Homosemion Annecke 1967:156-157. Type species: Homosemion bennetti Annecke, by original designation and monotypy.
Female. Overall length about 1.0- 1.9mm.
Body not dorsoventrally flattened; fore wing generally infuscate with base, a small area below parastigma, area at apex of venation and apex hyaline, area near anal angle usually partially hyaline, main infuscate area not apically enclosed by a curved darker band; apex of postmarginal vein and stigmal vein connected by a hyaline streak.
Frontovertex less than 0.15X head width, with shallow, inconspicuous piliferous punctures; scrobal area delimited dorsally by a continuous frontofacial ridge above which is a shallow, smooth and shiny transverse depression that contains a transverse band of silvery setae that are more dense below eye; ocellar area with very shallow, indistinct polygonally reticulate sculpture, frontovertex elsewhere smooth but not shiny; each scrobal depression delimited dorsally by frontofacial ridge; mandible tridentate with two lower teeth acute and a slightly rounded truncate upper tooth; palp formula 4-3; antenna inserted near mouth; scape strongly broadened and flattened, subtrapezoidal, lamina apically rounded; upper margin of scape broadened but not overhanging the basal part of the flagellum; apically quite smooth not very shiny and not flattened; pedicel very nearly as wide as F1, subtriangular in profile, dorsal margin rounded; flagellum flattened from side to side, F1- F3 gradually increasing in width, F3-F6 hardly increasing in width, subequal in width, produced subequally dorsally and ventrally, much wider than long; clava 3-segmented, sutures entire, oblique, sensory area very enlarged giving apex a strong obliquely truncate appearance;
Mesoscutum with notaular lines sometimes visible anteriorly; fore wing with marginal vein about 4X as long as broad, about 2X as long as stigmal vein; postmarginal vein a little less than half as long as stigmal; submarginal vein with parastigma slightly widened and slightly downcurved; basal cell largely naked and with a smaller naked area below parastigma which is open ventrally; linea calva entire; filum spinosum present, represented by about 5 modified setae.
Gaster with hypopygium transverse, about 2.5X as broad as long, anteriorly bilaterally concave, posteriorly with a shallow to moderate median invagination; ovipositor at least 1.4X as long as mid tibia and quite strongly exserted; gonostylus free; paratergites absent.
Male. Unknown.
DISTRIBUTION. Southern Caribbean and Costa Rica.
HOSTS. Primary parasitoids of Crypticerya Cockerell (Hemiptera: Monophlebidae).
BIOCONTROL. Homosemion bennetti has been introduced into Barbados (see below).
COMMENTS. See comments under Ammonoencyrtus (p. 519) and Iceromyia (p. 496).
IDENTIFICATION. Only one species known, see Annecke (1967).