PROC. ENTOMOL. SOC. WASH 81(4), 1979, pp. 650-652 RHIZOECUS MEALYBUGS OF TEXAS, WITH DESCRIPTION OF A NEW SPECIES (HOMOPTERA: PSEUDOCOCCIDAE) Edson J. Hambleton Cooperating Scientist, Systematic Entomology Laboratory, IIBIIL Agric. Res., Sci. and Educ. Admin., USDA, Beltsville, Maryland 20705 (mailing address: 5140 Worthington Drive, Washington, D.C. 20016). Abstract. — Rhizoecus brevirostris, a new species of mealybug, is de-scribed from Texas. Notes are given for six additional members of the ge-nus, three of which constitute new state records. This paper contains the description of a new rhizoecine mealybug and notes on six additional species from the state of Texas. Unless otherwise indicated, the mealybugs were collected by R. D. Gordon and D. R. Miller, Systematic Entomology Laboratory, IIBIIL U.S. Department of Agricul-ture in May 1976. I am indebted to Dr. Miller for the privilege of studying this collection and for the facilities afforded me during these studies. Rhizoecus apizacos Hambleton Collected on Boitteloua sp. (Gramineae) at Iron Mt. Ranch, 8 mi N Mar-athon, Brewster Co., May 12, 1976. Heretofore known only from Tlaxcala State, Mexico, this collection is a new record for the United States. Rhizoecus hicirculus McKenzie Several specimens collected from roots of Jatropha dioica (Euphorbi-aceae) at Black Gap Wildlife Management Area, Brewster Co., May 8, 1976. Previously described and recorded from several localities in California. Rhizoecus brevirostris Hambleton, NEW SPECIES Figs. 1-8 Adult female. — Elongate oval, much narrowed anteriorly. Length, 1.74 mm; width, 0.71 mm. Antennae short, 6-segmented, narrowly separated; length of segments in microns: I, 22; II, 14; III, 15; IV, 11; V, 10; VI, 28; apical segment almost 2x as long as wide, with 3 rather stout, weakly clavate sensory setae, and 1 spinelike sensory seta near apex; segment V with 1 short, stout sensory seta. Interantennal space equal to length of apical
BioStor
