. Bulletin. Natural history; Natural history. 394 Natiirai. IlisTciKv SuRVKv Bulletin Vol. 29, Art. 4 striations, without extremely long se- tae. Mesopraesternum completely sep- arated by a suture from the meso- sternum. Fore femora enlarged. Fore wings of even width throughout, with- out accessory fringe cilia. Pelta small, bell shaped. Wing- holding setae relatively slender, sig- moidal. Abdominal tergite II at the extreme sides fractured into small stipple-like platelets. Abdominal ter- gite IX with major posterior setae much longer than tube. Tube shorter than head, about as long
. Bulletin. Natural history; Natural history. 394 Natiirai. IlisTciKv SuRVKv Bulletin Vol. 29, Art. 4 striations, without extremely long se- tae. Mesopraesternum completely sep- arated by a suture from the meso- sternum. Fore femora enlarged. Fore wings of even width throughout, with- out accessory fringe cilia. Pelta small, bell shaped. Wing- holding setae relatively slender, sig- moidal. Abdominal tergite II at the extreme sides fractured into small stipple-like platelets. Abdominal ter- gite IX with major posterior setae much longer than tube. Tube shorter than head, about as long as prothorax; terminal setae shorter than tube. The asymmetrical form of antennal segments I and II is diagnostic. Aside from the characteristics of the antennae, which may or may not be only of specific value, this genus dif- fers from Hoplotkrips by the features of the two pairs of well-developed epimeral setae and the presence of lightly marked, longitudinal striations on the metascutum. Members of Hoplotkrips have only one pair of well- developed epimeral setae and the met- ascutum is almost entirely smooth. Phrasterothrips, an American genus which frequently is distinguished by the presence of two pairs of epimeral setae, differs from Acrosothrips by having the epimeral sutures incom- plete, having the midlateral setae nearer the anterolateral setae on the prothorax, and having accessory cilia on the fore wings. Acrosothrips asymmetricus (Watson) Trichothrips asymmetricus Watson (1937a:8). 9 , d', larva. Type-locali- ty.—Birmingham, Alabama. Trans- ferred to Acrosothrips by Stannard (19636). Female (macropterous).—Length about 2 mm. Color brown. Antennal segments I and II light brown be- coming light yellow at apexes. Inner surfaces of legs and all tarsi yellowish brown to yellow. All body setae pale yellow. Wings colorless except light brown at extreme base of each fore wing. Head as in Fig. 206. Postocular se- tae long and blunt. Ocellar setae minute. Antennal segmen
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
