Plate 1 issued from : J.C. von Vaupel Klein in Monoculus, 1992, 24. [p.21, Fig.1].
Female (20°29'S, 103°26'W): a, habitus (dorsal view); b, idem (left lateral aspect); c, anterior part of head with rostrum (left); d, e, urosome (dorsal, left, respectively); f, genital somite, with internal structures for sperm storage (left, dorsal, right, respectively).
Scale: i = 1.0 mm for a, b; j = 0.5 mm for c, e; k = 0.5 mm for d; l = 0.5 mm for f, g, h.
Nota Female:
- Cephalothorax ovoid and a short, compressed urosome.
- Head and 1st pedigerous segment almost completely fused (line of fusion very faint in both dorsal and lateral view, and only apparent in the middorsal region; pediger segments 4 and 5 fused.
- Posterolateral corners of the last thoracic segment rounded.
- Pediger segments 2, 3 and 4+5 equipped with 1, 4, and 5 (= 1+4) hair sensilla, respectively, on either side.
- Relative lengths of cephalothoracic somites (measured along middorsal line) 69 : 9 : 9 : 13 = 100.
- Forehead smoothly rounded, without crest.
- Frontal organ just visible in dorsal view.
- Rostrum relatively short, single-pointed, acute and hardly curved.
- Urosome 4-segmented; relative lengths (caudal rami included) 45 : 18 : 15 : 12 : 10 = 100.
- Genital segment asymmetrical in its dorsal half; on the right there is a small dorso-lateral swelling, more or less in the form of a slightly protruding ridge; left margin strongly vaulted by an anterolaterally directed outgrowth (which accommodates both left and right seminal receptacles); this outgrowth is also distinct in lateral aspect but it hardly protrudes dosrsally (apparently, the right receptacle has moved via a latero-dorsal track to the left, where it has settled in a dorso-medial position relative to the left receptacle, which is situated more ventrally). The ventral outline is rather straight, with the genital prominence hardly protruding.
- Anal somite short and compressed, bearing a broadly rounded anal operculum.
- Caudal rami dorso-ventrally fattened, more or less squarish in dorsal view; both rami bear a ventro-medially projecting brush of long hairs on their medial face, and with 6 setae: the curved , strongly feathered ventro-medial seta; the markedly reduced, almost spiniform smooth lateral seta, and 4 large, articulating caudal setae; of these, the 2nd seta from lateral is slightly longer than the other 3, which are subequal length.; all 4 large setae exhibit the presence of a distal articulation site, at c. 0.30 the length of the inner and outermost seta, while in the intermediate ones this site is situated at c. 0.40 along their length; all large setae are setulose, either completely or at least to a large extent.
Plate 2 issued from : J.C. von Vaupel Klein in Monoculus, 1992, 24. [p.23, Fig.2].
Female: a, a', left A1 (lateral view), aesthetascs on segments 5 and 8+9 drawn from right A1; b, right A2 (medial aspect); b', idem (detail of endopod 2+3; c, masticatory edge of right Md (posterior view), the dorso-medial section (dashed lines) has been drawn from paratype; c', idem (detail of multicuspidate molariform complex of left Md (posterior view); d, palp of right Md (posterior aspect).
Scale: e = 0.5 mm for a, a'; f = 0.5 mm for b, 0.25 mm for b', 0.2 mm for c, c'; g = 0.2 mm for d.
Nota Female:
- A1 24-segmented, reaching to halfway anal segment; segments 8 and 9, 25and 26 fully coalesced, with remnants of former sutures beiing only fainty indicated; segment 2 represents the usual complex of 3 previously independant segments.
- A2 endopod strongly reduced, endopod/exopod ratio c. 0.25. The two segments of basipod largely fused, this complex bears 1 large, plumose seta, a dense brush of long hairs, and 1 short, weakly developed hairbrush. At the base of endopod, 1 short seta; endopod 2-segmented, 1st segment with 1 small seta in subapical position; distal segment with 5 + 5 setae on the proximal and terminal lobes, respectively, the larger ones are sparsely plumose; the setae on the terminal lobe are much longer than those on the proximal lobe, the terminal lobe is also equipped with a subapical row of 4-6 well developed spinules. Exopod 6-segmented; segments 1 and 2 fused to form a long cylindrical structure, remnants of a suture hardly discernible; segments 3 to 6 free, each armed with 1 large plumose seta; the 7th segment of exopod is again long and cylindrical, 3 large, plumose setae insert terminally and there is a small lobular outgrowth situated medially, in front of their bases.
- Md with gnathobase heavily chitinized structure; masticatory edge composed of 5 groups of teeth: there is a multicuspidate molariform complex proximally, which includes a large, spinulose setiform tooth and a smaller, serrate setiform tooth; next, there are 3 bicuspidate molariform teeth of about equal size (at least 2 of which show a setiform projection, in their central depression); A lage, monocuspidate molariform tooth terminates the masticatory edge distally. The palp comprises the distal segments, including the annular sclerite that forms the junction with the gnathal part; basipodal segment 2 smooth, without setae or spinules; the connection of basipodal segment 2 with endopodal segment 1 is intimate, the sclerites being fused to a considerable extent; the articulation between the two segments of the endopod appears to be largely free; endopodal segment 1 may show the vestige of a seta, but this structure is not apparent in every specimen; endopodal segment 2 bears an apical row of 9 setae, 1-3 consecutively stronger, 4-7 all well developed, 8 situated on a distinct pedestal, and seta 9 slender and more weakly developed; all setae of endopodal segment 2 are plumose. Exopodite apparently articulates freely with basipodal segment 2; this originally 6-segmented ramus has largely fused to form a single complex bearing 6 strong, plumose setae, inserting along the postero-medial edges of its former segments.
Plate 3 issued from : J.C. von Vaupel Klein in Monoculus, 1992, 24. [p.25, Fig.25].
Female: a, left Mx1 (posterior face); b, right Mx1 (detail of endite of basipod 2) (anterior aspect), hairbrush not shown; c, right Mx2 (antero-ventral view); d, left Mx2 (detail of endite 5 and terminal part of appendage); e, left Mx2 (postero-medial view), detail of spinular pectines on endites 1-4.
Scale: f = 0.2 mm for a; g = 0.005 mm for b, 0.2 mm for c; h, 0.2 mm for d, e.
Nota Female:
- Mx1 with the 1st inner lobe bearing 7 heavy, bipectinate/spinulose setae along its edge, plus 2 long, spinulose ones; there is 1 small appendicular seta, submarginally on the anterior face, the posterior side is equipped with 2 setae, inserting at close range: these are the nos. 1 and 2 of the original complement of 4 setae. The 2nd inner lobe has 3 apical setae, the 2 posterior ones combined bipectinate and spinulose, the single anterior seta spinulose only; the 1st outer lobe has a marginal row of 8 plumose setae, the no. 5 from proximal being weakly developed; the 2nd outer lobe is absent (as in all Euchirella species. Basis (basipodal segment 2) bears 1 large and 2 small setae subapically, the large one finely bipectinate and coarsely spinulose, the small setae finely plumose only; the proximal edge of this segment is fringed with a sparse row of hairs; the armature of the endite is strongly reduced, though the terminal, blunt tooth with its pore-like apex normally developed; the central and the distal setae are very short and weakly developed, the latter may even be absent altogether in some specimens; the apical half of the endite is furnished with an extensive patch of long hairs. The well-delimited endopod bears 4 normally developed setae, all combined bipectinate and spinulose. Exopod partly fused to basis, bears a marginal row of 10 slender, plumose setae; the seta in the distalmost position, no. 11, through strongly reduced aooears to have been retained in most cases in an almost vestigial form, its presence , however, could not be ascertained in all specimens examined; there is a small brush of short hairs on the distal edge of this segment.
- Mx2 short and compressed, basipodal segment 1 smooth, without warts adjacent to the arched lateral margin; this segment bears the usual 4 endites, each equipped with 3 setae; basipodal segment 2 with 1 endite which bears 3 setae of unequal development, the two smaller ones correspond in structure to those of the type-species; the small and largely fused endopod bears 3 moderately large setae corresponding to its former segments 1-3, 3 slender apical setae referable to endopodal segment 4 and 2 small vestigial setae; the hook-shaped outgrowth on endite 1 appears rather blunt; the endites 1-4 bear spinular pectines on their posteromedial faces, composed of respectively, c.9 (range 8-10), c. 35 (27-43), c. 30 (28-33), and c. 38 (35-40) elements; on the endite 4, there often is a small accessory patch of c. 7 (range 6-14) spinules, inserting in a single, close bush, situated between the regular comb and the basis of the short and thick seta on that lobe; the small patch of spinules on the endite 5 appears to be absent in this species.
;)
;)
;)
;)
;)
;)
;)
;){kind=small}
