A revision of the New World genus Aptilotella Duda (Sphaeroceridae: Limosininae) Author Luk, Stephen P. L. luk@uoguelph.ca Author Marshall, Stephen A. luk@uoguelph.ca text Zootaxa 2014 2014-02-05 3761 1 1 156 journal article 5940 10.11646/zootaxa.3761.1.1 5444e27e-3e2a-429b-931b-823a2086e3c5 1175-5326 4909057 82E0F1DC-BC98-4E8A-A3D5-21ECB392CC0B Aptilotella corona Luk & Marshall , sp. n. Figures 31–33 , and 187–198 Description. Habitus as in Figures 31 and 32 . Body length 1.5–1.7 mm . Head ( Fig. 198 ) ground color yelloworange. Frons finely rugose; pale areas silvery; dark brown medial stripes each about one-fourth the width of frons, outer border orange; dark brown orbital stripes each half the width of medial stripe, continuing into ocular emargination. Ocellar tubercle slightly raised; ocelli present; ocellar bristle two-fifths the length of frons. Orbital bristle present; orbital setulae minute, in three pairs. Interfrontal setae yellow, in two pairs. Face shining; facial excavation with a pair of elliptical silver spots, smaller in females; clypeus brown; gena weakly shining, dark brown except along ocular margin, which is silvery in its posterior half. Antenna orange. Scutum and scutellum reddish-brown, shining. Scutum uniformly setose. Scutellum darker, bare; flat, twice wider than long, 0.6 times the width of scutum. Scutellar bristles subequal in length. Pleuron reddish-brown. Legs dark reddish-brown; front tibia orange; tarsi paler; mid tibia with two anterodorsal and one distal posterodorsal bristle. Male mid leg modified: mid femur ventrobasally with a row of stout setae; tibia apicoventrally with a stout, peg-like seta. Wing rudiment brown. Abdomen black, shining; tergites each with two rows of yellow setae; sternites and epandrium finely microtrichose. Epandrium and synsternite 6+7 dark reddish-brown; cercus and surstylus yellow. Male terminalia. Sternite 5 ( Figs. 33 , 190 ) irregularly emarginate in posteromedial third; margins bulging and bearing five claw-like setae in two rows, flanked by long and short setae. Synsternite 6+7 as in Figure 189 . Tab-like piece ( Figs. 33 , 189 ) very dark and two-pronged, consisting of two diverging flukes rising medially from a subpentagonal, scalloped plate. Cercus ( Figs. 33 , 187, 188 ) 2.5 times as long as basal width; interior and exterior margin of base excavated; outer margin medially with a seta about half as long as the cercus; apical third bearing four sensory setae. Surstylus ( Figs. 33 , 187, 188 ) lunate; outer face anteriorly expanded into a convex, rounded rectangular plate; lower half setose. Postgonite ( Figs. 33 , 192 ) curved; descending arm straight, gradually tapering, basally with three sensory setae; articulatory process for pregonite undeveloped, obtuse; articulatory process for basiphallus short-stalked, knobbed with anterior bump. Hypandrium ( Fig. 192 ) with medial rod straight and apically rounded; posteromedial fork narrow and divergent; hypandrial arms oblong, the left arm broader; pregonite clavate, two-thirds length of hypandrial arm. Aedeagus as in Figure 191 . Basiphallus compressed, strongly arched, flared at articulation with distiphallus; articulatory process for postgonite spatulate and erect. Ventrobasal sclerite divided. Lateral flanking sclerites broadly fused ventrobasally; dorsal margins widely spaced, meeting only in basal fifth. Ventral flanking sclerites with a hatchet-shaped and heavily sclerotized club-shaped sclerite, wearing a suspended crown of strong denticles; the triangular medial article bearing a prominent dorsal arm which narrows in the apical third; the membranous distal article broad, distally curling in on itself, interior margin projected into a triangular ascending lobe. Medial paired sclerites originating distally to the bend of the club-shaped sclerite, slender portion convergent and ascending, with a ventral preapical dilation. Female terminalia. Epiproct apparently absent. Each half of tergite 8 ( Figs. 194, 195 ) rectangular, weakly convex; margin creased to align tightly dorsally; setose. Tergite 7 ( Fig. 194 ) less sclerotized in posteromedial third, resulting in a paler, medially pointed, lunate area. Cercus 2.5 times as long as wide; with one long apical seta and several scattered setae. Hypoproct ( Figs. 195, 196 ) indistinct with faint parenthesis-shaped margin; medially with two discs, each densely microtrichose and with two setae. Spermathecae ( Fig. 197 ) simple; length of sclerotized ducts less than twice the diameter of a spermatheca. Variation . One aberrant specimen has two orbital bristles on one side of the frons. The mid femur is orange in some specimens. Teneral specimens have a uniformly brown body. Etymology. The species epithet describes the “crown-of-thorns” on the club-shaped sclerite of the distiphallus. Type material. Holotype ♂ , DEBU . GUATEMALA : 7 km N San Lorenzo , 2000 m , 10–17.vi.1993 , dung, B.D. Gill. Paratypes . GUATEMALA : Zacapa , 5 mi N San Lorenzo , 13.vii.1986 , flight intercept trap , J.M. Campbell ( ♀ , DEBU ) ; 5 mi W, 18.vii.1986 , sifted piles of pine, J.M. Campbell ( ♀ , DEBU ) ; same label as holotype ( 14♂ , 22♀ , DEBU ; 4♂ , 4♀ , UVGC ) ; Cerro de los Monos , 15°6’48”N , 89°40’41”W , 2284 m , 6.vii.2007 , mixed oak-cloud forest, ex. sifted leaf litter, R.S. Anderson ( ♀ , DEBU ) . Comments . Aptilotella corona is a readily recognizable member of the A. corona species group, with a reddish-brown thorax and a pair of elliptical silver spots on the facial excavation. The distiphallus is equally distinctive due to the crown of large denticles on the club-shaped sclerite.