Fageapseudes Băcescu & Guţu, 1971

Drumm, David T. & Bamber, Roger N., 2013, A new species of Fageapseudes (Crustacea: Peracarida: Tanaidacea) from California, with comments on the systematics of the family Apseudidae, Zootaxa 3701 (4), pp. 437-446 : 438

Genus Fageapseudes Băcescu & Guţu, 1971

Apseudes Leach, 1814 (in part): Norman and Stebbing: 88; Stephensen, 1915: 28. Collossella Jóżwiak and Błażewicz-Paszkowycz, 2007: 8 .

Diagnosis. (Modified after Băcescu & Guţu, 1971). Body slender; pereonites 2–6 with anterolateral spine-like apophyses; pleonites with posterolateral spine-like apophyses; pleotelson longer than wide; pereonites with ventral hyposphenia; pleonites without ventral hyposphenia. Rostrum absent. Maxillipedal endite with a leaf or feathershaped inner caudodistal seta. Cheliped and pereopod 1 exopodites present or absent. Chelipeds not showing extreme sexual dimorphism. Pereopod 1 merus longer or shorter than carpus. Pereopod 4 dactylus reduced or not reduced. Pereopods 5 and 6 propodus with a ventral row of short setae. Males with 5 pairs of fully formed pleopods; female pleopods fully formed, reduced, or absent.

Type species. Apseudes retusifrons Richardson, 1912 .

Species included. Fageapseudes bicornis (Kudinova-Pasternak, 1973) ; Fageapseudes brachyomos Bamber, 2007 ; Fageapseudes pluma n. sp.; Fageapseudes retusifrons (Richardson, 1912) ; Fageapseudes suprema (JóŻwiak and BłaŻewicz-Paszkowycz, 2007) .

Remarks. Bamber (2007) transferred this genus from the Apseudinae to the Leviapseudinae based on the inner caudodistal seta of the maxillipedal endite being leaf-shaped in F. brachyomos . It is shown here that this seta in F. pluma n.sp. is feather-shaped, while it is simply setulose in F. retusifrons (see BłaŻewicz-Paszkowycz et al., 2011: Fig. 11I’) and F. suprema (JóŻwiak and BłaŻewicz-Paszkowycz, 2007: Fig. 5 K); this character is unknown in F. bicornis . BłaŻewicz-Paszkowycz et al. (2011) redescribed F. retusifrons from near the type locality. Fageapseudes pluma and F. brachyomos differ from F. retusifrons , F. bicornis , and F. suprema in several characters (i.e., slight sexual dimorphism of chelipeds; pereopod 1 carpus longer than merus; pereopod 4 dactylus reduced) that may warrant splitting this genus into two genera, but this can only be determined after a detailed morphological examination and a phylogenetic analysis. It must also be noted that F. retusifrons is the only species without exopodites on the chelipeds and pereopod 1. Fageapseudes suprema has exopodites on the chelipeds but not on the first pereopods.

Figures

FIGURE 5. Fageapseudes pluma n. sp., adult female allotype. Ventral view of the pleon, showing the ventrolateral bulbous processes.