Phthiracarus paracrispus, Niedbała & Starý, 2016

Phthiracarus paracrispus View in CoL n. sp.

( Figures 3 View FIGURE )

Description

Measurements of holotype — Prodorsum: length 283, width 202, height 101; prodorsal setae: sensillus ( ss) 66, interlamellar ( in) 126, lamellar ( le) 101, rostral ( ro) 68, exobothridial ( ex) 58; notogaster: length 581, width 379, heigh 328; notogastral setae: c 1 152, c 1 / c 1 - d 1 =1.1, h 1 and ps 1 94.

Species of medium size; colour greyish.

Prodorsum — with median and lateral fields distinct long and narrow. Lateral carinae long, exceeds the sinus. Posterior furrows not visible. Sensilli ( ss) long, thin, smooth, enlarged in their proximal third and ending in a point. Interlamellar ( in) and lamellar ( le) setae fine, smooth, semi-erect; rostral setae ( ro) curved and directed downwards; exobothridial setae ( ex) rather long, almost as long as ss and ro; relative length of prodorsal setae in > le > ro = ss > ex.

Notogaster — with fine, rather long notogastral setae ( c 1 > c 1 - d 1); setae c 1 and c 3 slightly remote from anterior notogastral margin, setae c 2 far from the margin. Vestigial notogastral setae f 1 located posteriorly of h 1 setae; two pairs of lyrifissures ia and im present.

Ventral region — Setae h of subcapitular mentum shorter than distance between them. Genitoaggenital plate with 9 genital setae with formula: 7(4+3): 2. Anoadanal plates with five pairs of welldeveloped setae; anal setae considerably longer than adanal setae, adanal setae ad 1 and ad 3 short, ad 2 minute.

Legs — Chaetome of legs complete; setae d of femora I thin, remote from distal end of article.

Material examined — Holotype is deposited at DATE from locus typicus: Madagascar, Ankarafantsika National Park, 23. IV. 2011, lowland forest, latitude 16°18’05,9" S, longitude 46°49’06,4" E, altitude 71 m, sifted sample of forest litter, Winkler apparatus extraction, leg. L. S. Rahanitriniaina and R. Raveloson; GoogleMaps

Etymology — The prefix para is Latin meaning "near" and refers to the similarity of the new species with P. crispus Hammer, 1972 .

Comparison — The new species is similar to P. crispus Hammer, 1972 in the characters of prodorsum, especially in the shape of sensilli. It is distinguishable by longer notogastral setae c 1; c 1 > c 1 - d 1, (versus c 1 < c 1 - d 1); notogastral setae c 1 and c 3 slightly remote from anterior margin, setae c 2 far from margin (versus c 3 almost near margin and c 1 and c 2 slightly remote from margin); vestigial notogastral setae f 1 located posterior of h 1 (versus anterior of h 1); setae h of subcapitular mentum shorter than distance between them (versus, longer of distance); formula of genital setae 7(4+3): 2, versus: 7(4+2): 3; adanal setae ad 2 minute (versus ad 2 rather long, similar in the length to other adanal setae); chaetome of legs complete (versus chaetome of legs incomplete) ( Hammer 1972).