empodium

empodium

[em′pōd·ē·əm]
(invertebrate zoology)
A small peripheral part located between the claws of the tarsi of many insects and arachnids.
References in periodicals archive ?
nov.: (1) Male head (frontal view); (2) Fifth flagellomere of female; (3) Last flagellomere of male; (4) Fifth flagellomere of female; (5) Palpus (frontal view); (6) Wing; (7) Male tarsal claw and empodium.
Empodium between tarsal claws large ................................................................................
Otras caracteristicas diagnosticas de los adultos fueron detalladas por WILCOX & PAPAVERO (1971) y GONZALEZ & CARREJO (1992) y son como sigue: vertex de la cabeza ligeramente o profundamente hendido; area ocular con uno o ningun ocelli palpos vestigiales; vena alar M1 curvada hacia el margen costal y la celda anal (cup) mas larga que la segunda celda basal (bm) (Figura 1); empodium ausente o como cerda.
Legs (Figure 1(g)) cream-colored; coxae with diffuse, light brown marks anterolaterally; trochanter, femur with dark brown, longitudinal stripes anterodorsally, posterodorsally, with dark vertical stripe at tip of segment; tibia with dark brown vertical stripe basally, short, diffuse, light brown, longitudinal marks anterobasally, posterobasally; tarsus, claw, empodium dark brown.
Leg: Light brown, setation predominantly white; pro, mes, and met coxa lightly grey pubescent, long white setose; met trochanter setose medially; femur light brown, met femur more-or-less cylindrical only slightly wider than pro and mes femur, in distal half without ventral macrosetae, posteroventrally long white, erect setose and setae arranged in distinct row; pro, mes, and met tibia straight, met tibia cylindrical, ventral keel absent, lateroposteriorly long white, erect setose and setae arranged in distinct row; pro and mes tarsomere 1 longer than tarsomere 2, but less than combined length of tarsomeres 2-3, met tarsomere 1 as long as combined length of tarsomeres 2-3; pulvillus well-developed, as long as well-developed claw, and as wide as base of claw; empodium absent.
Chalazal haustoria are recorded in Anthericum (Schnarf, 1928), Curculigo (Schlimbach, 1924), Cyanella (De Vos, 1950), and Empodium (De Vos, 1949).
Thorax: scutum with setae of the 2 central rows in sparse files, lateral rows present in 2-3 files and continuous along most of scutal length, scutum otherwise nearly entirely covered with scales except for midline posteriorly and 2 narrow mediolateral lines; scutellum with single irregular horizontal row of setae, otherwise covered with scales;, anepimeron with 07-09 setae, pleura otherwise without vestiture; wing: length (from arculus to apex): 1.0-1.1 mm (n=9); tarsal claws bowed beyond midlength, and toothed; empodium reaching bend in claws (Figure 3).
Tarsi I-III terminated with 2 claws and claw-like empodium. Anterior claw sickle-like, ciliated, posterior claw composed of 2 branches: one similar to anterior claw but shorter and another one terminated with discoid, pulvilliform structure.
Tarsomere 5 unmodified, truncate apically, bearing short claws and pad-like pulvilli; empodium with pubescent ventral face.