Lamellodectes distinctus, Hernandes, Fabio A. & Valim, Michel P., 2014

Hernandes, Fabio A. & Valim, Michel P., 2014, On the identity of two species of Proctophyllodidae (Acari: Astigmata: Analgoidea) described by Herbert F. Berla in Brazil, with a description of Lamellodectes gen. nov. and a new species, Zootaxa 3794 (1), pp. 179-200 : 186-190

publication ID

https://dx.doi.org/10.11646/zootaxa.3794.1.8

publication LSID

lsid:zoobank.org:pub:194B9A55-0C1D-44EB-B797-D4BF1507950D

DOI

https://doi.org/10.5281/zenodo.6124731

persistent identifier

https://treatment.plazi.org/id/03D487A4-7226-FFC2-53E6-FE7BFB5CFEAD

treatment provided by

Plazi

scientific name

Lamellodectes distinctus
status

sp. nov.

Lamellodectes distinctus sp. nov.

( Figs. 4–6 View FIGURE 4 View FIGURE 5 View FIGURE 6 , 10 View FIGURE 10 B)

Proterothrix s.l. sp., ex Conopophaga lineata , in Kanegae et al. (2008: 33)

Description. MALE (holotype). Idiosoma, length × width, 260 (256–266 in 7 paratypes) × 110 (108–118). Prodorsal shield: lateral margins with incisions at level of scapular setae, posterior margin slightly convex medially, total length of shield along midline 90 (87–91), width 83 (78–84), surface with circular lacunae except in anterior area, these lacunae slightly larger in posterior third than in middle part; scapular setae se 82 (97) in length, their bases separated by 48 (44–48), setae si separated by 41 (36–40) ( Fig. 4 View FIGURE 4 A). Setae cp situated ventrally on soft tegument. Setae c 2 situated dorsally on anterior margins of humeral shields. Subhumeral setae c 3 lanceolate, 21 (19–21) × 6 (5–6). Hysteronotal shield: greatest length 157 (151–158), width in anterior region 75 (72–77), anterior margin slightly concave, surface with numerous circular lacunae and with a distinctly darker patch centrally that is less conspicuous in some specimens. Distance between prodorsal and hysteronotal shields 8 (8–13). Opisthosomal lobes short, their posterior margins rounded. Supranal concavity present ( Fig. 4 View FIGURE 4 A). Setae h 1 situated at midlevel of supranal concavity. Lamellae triangular in shape, length 15 (13–14), width at base 8 (8–10). Setae h 3 represented by macrosetae, 98 (81–95) long, setae ps 2 30 (23–32) long; setae f 2 present; setae h 2 105 (91–111) long; setae ps 1 minute, about 5 long, situated near inner margins of lamellae. Distance between dorsal setae: c 1:d 1 37 (32–37), d 1:d 2 26 (23–32), d 2:e 1 22 (24–28), e 1:h 1 33 (29–37), h 1:h 1 47 (48–52), h 3:h 3 27 (31–37).

Epimerites I fused into a thick Y with almost right-angled arms, area between free branches sclerotized ( Fig. 4 View FIGURE 4 B), with posterior tips not connected to epimerites II. Coxal fields I and II without large sclerotized areas. Rudimentary sclerite rEpIIa absent. Epimerites IVa present, short. Aedeagus length (from anterior bend to apex) 51 (48–54), genital arch length 10 (7–11), width 22 (19–25). Adanal suckers 12 (11–15) in diameter, corolla with indentations, distance between centers of discs 21 (21–26). Setae ps 3 8 (7–10) long. Distance between ventral setae: 3 a: 4a 26 (25–32), 4 a:g 32 (30–33), g:ps 3 18 (17–19), ps 3:ps 3 14 (13–16).

Femora I, II without crests. Solenidion σ 1 of genu I 10 (8–10) in length, situated at midlength of segment. Genual seta cG I and II setiform, mG I and II slightly thicker basally with filiform apex ( Figs. 4 View FIGURE 4 A, B). Length of solenidia: ω 1 of tarsus I 13 (12–14), ω 1 of tarsus II 14 (14–16), ω 3 of tarsus I 27 (27–30). Legs III and IV similar in form and size. Tarsus IV 29 (29–32) long; setae d and e button-like ( Fig. 5 View FIGURE 5 D).

FEMALE (1 paratype). Idiosoma, length × width, 401 × 145. Prodorsal shield: 102 × 126, lateral margins moderately curved at level of scapular setae, posterior margins slightly convex medially, surface with lacunae as in male, setae se 102 long, separated by 73, si separated by 61. Scapular shields present. Setae cp situated ventrally, on humeral shield. Setae c 2 situated dorsally on anterior margins of humeral shields. Setae c 3 lanceolate, 24 × 7. Distance between prodorsal and hysteronotal shields 7. Anterior hysteronotal shield roughly rectangular, greatest length 202, width at anterior margin 113, surface covered with numerours circular lacunae ( Fig. 6 View FIGURE 6 A). Length of lobar region 89, greatest width 105. Terminal cleft as an inverted U with divergent arms, 63 long. Setae h 1 on lobar shield. Hysterosomal setae f 2 present. Setae h 2 blade-like with apical filament, total length 84, width of enlarged part 6. Setae ps 1 situated on opisthosomal lobes dorsally, near inner margins of lobes, approximately at midlevel of terminal cleft. Setae h 3 setiform, 64 long. Distance between dorsal setae: c 1:d 1 52, d 1:d 2 48, d 2:e 1 26, e 1:h 1 67, h 1:h 1 65, h 2:h 2 86, ps 1:ps 1 30, h 3:h 3 58.

Epimerites I fused into narrow V, base of epimerites II with oblique sclerotized extension flanking trochanters II. Epimerites II with small sclerotized extensions anteriorly ( Fig. 6 View FIGURE 6 B). Coxal fields II as in male. Epimerites IVa present, wide. Translobar apodemes of opisthosomal lobes absent. Epigynum horseshoe-shaped and apodemes of oviporus connected to tips of epimerites IIIa. Primary spermaduct not enlarged near head of spermatheca ( Fig. 10 View FIGURE 10 B); copulatory opening situated ventrally, posterior to anal opening. Pseudanal setae ps 2 and ps 3 setiform, seta ps 2 situated at midlevel of anal opening; distances between ventral setae: 1 a: 3a 51, 3a:g 24, g: 4a 75, 4a:ps 3 82, ps 2:ps 3 22, ps 2:ps 2 51, ps 3:ps 3 18.

Femur I without ventral crest, femur II with small crest. Solenidion σ 1 of genu I 12 in length. Genual seta cG I and II setiform, mG I and II slightly thicker basally, with filiform apex. Seta d of tarsus II–IV subequal to corresponding seta f. Solenidia ω 1 of tarsi I 17 in length, ω 3 of tarsi I 33, ω 1 of tarsi II 14. Genu IV with small dorsal inflation, genu III not modified.

Material examined. Male holotype, 6 male and 1 female paratypes (DZUnesp-RC) ex Sporophila caerulescens (Viellot) ( Passeriformes , Emberizidae ), BRAZIL: Reserva Bicudinho-do-Brejo, 25 º 45 ’28.7”S, 48 º 43 ’24.6”W, Guaratuba, Paraná, 19 January 2012, coll. F.A. Hernandes; 1 male paratype ( MNRJ), same data as the holotype.

Additional material. 4 males and 4 females (DZUnesp-RC) ex Conopophaga melanops (Vieillot) ( Conopophagidae ), BRAZIL: Santa Catarina, Blumenau, 26 ° 54 '21.89"S, 49 °04'33.60"W, 26 February, 2006, coll. A. Becker; 6 males and 19 females ex Conopophaga lineata (Wied) , BRAZIL: Distrito Federal, Fazenda Água Limpa, 15 º 57 ’S, 47 º 56 ’W, Brasília, 19 March 2002, coll. M. F. Kanegae; 2 males and 7 females, same data, 10 May 2002; 5 females, same data, 9 July 2002.

Etymology. The specific epithet reflects the morphological features in both sexes that differentiate L. distincutus from the type species of Lamellodectes . Adjective in the nominative singular.

Differential diagnosis. Lamellodectes distinctus sp. nov. can be distinguished from L. ocelatus (Berla) by having opisthosomal setae f 2 present in both sexes; in males, epimerites I are united into a Y, and in females, the translobar apodemes are absent, and setae h 1 are situated on soft tegument between anterior hysteronotal and lobar shields. In both sexes of L. ocelatus , setae f 2 are absent; in males, epimerites I are fused into a V; in females, the translobar apodemes are present, and setae h 1 are situated on the anterior margin of lobar shield.

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Astigmata

Family

Proctophyllodidae

Genus

Lamellodectes

Loc

Lamellodectes distinctus

Hernandes, Fabio A. & Valim, Michel P. 2014
2014
Loc

Proterothrix

Kanegae 2008: 33
2008