The following LaTeX code generates a table:
\documentclass[11pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{geometry}
\usepackage{lscape}
\usepackage[document]{ragged2e}
\usepackage{float, longtable}
\usepackage[portuguese]{babel}
\usepackage{mathtools}
\usepackage{amssymb}
\usepackage{adjustbox}
\usepackage{rotating}
\usepackage{makecell}
\usepackage{changepage}
\begin{document}
\begin{landscape}%{-3.0cm}{}
\centering\footnotesize\setlength{\tabcolsep}{2pt}
\begin{longtable}{!{\vrule width 0.8pt}*{8}{c|}c!{\vrule width 0.8pt}}
\Xhline{0.8pt}
\thead{ID da \\ ORF}
& \thead{Quadro}
& \thead{Incício}
& \thead{Fim}
& \thead{Comprimento \\ (bp)}
& \thead{Função inferida}
& \thead{Nº de acesso da\\ sequência de proteína\\ usada na inferência}
& \thead{Organismo ao qual\\ pertence essa proteína}
& \thead{(e-value do BLASTp),\\(\% de identidade),\\(\% query cover),\\(\% subject cover)} \\
\Xhline{0.8pt}
\endhead
\multicolumn{9}{r@{}}{\scriptsize \itshape contig 8}
\endfoot
\Xhline{0.8pt}
\endlastfoot
\hline
ORF8
& +1
& 15232
& 16674
& 1443
& \thead{bifunctional ADP-dependent\\NAD(P)H-hydrate\\ dehydratase/NAD(P)H-hydrate\\epimerase }
& \thead{PIT77859.1}
& \thead{\textit{Limnohabitans sp.} \\ \textit{B9-3}}
& \thead{(2e-146),\\(52),\\(97),\\(98)} \\
\hline
ORF10
& +1
& 19024
& 19416
& 393
& \thead{Uncharacterised protein}
& \thead{CFN68428.1}
& \thead{\textit{Bordetella} \\ \textit{pertussis}}
& \thead{(2e-20),\\(57),\\(96),\\(55)} \\
\hline
ORF16
& +2
& 13373
& 13717
& 345
& \thead{Uncharacterised protein}
& \thead{CFO12503.1}
& \thead{\textit{Bordetella} \\ \textit{pertussis}}
& \thead{(5e-18),\\(65),\\(54),\\(86)} \\
\hline
ORF17
& +2
& 13988
& 15235
& 1248
& \thead{FAD-dependent\\oxidoreductase}
& \thead{WP\_062471622.1}
& \thead{\textit{Variovorax} \\ \textit{boronicumulans}}
& \thead{(0.0),\\(65),\\(97),\\(98)} \\
\hline
ORF26
& -1
& 19706
& 17448
& 2259
& \thead{ribonuclease R}
& \thead{WP\_108301238.1}
& \thead{\textit{Limnohabitans sp.} \\ \textit{JirII-29}}
& \thead{(0.0),\\(82),\\(98),\\(100)} \\
\hline
ORF29
& -1
& 12968
& 12075
& 894
& \thead{elongation factor Ts}
& \thead{WP\_104797623.1}
& \thead{\textit{Limnohabitans sp. } \\ \textit{TS-CS-82}}
& \thead{(0.0),\\(87),\\(94),\\(95)} \\
\hline
ORF33
& -1
& 4901
& 4395
& 507
& \thead{OmpH family\\outer membrane\\protein}
& \thead{WP\_066695178.1}
& \thead{\textit{Comamonadaceae} \\ \textit{bacterium}\\\textit{CCH4-C5}}
& \thead{(7e-94),\\(76),\\(100),\\(100)} \\
\hline
ORF34
& -1
& 3404
& 2961
& 444
& \thead{3-hydroxyacyl-\\(acyl-carrier-protein) \\dehydratase FabZ}
& \thead{WP\_056277791.1}
& \thead{\textit{Hydrogenophaga sp.} \\ \textit{Root209}}
& \thead{(8e-95),\\(86),\\(98),\\(99)} \\
\hline
ORF35
& -1
& 1001
& 363
& 639
& \thead{ribonuclease HII}
& \thead{WP\_108360097.1}
& \thead{\textit{Limnohabitans sp.} \\ \textit{Rim8}}
& \thead{(7e-128),\\(83),\\(96),\\()} \\
\hline
ORF37
& -2
& 17431
& 16679
& 753
& \thead{SDR family\\oxidoreductase}
& \thead{WP\_076201382.1}
& \thead{\textit{Rhodoferax} \\ \textit{koreense}}
& \thead{(1e-148),\\(80),\\(99),\\(99)} \\
\hline
ORF39
& -2
& 10660
& 9827
& 834
& \thead{phosphatidate\\cytidylyltransferase}
& \thead{OJW85673.1}
& \thead{\textit{Alicycliphilus sp.} \\ \textit{69-12}}
& \thead{(4e-120),\\(66),\\(99),\\(99)} \\
\hline
ORF40
& -2
& 7198
& 4901
& 2298
& \thead{outer membrane\\protein assembly\\factor BamA}
& \thead{WP\_027478712.1}
& \thead{\textit{Curvibacter} \\ \textit{gracilis}}
& \thead{(0.0),\\(71),\\(100),\\(100)} \\
\hline
ORF41
& -2
& 2950
& 2156
& 795
& \thead{acyl-ACP--\\UDP-N-acetylglucosamine\\ O-acyltransferase}
& \thead{WP\_066705960.1}
& \thead{\textit{Curvibacter} \\ \textit{delicatus}}
& \thead{(1e-171),\\(83),\\(100),\\(100)} \\
\hline
ORF42
& -3
& 20910
& 19870
& 1041
& \thead{ribosomal protein\\S12 methylthiotransferase}
& \thead{OYY19752.1}
& \thead{\textit{Burkholderiales} \\ \textit{bacterium}\\\textit{35-55-47}}
& \thead{(0.0),\\(91),\\(100),\\(75)} \\
\hline
ORF45
& -3
& 13827
& 13075
& 753
& \thead{30S ribosomal\\protein S2}
& \thead{OYU32113.1}
& \thead{\textit{Comamonadaceae} \\ \textit{bacterium}\\\textit{PBBC2}}
& \thead{(1e-175),\\(91),\\(99),\\(100)} \\
\hline
ORF46
& -3
& 11988
& 11266
& 723
& \thead{UMP kinase}
& \thead{WP\_077562881.1}
& \thead{\textit{Polaromonas sp.} \\ \textit{C04}}
& \thead{(2e-167),\\(95),\\(99),\\(100)} \\
\hline
ORF47
& -3
& 11235
& 10675
& 561
& \thead{ribosome recycling\\factor}
& \thead{WP\_019573212.1}
& \thead{MULTISPECIES: \\ \textit{Curvibacter}}
& \thead{(2e-118),\\(85),\\(100),\\(100)} \\
\hline
ORF48
& -3
& 9825
& 8635
& 1191
& \thead{1-deoxy-D-xylulose-5-phosphate\\ reductoisomerase}
& \thead{PUE32828.1}
& \thead{\textit{Limnohabitans sp.} \\ \textit{Jir61}}
& \thead{(0.0),\\(81),\\(98),\\(97)} \\
\hline
ORF49
& -3
& 8622
& 7231
& 1392
& \thead{RIP metalloprotease\\RseP}
& \thead{WP\_108360101.1}
& \thead{\textit{Limnohabitans sp. } \\ \textit{Rim8}}
& \thead{(5e-162),\\(54),\\(98),\\(99)} \\
\hline
ORF50
& -3
& 2136
& 973
& 1164
& \thead{lipid-A-disaccharide\\synthase}
& \thead{WP\_100146888.1}
& \thead{MULTISPECIES: \\ \textit{Limnohabitans}}
& \thead{(0.0),\\(74),\\(96),\\(99)} \\
\hline
ORF51
& -3
& 366
& 1
& 366
& \thead{RNA methyltransferase}
& \thead{WP\_056743611.1}
& \thead{\textit{Acidovorax sp.} \\ \textit{Root568}}
& \thead{(3e-49 ),\\(64),\\(96),\\()} \\
\end{longtable}
\caption{\textit{\Large{Contig 8}}}
\end{landscape}
\end{document}
But, as you can see, the caption "Contig 8" only appears at the final table. I thought that the code line \multicolumn{9}{r@{}}{\scriptsize \itshape contig 8} would act, esthetically, like the \caption{} function. Is there a simple way that I can make the caption "Contig 8" appear in every single table? Just like the last one?
\captionshoudl be in the table foot so at the start of thelongtablebefore\endfootunrelated but don't use\centeringwithlongtable(it does nothing)