyond anterior edge of mesothorax; segments 

 indistinct, transparent white; segments 1 and 2 projecting more or less forward and 

 upward; on segment 2 a long slender seta, 0.1208 mm. in length, ])rojecting forward. 



Thorax (very plainly reticulated in older pupie) translucent white, with some 

 yellowish orange on mid-dorsal region. Protliorax 0.1057 mm. in length, 0.2114 mm. 

 in width, sides rounded. The entire ))ody wqU supplied with setae, those on posterior 

 angles of prothorax, on wing-cases, and on sides of the abdomen quite long. Wing- 

 cases 0.4934 mm. in length, extending to beyond anterior margin of segment 6 of the 

 abdomen, translucent white to faint yellow. Length from head to end of wing-pads 

 0.755 mm. Legs translucent white, very plainly reticulated in older pupae. Abdo- 

 men fusiform, surface reticulated in older pupae, general color translucent white to 

 yellow wdth the first three segments and the last briglit red; in some examples a patch 

 of bright green was observed, caused by food in the alimentary canal. Length of 

 abdomen 0.5889 mm.; widtli 0..302 mm.; length of posterior setae 0.906 mm. 



HABITS OF THE ADULT. 



The adults are found feeding on both the surface and underside of 

 the fohage. In many cases tliey are to be found niinghng on the 

 same k^af with Heliothrips Jicemorrhoidalis Bouche. The adults also 

 are found feeding in a colon}^ with the pupae and larvae, all in close 

 proximity to each other. They feed on the leaf content as do other 

 thrips, and in many cases rest alongside tlie leaf vem or under the 

 webs of the red spider. If disturbed or alarmed these insects were 

 observed to make long quick jumps or to crawl rapidly over the leaf 

 much faster than Heliothrips hsemorfhoidalis ever moves. There is 

 another peculiar trait possessed by members of this species, namely, 

 that the adults are often observed crawling on a h^af with the abdomen 

 lifted and curved forward over the body. They are apparently very 

 sensitive to cold, as adults that were placed on a cake of ice became 

 motionless at once, but began to move actively agam witliin a short 

 time after removal. 



This species, like H. hsemorrhoidalis, selects the tender young foliage 

 to feed upon, and while doing so the female deposits the eggs in the 

 leaf. After the female luis dei)osited each egg she seals the opening 

 with a large drop of excrement wliich dries to a flat scale so that the 

 egg-pocket is concealed. As these leaves begin to become exhausted 

 from the excessive feecHiig of the adults and larvae that have hatched, 

 the adults forsake them and attack the newer leaves of the plant. 

 While this insect was uucUt the observation of the writer, flight 



