Bodotria ( Bodotria ) pseudomaculosa, Kim & Lee & Kim, 2020

Bodotria ( Bodotria) pseudomaculosa sp. nov.

( Figs 10–13 View FIGURE 10 View FIGURE 11 View FIGURE 12 View FIGURE 13 )

(Korean Name: Han-jul-gom-bo-cham-ol-chaeng-i-sae-u, new)

Type material. Holotype, adult male, 6.12 mm, cat no. NIBRIV0000837774, Jawol-myeon , Ongjin-gun, Incheonsi, Korea, 37° 00' 30.0"N, 126° 07' 30.0"E, depth 30–50 m, 23 May 2007, ( S.J. Song) collected by rectangular dredge (dissected). GoogleMaps

Diagnosis. Adult male. Carapace almost ovoid in dorsal view, surface covered with coarse squamose-reticulate patterning formed by large, shallow pits, dorso-median carina well-marked over whole length of carapace, dorsolateral carina well-developed over whole length of carapace and lower edge of mid-lateral depression forming an angular ridge, antennal notch and antero-lateral corner prominent, pseudorostral lobes wide and truncated, ocular lobe almost semicircular, with 8 lenses. Maxilliped 3 merus and carpus dilated. Pereopod 1 carpus little dilated. Pereopod 2 basis with plumose seta. Uropod peduncle with 3–5 plumose and 23–25 microserrate setae medially; endopod uniarticulate. Female unknown.

Description. Holotype, adult male, 6.12 mm, cat no. NIBRIV0000837774.

Carapace ( Figs. 10A, B View FIGURE 10 , 11A, B View FIGURE 11 ) about 1/4 of body length, almost ovoid in dorsal view, 1.4 times as long as wide, 1.8 times as long as deep; surface covered with coarse squamose-reticulate patterning formed by large, shallow pits; dorso-median carina well-marked over whole length of carapace; dorso-lateral carina well-developed over whole length of carapace and lower edge of mid-lateral depression forming an angular ridge; antennal notch and antero-lateral corner ( Fig. 11A View FIGURE 11 ) prominent; pseudorostral lobes ( Fig. 11B View FIGURE 11 ) wide and truncated, meeting in front of ocular lobe; ocular lobe ( Fig. 11B View FIGURE 11 ) almost semicircular, with 8 lenses. Pereon 0.9 times as long as carapace length; dorso-median carina and lateral carina well-marked on all free pereonites. Pleon plump, 1.2 times as long as carapace and pereon together.

Antenna 1 ( Fig. 11C View FIGURE 11 ) peduncle 3-articulate; article 1 1.7 times as long as remaining articles combined, with numerous hair-like setae distally; article 2 0.3 times article 1 length, with 1 short simple and 5 complex pedunculate setae distally; article 3 1.3 times article 2 length, with 1 short simple seta on distal margin. Main flagellum 2-articulate; article 1 with 1 short simple seta and 6 aesthetascs; article 2 with 1 complex pedunculate, 1 short simple, 2 long simple setae, and 2 aesthetascs terminally. Accessory flagellum very minute, with 1 short simple and 1 complex pedunculate setae.

Antenna 2 ( Figs. 11A, D View FIGURE 11 ) extending beyond pleotelson; peduncle 5-articulated; article 2 with 2 plumose setae; articles 4–5 with numerous simple setae, 2 complex pedunculate setae dorsodistally.

Left mandible ( Fig. 11E View FIGURE 11 ) with row of few hair-like and 11 lifting setae;incisor with 5 teeth; lacinia mobilis with 3 teeth.

Right mandible ( Fig. 11F View FIGURE 11 ) with row of 9 lifting setae; incisor with 4 teeth.

Maxilla 1 ( Fig. 11G View FIGURE 11 ) outer endite with few hair-like setae on medial margin, 1 long simple seta laterally, several hair-like and 12 stout simple setae terminally; inner endite with 3 hair-like setae on mediodistally, 2 simple, 2 stout tricuspid, 2 stout microserrate setae terminally; palp broken, with 2 setae which one of the 2 setae has some hairs and another seta broken.

Maxilla 2 ( Fig. 12A View FIGURE 12 ) broad endite with several hair-like and 17 plumose setae medially, 3 plumose, 20 simple, 9 microserrate, 1 stout pappose, and 3 stout pappo-microserrate setae terminally; outer endite with 7 simple setae terminally; inner endite with 7 microserrate setae terminally.

Maxilliped 1 ( Fig. 12B View FIGURE 12 ) basis 1.3 times as long as remaining articles combined, with 4 short simple, several hair-like, and 1 long plumose setae, medial lobe with 2 hook and 5 plumose setae medially, 3 short simple setae distally, 4 plumose and 1 short simple setae on terminal margin; ischium absent; merus 0.3 times basis length, with 2 long plumose setae on medial distal corner, 1 short simple seta laterodistally; carpus 1.7 times merus length, with 14 plumose and 6 beak setae medially, 1 short simple seta on lateral face, 1 long plumose seta laterodistally; propodus 0.4 times carpus length, with 4 plumose, 2 plumo-microserrate, and 1 long plumose setae; dactylus 0.7 times propodus length, with 3 simple and 1 microserrate setae terminally.

Maxilliped 2 ( Fig. 12C View FIGURE 12 ) basis longer than remaining articles combined, with several hair-like and 1 short simple setae medially, 1 long plumose seta on medial distal corner, 1 simple and 4 short simple setae laterally; ischium short, unarmed; merus with 1 plumose seta medially, 1 short simple seta laterally; carpus 1.2 times merus length, with few setules and 5 plumose setae medially, 1 short simple seta laterally; propodus 0.7 times carpus length, with 8 plumose setae medially, 2 long plumose setae laterally; dactylus 0.4 times propodus length, with 6 simple, 1 microserrate, and 1 stout microserrate setae.

Maxilliped 3 ( Fig. 12D View FIGURE 12 ) basis 1.9 times as long as remaining articles combined, with numerous hair-like setae on both margins, 2 plumose setae on medial distal corner, 1 short simple seta on distal face; lateral corner very inflated, reaching to the middle of merus, with 8 plumose setae; ischium 0.1 times basis length, with 2 plumose setae medially; merus 1.2 times ischium length, with 1 plumose seta medially, 1 plumose seta on lateral corner; carpus 1.1 times merus length, with 5 plumose setae medially; propodus 0.6 times carpus length, with 4 plumo-microserrate setae medially, 1 short simple seta laterodistally; dactylus 0.8 times propodus length, with few hair-like setae medially, 1 short simple seta laterally, 3 simple, 2 microserrate, and 1 long microserrate setae terminally; exopod shorter than basis.

Pereopod 1 ( Fig. 12E View FIGURE 12 ) basis 1.4 times as long as remaining articles combined, with numerous hair-like and 14 microserrate setae medially, 1 long plumose seta mediodistally, 1 short simple seta on lateral distal face, 1 plumose seta laterodistally; ischium 0.05 times basis length, unarmed; merus 3.2 times ischium length, with 1 short simple seta with subterminal setules medially; carpus 2.1 times merus length, with 1 simple and 14 short simple setae; propodus 0.3 times carpus length, with 1 short simple seta medially, 2 simple setae on medial distal corner, 1 short simple seta laterodistally; dactylus subequal to propodus length, with 2 short simple, 2 simple, 1 microserrate, and 1 long microserrate setae; exopod shorter than basis.

Pereopod 2 ( Fig. 13A View FIGURE 13 ) basis fused with ischium, 1.4 times as long as remaining articles combined, with 1 short simple seta and 1 simple seta with subterminal setules medially, 2 long plumose and 4 short simple setae on medial face, 1 complex pedunculate and 2 short simple setae on lateral face, 3 short simple and 1 complex pedunculate setae laterally; merus 0.2 times basis length, with 1 simple seta with subterminal 1 plumose seta on near medial distal margin, 3 short simple setae on lateral face; carpus 1.2 times merus length, with 1 stout microserrate seta, 1 stout microserrate seta with single subterminal setule, and 1 stout long microserrate seta with subterminal 1 complex pedunculate seta on medial distal margin, 1 short simple and 1 simple setae laterodistally; propodus 0.6 times carpus length, unarmed; dactylus 1.8 times propodus length, with 4 short simple, 1 broken setae, and 2 simple setae with single subterminal setule.

Pereopod 3 ( Fig. 13B View FIGURE 13 ) basis 1.2 times as long as remaining articles combined, with 3 complex pedunculate setae medially, 2 short simple setae laterally, 1 long plumose seta on lateral distal corner; ischium 0.1 times basis length, with 1 short simple seta on lateral face, 2 annulate setae on lateral distal corner; merus 1.7 times ischium length, with 2 short simple and 1 annulate setae; carpus subequal to merus length, with 1 simple seta, 1 simple seta with subterminal setules, and 1 long simple seta single subterminal setule on medial distal corner, 1 simple seta laterally; propodus 0.8 times carpus length, with 1 long simple seta on medial distal corner; dactylus 0.5 times propodus length, with 2 simple and 1 stout microserrate setae terminally.

Pereopod 4 ( Fig. 13C View FIGURE 13 ) basis 0.8 times as long as remaining articles combined, with 4 complex pedunculate and 7 short simple setae medially, 1 long plumose seta on proximal lateral face, 5 short simple setae laterally, 1 long plumose seta on lateral distal corner; ischium 0.2 times basis length, with 1 short simple and 2 annulate setae laterodistally; merus 1.8 times ischium length, with 1 annulate seta laterodistally; carpus 1.2 times merus length, with 1 simple, 1 plumose setae, and 1 stout long simple seta with single subterminal setule on medial distal corner, 1 broken seta laterally; propodus 0.7 times carpus length, with 1 stout long simple seta with single subterminal setule on medial distal corner; dactylus 0.5 times propodus length, with 2 simple and 1 stout simple setae terminally.

Pereopod 5 ( Fig. 13D View FIGURE 13 ) basis 0.6 times as long as remaining articles combined, with 1 plumose, 3 short simple setae, and 1 short simple seta with single subterminal setule medially, 1 plumose and 2 short simple setae laterally, 1 plumose seta on lateral distal corner; ischium 0.3 times basis length, with 1 short simple and 2 annulate setae laterodistally; merus 1.8 times ischium length, with 2 short simple and 1 annulate setae laterally; carpus 1.1 times merus length, with 1 simple, 1 plumose setae, and 1 stout long simple seta with single subterminal setule on near medial distal corner, 1 complex pedunculate and 1 short simple setae laterally; propodus 0.7 times carpus length, with 1 stout long simple seta with single subterminal setule on medial distal corner; dactylus 0.5 times propodus length, with 2 simple and 1 stout simple setae terminally.

Uropod ( Fig. 13E View FIGURE 13 ) peduncle 1.5 times pleotelson length, with 3–5 plumose and 23–25 microserrate setae medially. Uropod endopod uniarticulate, 0.6 times peduncle length, with 12 stout microserrate setae with single subterminal setule medially, 1 stout microserrate seta with single subterminal setule and 1 stout microserrate seta terminally. Uropod exopod subequal to endopod length, article 1 unarmed; article 2 with 8–9 plumose setae medially, 1 short simple, 1 simple, and 1 long simple setae terminally.

Etymology. The new species is named pseudomaculosa due to similiarity to the species Bodotria maculosa .

Remarks. The new species Bodotria ( Bodotria) pseudomaculosa sp. nov. is similar to B. ( B.) maculosa Hale, 1944 in the combination of the following features: 1) carapace almost ovoid in dorsal view, surface covered with coarse squamose-reticulate patterning formed by large, shallow pits; 2) pseudorostral lobes wide and truncated; 3) carapace dorso-lateral carina well-developed over whole length of carapace; 4) all free pereonites, dorso-median carina and lateral carina well-marked; 5) uropod endopod uniarticulate. However, the new species is obviously distinguished from B. ( B.) maculosa by the combination of the following features ( Table 1, condition of B. ( B.) maculosa in parentheses): 1) carapace, lower edge of mid-lateral depression forming an angular ridge ( vs. with a prominent longitudinal ridge and curves up posteriorly to meet the carina), 2) ocular lobe with 8 lenses ( vs. with 9 lenses); 3) third and fourth pereonites, dorso-median carina slight elevated posteriorly ( vs. dorso-median carina of third to fifth pereonites elevated posteriorly); 4) thoracic appendages, margins not serrate ( vs. more or less serrate); 5) uropod peduncle with plumose and microserrate setae medially ( vs. with only plumose seta).

Depth. 30–50 m.

Distribution. Korea (Yellow Sea).