Cletocamptus assimilis, Gómez & Gee, 2009
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publication ID |
https://doi.org/ 10.1080/00222930903374171 |
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persistent identifier |
https://treatment.plazi.org/id/1373879B-FFE1-FFFD-84C7-FA3330F3FEE3 |
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treatment provided by |
Felipe |
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scientific name |
Cletocamptus assimilis |
| status |
sp. nov. |
Cletocamptus assimilis sp. nov.
( Figures 1–5 View Figure 1 View Figure 2 View Figure 3 View Figure 4 View Figure 5 )
Type material
One female holotype ( USNM 251696 View Materials ) and nine female paratypes ( USNM 1110177 View Materials ) preserved in alcohol, and six dissected female paratypes ( USNM 1123780 View Materials , USNM 1123781 View Materials , USNM 1123782 View Materials , USNM 1123783 View Materials , USNM 1123784 View Materials , USNM 1123785 View Materials ). The vial containing this material was labelled as follows: Cletocamptus deitersi USNM 251696; Argentina, Formosa, Monte Lindo, 25° 54′ S, 058′ W; Frutos, S.M. 19 Sep 1987; Reid, J.W. 27 Nov 1990; R 130 , Acc. # 392619 .
Type locality
Monte Lindo , Formosa, Argentina (25°54′S, 58°00′W) GoogleMaps .
Etymology
The specific name ( assimilis = of great similarity) makes reference to the close resemblance of the species to C. levis .
Female
Habitus ( Figure 1A–B View Figure 1 ). Tapering posteriorly; total body length measured from tip of rostrum to posterior margin of caudal rami ranging from 390 to 470 µm (mean, 409.5 µm; n = 10; holotype, 460 µm). Rostrum defined at base, triangular, with pair of setules subapically and ornamented with small spinules distally on ventral surface. Cephalic shield with fine spinules along its posterior margin dorsally and laterally. Dorsal and lateral surface of free thoracic somites (P2- to P4-bearing somites) with few short transverse rows of minute spinules laterally, with longitudinal row of tiny spinules close to and with longer spinules along posterior margin. Dorsal and lateral surface of first urosomite (P5-bearing somite) seemingly smooth, with row of tiny spinules close to and with spinules (shorter and stronger than in preceding somites) along posterior margin. Genital double-somite with subcuticular rib dorsally and laterally indicating former division between second and third urosomites ( Figure 1A, B View Figure 1 ), but completely fused ventrally ( Figure 2A View Figure 2 ); dorsal and lateral surface of second and third urosomite (first and second genital somites) with transverse rows of spinules and with row of spinules along posterior margin ( Figure 1A–B View Figure 1 ), and with ventral spinules as illustrated ( Figure 2A View Figure 2 ). Fourth and fifth urosomites as in previous somite dorsally, with ventral spinular pattern as illustrated ( Figure 2A View Figure 2 ). Dorsal surface of anal somite with transverse rows of spinules and with dorsolateral strong spinules close to joint with caudal rami; rounded anal operculum furnished with two rows of strong spinules. Caudal rami about 1.7 times as long as wide; dorsal and ventral surface smooth except for spinules close to posterior margin; with seven elements ( Figures 1A–B View Figure 1 and 2A View Figure 2 ).
Antennule ( Figure 3A View Figure 3 ). Six-segmented, surface of segments smooth except for two spinular rows on first segment. Armature formula, 1-(1), 2-(8), 3-(6), 4-(1 + [1+ae]), 5-(1), 6-(9 + [1+ae]).
Antenna ( Figure 3B View Figure 3 ). With small coxa. Allobasis armed with two abexopodal setae. Free endopodal segment with inner spinules proximally and subdistally, with two lateral inner spines and a slender seta (the latter indicated by arrows in Figure 3B View Figure 3 ), and five distal elements. Exopod one-segmented; about five times as long as wide, with few spinules, and with one lateral and two apical setae (one of them reduced – indicated by arrows in Figure 3B View Figure 3 ).
Mandible ( Figure 3C View Figure 3 ). Robust; chewing edge with bi- and multicuspidate teeth, one pyriform element and one lateral seta. Palp one-segmented, with two setae; with one small seta arising nearby.
Maxillule ( Figure 3D View Figure 3 ). Robust; arthrite of praecoxa with few spinules, with one surface seta, seven distal spines and one spinulose and strong lateral seta. Coxa with some spinules and with two slender setae. Basis with some median spinules. Homology of the setae of basis, exopod and endopod difficult to determine. Basis seemingly with three apical and two lateral setae, endopod and exopod seemingly represented by three and one seta, respectively.
Maxilla ( Figure 3E View Figure 3 ). Syncoxa with spinules along inner margin; with two endites bearing three setae each. Allobasis drawn into strong claw with one accompanying strong seta. Endopod represented by three elements.
Maxilliped ( Figure 3F View Figure 3 ). Subchelate. Syncoxa with spinular rows as illustrated and with small seta on inner distal corner. Basis unarmed; with anterior and posterior longitudinal row of spinules along inner margin; with small spinules medially and subapically. Endopod drawn into long and slender claw with one accompanying small seta.
P1 ( Figure 4A View Figure 4 ). Praecoxa with spinules close to joint with coxa. The latter with spinular rows as illustrated. Basis with inner and outer spine; with median spinular row, and with stronger spinules at base of inner and outer spine and between rami. Exopod three-segmented. Endopod two-segmented, reaching the middle of EXP3.
P2 ( Figure 4B View Figure 4 ). Praecoxa and coxa as in P1. Basis as in P1 except for lack of inner spine; outer element spine-like. Exopod three-segmented and ornamented as illustrated; EXP2 and EXP3 with inner seta. Endopod two-segmented, reaching tip of EXP1; first segment small, about as wide as long and ornamented as illustrated; second segment long, about four times as long as wide, ornamented as depicted and armed with one outer spine, one apical long seta and one inner short element.
P3 ( Figure 5A View Figure 5 ). Praecoxa and coxa as in P2. Basis as in P2 except for outer seta-like element in P3. Exopod and endopod as in P2.
P4 ( Figure 5B View Figure 5 ). Praecoxa, coxa and basis as in P3. Exopod as in P3 except for lack of inner seta in P4EXP3. Endopod two-segmented, reaching middle of EXP1; first segment very small; second segment about thee times as long as wide, armed with one inner and one apical seta.
P5 ( Figure 2B View Figure 2 ). Both legs distinct. Exopod and baseoendopod fused. Baseoendopodal lobe slightly longer than exopodal lobe, and ornamented with spinules as shown; with one outer, one apical and four inner setae; relative length of setae as shown. Exopodal lobe ornamented with spinules as illustrated, with five setae plus outer seta of basis. The armature formula of female P1–P5 is presented in Table 1.
P6 ( Figure 2A View Figure 2 ). Represented by median plate in anterior half of second urosomite (first genital somite); each vestigial leg represented by one outer long seta and one inner small element. Copulatory pore in the middle of genital double-somite.
Male
Unknown.
Variability
One female was observed to possess a very small outer spine on P4EXP3.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.