Ivoria alourouai, Kontschán & Ermilov, 2022

Kontschan, Jeno & Ermilov, Sergey G., 2022, The second species of the genus Ivoria Kontschan, 2019: description of Ivoria alourouai sp. nov. from Ivory Coast (Acari, Mesostigmata, Urodinychidae), ZooKeys 1082, pp. 63-71 : 63

publication ID	https://dx.doi.org/10.3897/zookeys.1082.79011
publication LSID	lsid:zoobank.org:pub:FC96C395-605F-43C1-97CC-BBE166569371
persistent identifier	https://treatment.plazi.org/id/B83D5B76-2A95-47D8-A1C1-A52AB3DA7964
taxon LSID	lsid:zoobank.org:act:B83D5B76-2A95-47D8-A1C1-A52AB3DA7964
treatment provided by	ZooKeys by Pensoft
scientific name	Ivoria alourouai
status	sp. nov.

Treatment

Ivoria alourouai sp. nov.

Figures 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4

Material examined.

Holotype. Female. "Afrique Occidentale, Côte d’Ivore, Dropleu, tamisage sans tronc mort" ( Ivory Coast, Dropleu ), 7°24'31"N, 8°19'14"W, 10 Oct. 1980, V. Mahnert and J.L. Peret leg. GoogleMaps Paratypes. Four females, with same collection data as those for the holotype.

Diagnosis.

Idiosoma subpentagonal, dorsally domed, marginal and dorsal shields fused anteriorly. All dorsal setae short, with pilose margins. Five pairs of sternal setae pilose. Genital shield of female triangular, anterior margin rounded and situated between coxae IV. Peritreme hook-shaped. Tritosternum with vase-like base, apically serrate, its laciniae subdivided into two pairs of short lateral branches and one pair of long central branches. Hypostomal setae h1 robust, with a short lateral branch and with numerous lateral teeth, h2, h3, and h4 narrow and marginally serrate. Palptrochanter setae v1 robust and serrate, v2 situated on small protuberance, basally serrate and apically pilose. Internal malae long and smooth with a short lateral branch.

Description.

Female. Length of idiosoma 560-580, width at level of coxae IV 360-375 (N = 5), color reddish-brown. Shape of idiosoma pentagonal with vertex, dorsally domed.

Dorsal idiosoma (Figs 1 View Figure 1 , 4a, b View Figure 4 ). Anterior margin of vertex rounded and margins of vertex bearing marginally pilose setae, ca 32-36 long (Fig. 3a View Figure 3 ). Marginal and dorsal shields fused anteriorly, dorsal shield elevated on caudal region (Fig. 4b View Figure 4 ). Majority of dorsal shield covered by reticulate sculptured pattern. Long and robust marginally pilose setae (ca 32-36 long) situated on elevated central area of dorsal shield. 10-12 pairs of short (ca 24-26) and narrow marginally pilose setae situated lateral to elevated area. One pair of poroid situated close to posterior margin of elevated area. Marginal shield without sculptural pattern, inner margins undulate on central and caudal area. All setae on marginal shield ca 23-26 long and marginally pilose. Centro-caudal part of marginal shield separated and forming a quadrangular shield (ca 280-290 wide and ca 30-34 long). This shield bears long and robust marginally pilose setae (ca 32-36) placed on small protuberances.

Ventral idiosoma (Figs 2 View Figure 2 , 4c, d View Figure 4 ). Five pairs of sternal setae pilose, st1 and st4 shorter (ca 7-8), st2, st3 and st5 longer (ca 10-12). Setae st1 inserted at level of anterior margin of coxae II, st2 at level of central region of coxae II, st3 at level of posterior margin of coxae III, st4 at level of central area of coxae III, st5 close to basal margin of genital shield. Sternal shield without sculptured pattern, one pair of poroid situated close to st3. 7-8 pairs of short (ca 21-25), marginally pilose ventral setae situated posterior to genital shield, surface around these setae covered by oval pits. 20-21 pairs of long (ca 34-36), marginally pilose setae placed on small protuberance situated on L-shaped longitudinal row from peritremes to anal opening. Ventral surface bears reticulate sculptural pattern posterior to pedofossae IV. Anal opening oval ca 10-12 long and ca 4-6 wide, anal valves narrow and with smooth surface (Fig. 3b View Figure 3 ). Genital shield triangular, length 100-105, width at basal level 105-115, situated between coxae IV and pedofossae IV; surface without sculptural pattern. Peritremes hook-shaped (Fig. 3c View Figure 3 ). Pedofossae deep, their surface smooth, separate furrow for tarsi IV absent. Tritosternum (Fig. 3d View Figure 3 ) with vase-like base, apically with one pair of spines, its laciniae subdivided into two pairs of short lateral branches and one pair of long central branches.

Gnathosoma (Fig. 3d-f View Figure 3 ). Corniculi small, smooth and horn-like, situated posterior to h2; internal malae smooth with a short lateral branch, two times longer than corniculi. Hypostomal setae h1 long (ca 90-95), robust and with a short lateral branch and with numerous lateral teeth. Setae h2 (ca 35-37), h3 and h4 (ca 20-24) marginally serrate. Deutosternal region without teeth or denticulate rows. Chelicerae large and robust with internal sclerotized nodes (Fig. 3f View Figure 3 ). Fixed digit of chelicerae longer (ca 146-150) than movable digit (ca 119-120); both digits of chelicerae bearing a large central tooth. Palp trochanter setae v1 robust and serrate (ca 49-52), v2 long (ca 90-92), basally serrate and apically pilose and situated on a small protuberance. Other setae on palp segments smooth (Fig. 3d, e View Figure 3 ). Palp apotele bifurcated. Epistome marginally serrate.

Legs (Fig. 3g-j View Figure 3 ). Length of legs (from base of coxae to apex of tarsus): I 340-350, II 380-385, III 330-340, IV 345-355. Leg I without ambulacral claws, majority of setae on all legs pilose, some setae on tarsi and the ventral area smooth.

Etymology.

The name of the new species is dedicated to Alouroua the mythical creator of the Akan (Baoule) people who are the major cultural group of the Ivory Coast.

Remarks.

Until now, only one species had been described from this poorly-known genus. The differences between of the two species are summarized in Table 1 View Table 1 .