Listropsoralges thylamys, Grootaert, Patrick, 2013

Grootaert, Patrick, 2013, Revision of the family Listropsoralgidae Fain, 1965 (Acariformes: Sarcoptoidea) - skin parasites of marsupials and rodents 3611, Zootaxa 3611 (1), pp. 1-69 : 24-25

Listropsoralges thylamys sp. n.

( Fig. 15 )

Description. MALE (holotype). Body 155 long and 120 wide. Gnathosoma . Ventral retrorse spurs of subcapitulum with 2 apices. Dorsum. Dorsal shields without ornamentation. Propodonotal shield 45 long. Setae si almost 8 times shorter than se. Hysteronotal shield 78 long. Setal alveoli c1 absent, setae cp distinctly thicker than c2 and c3, setae f2 slightly thickened. Setae e1 represented by microsetae. Posterior margin of hysteronotal shield widely concavated. Venter. Retrorse spur of coxal fields III distinct, rounded apically. Fleshly-like projections bearing setae h2 and h3 absent. Diameter of adanal suckers about 5. Opisthosomal lobes about 13 long. Maximum distance between opisthosomal lobes 25. Legs. Legs III about 80 long. Legs IV about 25 long. Lengths of setae: si 5, se 40, c2 11, d2 and e2 about 8, cp 40, c3 15, f2 9, h1, ps2, ps3, 4a, 4b and g— all 3–5, h2 90, h3 16, ps1 28, 1a and 3a 10, w1 I and II about 20, ω 3 I 25, φI and II about 33, φIII 12, φIV 18, σ 1 I 19, σII 9, and σIII 8.

FEMALE. Unknown.

Type material examined. Male holotype ( UMMZ BMOC 81-0128 - 002 ) from Thylamys venustus ( UMMZ 156021 ) [posterior lateral body], BOLIVIA: Tarija, 4 km North (by road) Cuyambuya, Fabrica de Papel , 980 m, 7 January 1980, coll. G.K. Creighton.

Holotype deposition. Holotype is deposited in UMMZ .

Etymology. The species name is derived from the generic name of the host and is a noun in apposition.

Differential diagnosis. This new species differs from Listropsoralges caluromys by a few following features. In males of Listropsoralges thylamys sp. n., the body length is 155 (vs. 200–210 in L. caluromys ), setae cp are 40 long (vs. 20–22 in L. caluromys ) and 3.6 times longer than c2 (vs. 1.1 in L. caluromys ).

Host range and distribution. This species is only known from the type host, Thylamys venustus from Bolivia (present paper) .

Figures

FIGURE 15. Listropsoralges thylamys sp. n., male: A—dorsal view; B—ventral view; C—tarsus and tibia III in ventral view; D—same, IV. Scale bars: A, B = 50 µm, C, D = 25 µm.