Vol. XXV, pp. 11-16 March 19, 1912 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



THREE NEW PHLCEOTHRIPID^ (THYSANOPTERA) 

 FROM TEXAS AND MICHIGAN. 



BY J. DOUGLAS HOOD, 



Illinois State Laboratory of Natural History, Urbana. 



The three species described below are large, striking, and 

 conspicuous. All are distinguishable at a glance from their 

 known North American relatives. It is perhaps to be regretted 

 that two are represented by unique males, one of which is 

 macropterous and the other brachypterous ; but, after nearly 

 four years, they are here described that the genus which they 

 represent may be placed on record as a member of the fauna of 

 the United States. 



Phloeothrips vittatus sp. nov. 

 Female. — Unknown. 



Male. — Length about 2.2 mm. Dorsal surface closely reticulate, non- 

 shining; ventral surface smooth. General color by reflected light, dark 

 mahogany brown, with a narrow, latero-dorsal, white stripe extending 

 along the sides of the prothorax and abdomen and terminating on the 

 seventh abdominal segment; this stripe is about as wide as the antenna, 

 ami is interrupted only on the pterothorax, where it is entirely wanting. 

 General color by transmitted light, yellowish brown, with maroon hypo- 

 dermal pigmentation; legs and tube blackish brown, non-pigmented; 

 antenna' nearly concolorous with body and with the intermediate seg- 

 ments yellowish at base and apex. 



Head about 1.2 times as long as wide ; dorsal and lateral surfaces closely 

 and strongly reticulate and with several moderately prominent spiniferous 

 tubercles, of which those on the cheeks and four near center of dorsum* 

 are especially noticeable; cheeks subparallel, converging rather abruptly 

 to the eyes; postocular hristles lacking. Eyes moderately large, finely 

 faceted, contained in length of head about two and one half times, and 

 slightly narrower than their interval. Ocelli suhapproximate, opposite 

 center of eyes. Antennse five-thirds as long as head; segments 3-5 

 * It is possible that the anterior pair are the postocular bristles. 



1— Proc. Biol. Soc. Wash., Vol. XXV. 1912. (11) 



