ocellus

We used the abbreviations F, S, T, OD, and PW for antennal flagellomere, metasomal sternum and tergum, ocellar diameter and puncture width, respectively.

Ocelli enlarged, separated from eyes by less than an ocellar diameter (Fig.

It is a member of the Megalurothrips genus-group with the following characters in common: Antennae 8-segmented, ocellar setae pair I present, median metanotal setae at anterior margin, metanotal spinula absent, abdominal tergite VIII with posteromarginal comb usually interrupted, sternal discal setae absent (Mound and Palmer, 1981).

Eye bare; arista bare; ocellar seta proclinate, short or weak; outer vertical seta reduced, indistinguishable from postocular seta; frontal setae descending to level of upper third of parafacial, flanked by irregular row of shorter setae; fronto-orbital plate with short and thin setulae from vertex level to lowermost frontal seta; one reclinate orbital seta; proclinate orbital seta absent; parafacial bare except for a few hairs below lowest frontal seta; arista tapering smoothly to apex; first aristomere short; second aristomere slightly longer than wide; vibrissa stout, inserted above level of lower facial margin; palpus clavate, slightly bowed on apical third and slightly longer than prementum; lower facial margin slightly projected; genal dilation covered with thin black setulae.

The following setae were found: a pair of posterior setae P1 and P2 alongside the epicranial sulcus; a pair of F1 setae on the forehead; 2 pairs of setae AF1 and AF2 on the adfrontal sclerite; a pair of setae C1 and C2 on the clipeus; anterior setae A1, A2, and A3 on the lower side of the head, along with a lateral seta L1 and 3 ocellar setae.

Some web-building spiders, including those in the genus Storena, even have underfocused and therefore only crudely image-forming eyes (Land, 1985), reminiscent of the optics of the dorsal ocellar system in some insects (Goodman, 1981).

Head higher than wide in frontal view, in lateral view eyes occupying more than half of the top of the head, crest and ocellar tubercle well developed (Fig.

Abbreviations are as follows: OOL, ocellar-ocular distance; POL, post-ocellar distance; OL, ocellar line; OPL, ocellar-occiptal line; Rs, radial vein.

Face, frons and vertex dull gold pruinose, mystax orange-yellow, ocellar macrosetae orange-brown.

quimbaya is easily differentiated from the female of Batrachophthalmum rufiventre, by having ocellar seta reduced; orbital seta present; lateral vertical seta reduced, almost indistinguishable from setulae around it; one dorsocentral seta; wing with wide and discontinuous median band; abdomen and legs brown, except mid tarsomeres and apical half of hind tibia yellow and hind tarsomeres whitish.

DESCRIPTION: Head: Clypeus (tylus) unarmed, apically globose, weakly raised, extending anteriorly to and laterally weakly higher than juga; juga unarmed; antennal segment I stout, thickest, slightly curved outward, attenuated at base, and shorter than maximum length of head; segments II and III slender, cylindrical, and IV fusiform and barely thickened; each antennal segment clothed with scattered, short, semidecument, silver, bristle-like setae; antennal segments I to III densely tuberculate; ocellar tubercle barely raised; postocular tubercle protuberant; labial segment I short, reaching posterior half of head.