. Bulletin. Natural history; Natural history. 504 Illinois Natural History Slrvev Vol. 29, Art. 4. Fig. 279. prothorax. -Sophiothrips bicolor, head and Prothorax enlarged, often longer than pterothorax, sometimes hexag- onally reticulate. Frequently a single pair of epimeral setae the only setae well developed. Epimeral sutures com- plete. Praepectus (Fig. 147) present. Macropterous, brachypterous, and ap- terous. Mesopraesternum degenerate. Metafurcae well separated from or close to mesofurcae depending on form. Fore wings with sides parallel, not in- dented in the middle, without
. Bulletin. Natural history; Natural history. 504 Illinois Natural History Slrvev Vol. 29, Art. 4. Fig. 279. prothorax. -Sophiothrips bicolor, head and Prothorax enlarged, often longer than pterothorax, sometimes hexag- onally reticulate. Frequently a single pair of epimeral setae the only setae well developed. Epimeral sutures com- plete. Praepectus (Fig. 147) present. Macropterous, brachypterous, and ap- terous. Mesopraesternum degenerate. Metafurcae well separated from or close to mesofurcae depending on form. Fore wings with sides parallel, not in- dented in the middle, without acces- sory cilia. Pelta (Fig. 166 and 167) broad, never with posterior margin fractured into platelets. Abdominal tergites with or without wing-holding setae. In ap- terous male and female lateral major posterior setae on abdominal tergite IX shortened; in macropterous fe- males, at least, these lateral setae much larger. Tube frequently longer than head, terminal setae shorter than tube. Sophiothrips may be distinguished from those entities in which the max- illary stylets are confined to the mouth cone and rarely enter the head by the combination of the eight-segmented antennae in which segment III is as long as II and segment VI is the longest, the enlarged prothorax, and the entire pelta which is not fractured into platelets posteriorly as in Zaxetio- thrips and Williamsiella. So far representatives of this genus have not been found in Illinois. Four species, some collected only once, are known from the United States around the gulf coast region. If any of these species do occur in Illinois, most likely they would be in the southern cypress and yellow pine section of our state. KEY TO SPECIES (of United States, as based on literature) 1. Tube longer than head; one collection from northern Florida spadix Hood Tube shorter than head 2 2. Femora entirely dark brown; one collec- tion from southern Florida vorticosus Hood Femora dark brown tipped with yellow 3 3. Prothoracic an
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
