. Bulletin. Natural history; Natural history. 48 Illinois Natural History Survkv Bullktin Vol. 26, Art. 1 1 <J. Rockton : Rock River. June 11. 1948, Burks. Stannard, & Smith, 1 6 â Wilming- ton : at lijjlit. Aujr. .?-4, 19.^7, Ross & Burks, 70 <J ; AuK'. 6, 1947. Burks 5c Samlcrson, ^ 6 . 3. 'I'ricorythudi's Pi-ridius new species This species agrees \\ ith utratiis in havinj:; the antennae almost completely white, in having: a subapical, retl-brown hand on each of the teniora, which are extensively shaded with black, and in having abdominal seji- ments 3-7 shaded with black only
. Bulletin. Natural history; Natural history. 48 Illinois Natural History Survkv Bullktin Vol. 26, Art. 1 1 <J. Rockton : Rock River. June 11. 1948, Burks. Stannard, & Smith, 1 6 â Wilming- ton : at lijjlit. Aujr. .?-4, 19.^7, Ross & Burks, 70 <J ; AuK'. 6, 1947. Burks 5c Samlcrson, ^ 6 . 3. 'I'ricorythudi's Pi-ridius new species This species agrees \\ ith utratiis in havinj:; the antennae almost completely white, in having: a subapical, retl-brown hand on each of the teniora, which are extensively shaded with black, and in having abdominal seji- ments 3-7 shaded with black only on the dorsal meson and at the posterolateral angles of the termites. 1 he two differ in that ptritlius is larger and fjenerally much li^rhter in color, with the vertex of the head mostly yellow instead of entirely black, as in atralus; in pcridius, also, the apical margin of the {jcnital forceps base has a relatively broad, shallow median excavation. Male.âLength of body mm., of fore wing mm. Head yellow-brown, shaded with black near posterior margin of vertex; eyes and ocelli black; antennae white, each usually shaded with tan and black on pedicel. Pronotum completely shaded with dark gray, mesonotum and metanotum brown, pleura slightly lighter brown, venter same color as mesonotum at lateral margins, color paling to white on meson; all coxae and trochanters dark brown; femora light brown, shaded with black, and with a subapical, red-brown band on each; fore tibia gray, middle and hind tibiae light yellow or white, with black shading in middle; fore tarsus light gray, middle and hind tarsi white; wings hyaline, veins Sc and R, shaded with gray, veins and crossveins in anterior half of each wing brown. Abdomen mostly light yellow or white, tergites 1 and 2 washed with gray. Tergites 3-7 shaded with gray on meson and at lateral margins, apical tergites uni- formly washed with gray; sternites faint gray-tan, often almost white; caudal fila- ments white, basal f
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
