DUFFEY TRANSFORMATIONS OF A CARABID, ETC. 5;^9 



against the ventral surface of thorax; eyes prominent, black; antennae 

 partly concealed ventrad by pro- and meso-thoracic legs. Metathoracic 

 legs covered to the tarsi by the inflexed wings. — Described from three liv- 

 ing specimens. 



Another garden and green-house pest — one to be especially 

 •dreaded in dry, hot seasons — is the little mite TctrauycJiiis tela- 

 ri7is, popularly known as the red spider. This little pest has 

 been apparently almost free from insect enemies, so far as I can 

 learn ; the only one published being an undescribed species of the 

 genus Tkrips. mentioned by Mr. Theodore Pergande (Psyche, 

 iii. 1SS2, p. 3S1). Mr. Howard tells me that " Pi'ofessor Riley's 

 unpublished notes state that a species of Dip/osis feeds in the 

 larval state upon these mites." 



Three insects have been observed to feed on red spiders at the 

 Botanical Garden this season : Thrips 6-maailaia, Pergande, (ws.),* 



* This is the species mentioned hy Mr. Pergande in Psjxhe, and of which he kindly 

 sends me the following description : 



" Thrips 6-maculata, n. sp. — Length of c5", 0.6-o.S mm.; 5 i about i mm. Polished. 

 Color pale yellow, the head almost white, t;he thorax darkest, the prothorax often more or 

 less distinctly marked with four small dusk}- spots and two oblique stripes; frequently the 

 anterior margin of the pterothorax, its disk, and a spot near the base of all the wings, are 

 also dusky, and also more or less of the anterior margin of the abdominal segments. The 

 legs are usually pale yellow with only the tip of the tarsi blackish, though now and then a 

 specimen may be met with the apex of the femora dusky and with a pale dusky spot in front 

 and behind, at base of anterior and median tibire. Antenna rather short, either pale dusky, 

 with only the two basal joints pale yellowish, or joints 3-5 whitish, with only the apex dusky 

 and the last tfiree joints blackish. Joints 3-5 subequal in length, the fourth almost globu- 

 lar, the sixth longest and longerthanthe two last ones combined. Head small, scarcely twice 

 as long as the eyes, and provided with two long, backward-curved bristles in front of the 

 posterior ocelli. Eyes brown, prominent, large, globular, and coarsely granulated. Ocelli 

 colorless or reddish. Prothorax longer than wide and well separated from the pterothorax, 

 narrowest in front, not or scarcely wider than the head, its posterior angles broadly rounded 

 and the surface quite coarsely wrinkled transversely; it is provided at the anterior angle 

 with a long, stout, pale bristle and a small hair near it, with two similar long bristles, 

 curved gently backward at the posterior angles, and two bristles which cross each other at 

 the posterior margin. Abdomen smooth with segments 3-7 furnished at the posterior an- 

 gle with a rather long bristle, and 6-S similar bristles fringing the remainder of the body. 

 Wings narrow, shorter than the body, colorless or faintly yellowish, with the veins pale 

 dusky; the anterior pair being ornamented with three more or less distinct or well-dtfined 

 dusky spots, of which the terminal one forms usually a band. One of them is placed at the 

 inner side near the base; the second one, often elongated, in front of the middle; and the 

 third at about the apical third of the wing. Both veins unite in the region of the median 

 spot, and continue as a single vein to the base of the wing, and are sparsely beset with 

 long and stiff bristles. Fringes pale dusky, stiff", and rather sparsely distributed, being 

 more dense and longer along the posterior edge. — Found on many different plants infested 

 with red spider, on which it has repeatedlj' been observed to feed. — This may probably form 

 a new ijenus." 



