pulvillus

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pulvillus

(pŭl-vĭl′əs)
n. pl. pul·villi (-vĭl′ī′)
A soft, cushionlike pad on the foot of an insect, such as the housefly, by which it clings to a surface.

pulvillus

a cushion or pad between the claws on an insect foot.
References in periodicals archive ?
Allacta can be distinguished from Sundablatta (front femur Type C) by front femur Type [B.sub.2] or [B.sub.3], from Pseudophyllodromia (the front and mid tarsi with pulvilli on the 4 proximal tarsomeres, hind tarsus with a pulvillus only on the fourth tarsomere) by pulvilli present only on the fourth tarsomere of all legs.
lamellata only) but half as long, and pulvilli are diminutive, about 1/4 length of the claws.
14 Cell [m.sub.3] open; vein [R.sub.4] usually with basal stump-vein; pulvilli poorly developed, but clearly discernable; hypandrium somewhat flat or only gently concave Acnephalomyia Londt, 2010 (7 spp., Londt 2010c)
DIAGNOSIS: Easily recognized by the concave head, short appressed shining pubescence on dorsum, a dark spot at each apex of the embolium and cuneus in all Nepalese species, greatly enlarged metafemur, the large pulvilli covering almost the entire interior surface of the claws, splayed out left paramere (Fig.
9-10): claws strongly curved just beyond midlength, with basal tooth on fore- and midlegs, without tooth on hindlegs; empodia reaching curve of claws; pulvilli short, about 1/4 length of claws.
Among other South African phyline genera, Schuhistes is most similar to Karoocapsus Schuh in its dark coloration with contrasting colored maculae, and similarly small, unelaborated, and slender endosoma; Schuhistes can be distinguished from Karoocapsus by its possession of simple and thickened setae on the head, thorax and hemelytra, the relatively large pulvilli, and the host plants (i.e., Lycium spp.).
Fore tarsomeres slightly thickened, with ventral pad of short white hairs, [It.sub.4-5] with longer dorsal setae at apex, It5 with enlarged pulvilli and claws absent (MSSC); pulvilli and claws of mid and hind legs unmodified.
Legs: Entirely black; fore tibia with 2 medial p; mid femur without distinct av rows, with row of seta-like a, complete row of pv, becoming shorter apically; mid tibia with 1 ad, 2 p, row of short and seta-like pd and 2 strong pv; mid tarsomere 1 with row of long pd, slightly longer than its diameter; hind femur with complete row of av, becoming shorter apically, only with pv on distal part; hind tibia with 7 av (3 short basally), row of ad (2-3 strong), row of pd (2 developed), and 6-7 pv on basal 3/5; all tarsi shorter than tibiae, claws and pulvilli large.
SE, F, 7D, 9C): parempodia setiform, pulvilli relatively large, attached to most of ventral suface of claws: claws ventrolaterally with from one to six ventrally directed hairs (Figs.
Tarsomere 5 unmodified, truncate apically, bearing short claws and pad-like pulvilli; empodium with pubescent ventral face.
The pulvilli of Nycteribiidae and Strebilidae (Figs 44, 46) are composed of long narrow, closely-packed linear structures; in Nycteribiidae apically-expanded and in Strebilidae forming a mat of "hairs".
Thorax: Anatergites bare; metepisternal macrosetae present; postmetacoxal area membranous; pulvilli well developed; wing with cells r1 and m3 open at margin; costal vein extending around entire wing margin (although weakly around anal cell and alula); 'stump-vein' at base of R4 absent.