Pedrocortesella callitarsus Hunt 1996, n.sp.
Creators: name: Hunt, Glenn S.
Publisher: name: Zenodo
Year: 1996
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Licnodamaeidae
Pedrocortesella
Pedrocortesella callitarsus

description: <i>Pedrocortesella callitarsus</i> n.sp. Figs 4 D-E, 14, 15 Type material. South Australia: HOLOTYPE adult, ANIC, 8 km W. of Renmark, 34°13'S 140°41'E, berlese extraction Mallee litter, ANIC berlesate no. 251, I.C. Taplin, 14 May 1970. PARATYPE adults. ANIC, same data as holotype, 3 adults; AM KS43678, same data, 2 adults; SAMA, same data, 2 adults; AM KS46536, SEM stub no. <i>S/211</i> (ill.), same data, 3 adults (plus 1 non-type nymph); AM KS46537 SEM stub no. <i>S/218</i> (ill.), same data, 3 adults; FMNH, same data, 1 adult; CNC, same data, 1 adult. Other material examined. South Australia: AM KS46538, SEM stub no. <i>S/224,</i> 3.6 km E. of Monash, 34°14'S 140°33'E berlese extraction Mallee litter, ANIC berlesate no. 250, I.C. Taplin, 12 May 1970, 1 adult; AM KS46560 SEM stub no. <i>S/217,</i> 6.4 km E. of Paruna, 34°43'S 140°48'E berlese extraction of Mallee litter, ANIC berlesate no. 240, R.W. Taylor, 8 February 1970, 1 adult; ANIC, Parachilna Gorge, Flinders Ranges, 10 km E. of Parachilna, 31°08'S 138°25'E ANIC berlesate 740,leaf litter at base of <i>Eucalyptus camaldulensis,</i> A. Calder, 3 Sept. 1981, 6 adults. Diagnosis. Body medium-large, length about 550 -700 /lm; scalps rarely (if at all) carried by adult; sensillus with long flattened tuberculate blade; notogaster reticulatealveolate around margins, punctate centrally; 5 pairs of notogastral setae, genitoanal chaetotaxy 7:1:2:3, genital setae essentially in straight file, level of insertion of seta <i>ad3</i> adjacent to posterior half of anal valve; claw stalk very short. Description ADULT: <i>Body:</i> brown; length <i>(/lm)</i> 580, 610, 620, 670. <i>Cerotegument:</i> body generally with thin veneer of cerotegument; raised areas on body highlighted by a low encrustation of cerotegument (Fig. 14D). Setae <i>ro</i> and <i>le</i> and notogastral setae with ribbed accretion of cerotegument near base, though not as marked as <i>P hangayi.</i> Legs with cerotegument capping surface sculpturing, setae with striking ribbed accretions. <i>Prodorsum:</i> integument reticulate-foveolate at rostrum but tends to be punctate more posteriorly; no carina between <i>le</i> and <i>ro; le</i> dorsolateral, distance between them about 0.7 distance between <i>ro, ro</i> ventrolateral. Pedotectal tooth similar to <i>P propinqua.</i> Bothridium abutting notogaster but not closely adpressed (Fig. 14F), wall subcircular and depressed anterolaterally, posterolateral carina weak, situated close to notogaster; sensillus length about 0.8 interbothridial distance, with long flattened tuberculate blade (Fig. 14G), posterior margin of prodorsum forming a smooth arc between bothridia. <i>in</i> small, set&gt;0.5&lt;1.0 bothridial diameter from bothridial wall, near edge of dorsosejugal furrow, spiniform but almost entirely encased in cerotegument (Fig. 14F,G). <i>Exuvial scalps:</i> none seen. <i>Notogaster:</i> oval, length:width 400:320; 440:330; 440:330; 450:330. Intramarginal depression oval. Notogaster with median groove anteriorly; reticulate-alveolate around margins but punctate centrally (Fig. 14B,D); posterior margin slightly invaginate when viewed from above, without a carina between setae <i>pi</i> when viewed posteriorly (Fig. 14C). Fissura <i>ia</i> and <i>im</i> oblique and <i>ip</i> oblique-perpendicular to sagittal plane; 5 pairs of medium lengthed notogastral setae arising from large pits; <i>hi</i> widely separated, each located just inside posterior margin; <i>pi</i> inserted midheight on posterior flank, slightly further apart than <i>hi; lpx, p2x</i> and <i>p3x</i> arise just inside posterolateral flank, their insertions easily visible from above, <i>lpx</i> closest to fissura <i>ip,</i> inserted just posterior to it (Fig. 14B). <i>Gnathosoma:</i> rutella basally with strong concave flexure and weak lateral buttressing, transverse striations present (Fig. 15B,C). Pedipalp not studied. <i>Epimeral region:</i> strongly convex immediately anterior to genital valves, tending to overhang them. <i>Genitoanal region:</i> separation of anal and genital vestibules relatively narrow with deep transverse grooves and a narrow isthmus between the vestibules (Fig. 15A). Ventral plate punctate. Genitoanal chaetotaxy 7:1:2:3; genital setae essentially in straight file, <i>gI</i> slightly longer than other setae, inserted slightly behind anterior corner in marginal notch; g5 situated at about 0.5 valve length, g7 inserted well anterior to inner posterior corner, not in marginal notch; setae <i>ag</i> inserted at level posterior to <i>g6;</i> setae <i>adI</i> distinctly postanal, <i>ad3</i> level with posterior half of anal valve; <i>adI- 3</i> inserted in large pits. <i>Legs.</i> Distal apophysis of tibia overlaps about 30% of tarsus (Fig. 4D). Tarsal cluster of leg I placed distodorsally on apophysis, almost cerotegument, enclosed in a rim closely abutting rim for <i>omega</i> land 2 and sharing a common wall; <i>fi"</i> longer than solenidia; tarsus lacking distal recess for receiving retracted unguinal complex, stalk very short. Etymology. The specific epithet means "beautiful tarsus". Distribution. South Australia.
description: Published as part of <i>Hunt, Glenn S., 1996, A review of the genus Hexachaetoniella Paschoal in Australia (Acarina: Cryptostigmata: Pedrocortesellidae), pp. 223-286 in Records of the Australian Museum 48 (3)</i> on pages 242-246, DOI: 10.3853/j.0067-1975.48.1996.431, http://zenodo.org/record/4654998